HEF4093B Datasheet by NXP USA Inc.

View All Related Products | Download PDF Datasheet
nexpefla
1. General description
The HEF4093B is a quad two-input NAND gate. Each input has a Schmitt trigger circuit.
The gate switches at different points for positive-going and negative-going signals. The
difference between the positive voltage (VT+) and the negative voltage (VT) is defined as
hysteresis voltage (VH).
It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS
(usually ground). Unused inputs must be connected to VDD, VSS, or another input.
2. Features and benefits
Schmitt trigger input discrimination
Fully static operation
5 V, 10 V, and 15 V parametric ratings
Standardized symmetrical output characteristics
Specified from40 C to +85 C and 40 C to +125 C
Complies with JEDEC standard JESD 13-B
3. Applications
Wave and pulse shapers
Astable multivibrators
Monostable multivibrators
4. Ordering information
HEF4093B
Quad 2-input NAND Schmitt trigger
Rev. 9 — 15 December 2015 Product data sheet
Table 1. Ordering information
All types operate from
40
C to +125
C
Type number Package
Name Description Version
HEF4093BT SO14 plastic small outline package; 14 leads; body width 3.9 mm SOT108-1
§ «E -- >- >- 0911539195 flflflflflflfl UUUUUUU mysagma amp.“ av mu m WM; vrs-Mfl
© Nexperia B.V. 2017. All rights reserved
HEF4093B All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 9 — 15 December 2015 2 of 14
Nexperia HEF4093B
Quad 2-input NAND Schmitt trigger
5. Functional diagram
6. Pinning information
6.1 Pinning
Fig 1. Functional diagram Fig 2. Logic diagram (one gate)
DDJ
$
%
$
%
$
%

$

%


<
<
<
<
DDJ
Q$
Q%
Q<
Fig 3. Pin configuration
+()%
$ 9''
% %
< $
< <
$ <
% %
966 $
DDJ





la, mum av 1m7 "mum“...
© Nexperia B.V. 2017. All rights reserved
HEF4093B All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 9 — 15 December 2015 3 of 14
Nexperia HEF4093B
Quad 2-input NAND Schmitt trigger
6.2 Pin description
7. Functional description
[1] H = HIGH voltage level; L = LOW voltage level.
8. Limiting values
[1] For SO14 packages: above Tamb = 70 C, Ptot derates linearly with 8 mW/K.
Table 2. Pin description
Symbol Pin Description
1A to 4A 1, 5, 8, 12 input
1B to 4B 2, 6, 9, 13 input
1Y to 4Y 3, 4, 10, 11 output
VDD 14 supply voltage
VSS 7 ground (0 V)
Table 3. Function table[1]
Input Output
nA nB nY
LLH
LHH
HL H
HHL
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to VSS = 0 V (ground).
Symbol Parameter Conditions Min Max Unit
VDD supply voltage 0.5 +18 V
IIK input clamping current VI<0.5 V or VI>V
DD + 0.5 V - 10 mA
VIinput voltage 0.5 VDD + 0.5 V
IOK output clamping current VO<0.5 V or VO>V
DD + 0.5 V - 10 mA
II/O input/output current - 10 mA
IDD supply current - 50 mA
Tstg storage temperature 65 +150 C
Tamb ambient temperature 40 +125 C
Ptot total power dissipation Tamb = 40 C to +125 C
SO14 [1] -500mW
P power dissipation per output - 100 mW
nmm av 1m7 Aluminum:
© Nexperia B.V. 2017. All rights reserved
HEF4093B All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 9 — 15 December 2015 4 of 14
Nexperia HEF4093B
Quad 2-input NAND Schmitt trigger
9. Recommended operating conditions
10. Static characteristics
Table 5. Recommended operating conditions
Symbol Parameter Conditions Min Max Unit
VDD supply voltage 3 15 V
VIinput voltage 0 VDD V
Tamb ambient temperature in free air 40 +125 C
Table 6. Static characteristics
VSS = 0 V; VI=V
SS or VDD; unless otherwise specified.
Symbol Parameter Conditions VDD Tamb = 40 C Tamb = +25 C Tamb = +85 C Tamb = +125 CUnit
Min Max Min Max Min Max Min Max
VOH HIGH-level
output voltage
IO < 1 A 5 V 4.95 - 4.95 - 4.95 - 4.95 - V
10 V 9.95 - 9.95 - 9.95 - 9.95 - V
15 V 14.95 - 14.95 - 14.95 - 14.95 - V
VOL LOW-level
output voltage
IO < 1 A 5 V - 0.05 - 0.05 - 0.05 - 0.05 V
10 V - 0.05 - 0.05 - 0.05 - 0.05 V
15 V - 0.05 - 0.05 - 0.05 - 0.05 V
IOH HIGH-level
output current VO = 2.5 V 5 V - 1.7 - 1.4 - 1.1 - 1.1 mA
VO = 4.6 V 5 V - 0.64 - 0.5 - 0.36 - 0.36 mA
VO = 9.5 V 10 V - 1.6 - 1.3 - 0.9 - 0.9 mA
VO = 13.5 V 15 V - 4.2 - 3.4 - 2.4 - 2.4 mA
IOL LOW-level
output current VO = 0.4 V 5 V 0.64 - 0.5 - 0.36 - 0.36 - mA
VO = 0.5 V 10 V 1.6 - 1.3 - 0.9 - 0.9 - mA
VO = 1.5 V 15 V 4.2 - 3.4 - 2.4 - 2.4 - mA
IIinput leakage
current 15 V - 0.1 - 0.1 - 1.0 - 1.0 A
IDD supply current all valid input
combinations;
IO=0A
5 V - 0.25 - 0.25 - 7.5 - 7.5 A
10 V - 0.5 - 0.5 - 15.0 - 15.0 A
15 V - 1.0 - 1.0 - 30.0 - 30.0 A
CIinput
capacitance ---7.5-- - -pF
see Figure 4 Figure 5 mum av 1m7 "mum“...
© Nexperia B.V. 2017. All rights reserved
HEF4093B All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 9 — 15 December 2015 5 of 14
Nexperia HEF4093B
Quad 2-input NAND Schmitt trigger
11. Dynamic characteristics
[1] Typical value of the propagation delay and output transition time can be calculated with the extrapolation formula (CL in pF).
Table 7. Dynamic characteristics
Tamb = 25
C; CL = 50 pF; tr = tf
20 ns; wave forms see Figure 4; test circuit see Figure 5; unless otherwise specified.
Symbol Parameter Conditions VDD Extrapolation formula[1] Min Typ Max Unit
tPHL HIGH to LOW
propagation delay nA or nB to nY 5 V 63 ns + (0.55 ns/pF)CL- 90 185 ns
10 V 29 ns + (0.23 ns/pF)CL-4080ns
15 V 22 ns + (0.16 ns/pF)CL-3060ns
tPLH LOW to HIGH
propagation delay nA or nB to nY 5 V 58 ns + (0.55 ns/pF)CL- 85 170 ns
10 V 29 ns + (0.23 ns/pF)CL-4080ns
15 V 22 ns + (0.16 ns/pF)CL-3060ns
tTHL HIGH to LOW output
transition time nY to LOW 5 V 10 ns + (1.00 ns/pF)CL- 60 120 ns
10 V 9 ns + (0.42 ns/pF)CL-3060ns
15 V 6 ns + (0.28 ns/pF)CL-2040ns
tTLH LOW to HIGH output
transition time nA or nB to
HIGH 5 V 10 ns + (1.00 ns/pF)CL- 60 120 ns
10 V 9 ns + (0.42 ns/pF)CL-3060ns
15 V 6 ns + (0.28 ns/pF)CL-2040ns
Table 8. Dynamic power dissipation
VSS = 0 V; tr = tf
20 ns; Tamb = 25
C.
Symbol Parameter VDD Typical formula where:
PDdynamic power
dissipation 5V P
D = 1300 fi + (fo CL) VDD2 (W) fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
(fo CL) = sum of the outputs;
VDD = supply voltage in V.
10 V PD = 6400 fi + (fo CL) VDD2 (W)
15 V PD = 18700 fi + (fo CL) VDD2 (W)
oomgm J. I flmssgtaz «1 Wm; a v 1m7 NI mm mm
© Nexperia B.V. 2017. All rights reserved
HEF4093B All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 9 — 15 December 2015 6 of 14
Nexperia HEF4093B
Quad 2-input NAND Schmitt trigger
12. Waveforms
Measurement points are given in Table 9.
Logic levels: VOL and VOH are typical output voltage levels that occur with the output load.
tr, tf = input rise and fall times.
Fig 4. Propagation delay and output transition time
DDJ
LQSXW
RXWSXW
W3/+
W3+/
9
9,
90
90
92+
92/
W7/+
W7+/




WUWI
Table 9. Measurement points
Supply voltage Input Output
VDD VMVM
5 V to 15 V 0.5VDD 0.5VDD
Test data given in Table 10.
Definitions for test circuit:
DUT = Device Under Test.
CL= load capacitance including jig and probe capacitance.
RT= termination resistance should be equal to the output impedance Zo of the pulse generator.
Fig 5. Test circuit for measuring switching times
9
''
9
,
9
2
DDJ
'87
&/
57
*
Table 10. Test data
Supply voltage Input Load
VDD VItr, tfCL
5 V to 15 V VSS or VDD 20 ns 50 pF
Figure 6 Figure 7 mmuwm W1ang105 um Wm; a v 1m7 NI mm mm
© Nexperia B.V. 2017. All rights reserved
HEF4093B All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 9 — 15 December 2015 7 of 14
Nexperia HEF4093B
Quad 2-input NAND Schmitt trigger
13. Transfer characteristics
Table 11. Transfer characteristics
VSS =0V; T
amb = 25
C; see Figure 6 and Figure 7.
Symbol Parameter Conditions VDD Min Typ Max Unit
VT+ positive-going threshold voltage 5 V 1.9 2.9 3.5 V
10 V 3.6 5.2 7 V
15 V 4.7 7.3 11 V
VTnegative-going threshold voltage 5 V 1.5 2.2 3.1 V
10 V 3 4.2 6.4 V
15 V 4 6.0 10.3 V
VHhysteresis voltage 5 V 0.4 0.7 - V
10 V 0.6 1.0 - V
15 V 0.7 1.3 - V
Fig 6. Transfer characteristic Fig 7. Waveforms showing definition of VT+ and VT
(between limits at 30 % and 70 %) and VH
DDJ
9
2
9
,
9
+
9
7
9
7
DDJ
92
9,9+
97
97
uNprIHiEV 2m: Afluuhlsveslmfl
© Nexperia B.V. 2017. All rights reserved
HEF4093B All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 9 — 15 December 2015 8 of 14
Nexperia HEF4093B
Quad 2-input NAND Schmitt trigger
a. VDD = 5 V; Tamb = 25 Cb.V
DD = 10 V; Tamb = 25 C
c. VDD = 15 V; Tamb = 25 C
Fig 8. Typical drain current as a function of input
9,9

DDJ


,''
$
9,9

DDJ


,''
$
9,9

DDJ


,''
$
\\ \\ \\ n7 901359113 ‘14 n7 anyuagm “my.“ av mu an MS 15mg
© Nexperia B.V. 2017. All rights reserved
HEF4093B All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 9 — 15 December 2015 9 of 14
Nexperia HEF4093B
Quad 2-input NAND Schmitt trigger
14. Application information
Some examples of applications for the HEF4093B are:
Wave and pulse shapers
Astable multivibrators
Monostable multivibrators
If a Schmitt trigger is driven via a high-impedance (R > 1 k), then it is necessary to
incorporate a capacitor C with a value of ; otherwise oscillation can occur
on the edges of a pulse.
Cp is the external parasitic capacitance between inputs and output; the value depends on
the circuit board layout.
Remark: The two inputs may be connected together, but this will result in a larger
through-current at the moment of switching.
Tamb = 25 C.
Fig 9. Typical switching levels as a function of supply voltage
Fig 10. Astable multivibrator Fig 11. Schmitt trigger driven via a
high-impedance input
DDJ
9''
9''

&S
5
&
DDJ
9''
9''

C
CP
------ VDD VSS
VH
------------------------->
© Nexperia B.V. 2017. All rights reserved
HEF4093B All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 9 — 15 December 2015 10 of 14
Nexperia HEF4093B
Quad 2-input NAND Schmitt trigger
15. Package outline
Fig 12. Package outline SOT108-1 (SO14)
81,7$
PD[ $
 $
 $
 E
S F '
 (
 
H +
( / /
S 4 =\ZY ș
5()(5(1&(6
287/,1(
9(56,21
(8523($1
352-(&7,21 ,668('$7(
,(& -('(& -(,7$
PP
LQFKHV
 


  






  




 

R
R
 
',0(16,216LQFKGLPHQVLRQVDUHGHULYHGIURPWKHRULJLQDOPPGLPHQVLRQV
1RWH
3ODVWLFRUPHWDOSURWUXVLRQVRIPPLQFKPD[LPXPSHUVLGHDUHQRWLQFOXGHG


627
;
Z 0
ș
$
$

$

E
S
'
+
(
/
S
4
GHWDLO;
(
=
H
F
/
Y 0 $
$

$




\
( 06
SLQLQGH[
 


  






 










 




  PP
VFDOH
62SODVWLFVPDOORXWOLQHSDFNDJHOHDGVERG\ZLGWKPP 627
mum av 1m7 "mum“...
© Nexperia B.V. 2017. All rights reserved
HEF4093B All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 9 — 15 December 2015 11 of 14
Nexperia HEF4093B
Quad 2-input NAND Schmitt trigger
16. Abbreviations
17. Revision history
Table 12. Abbreviations
Acronym Description
DUT Device Under Test
Table 13. Revision history
Document ID Release date Data sheet status Change notice Supersedes
HEF4093B v.9 20151215 Product data sheet - HEF4093B v.8
Modifications: Type number HEF4093BP (SOT27-1) removed.
HEF4093B v.8 20111121 Product data sheet - HEF4093B v.7
Modifications: Table 6: IOH minimum values changed to maximum
HEF4093B v.7 20100901 Product data sheet - HEF4093B v.6
HEF4093B v.6 20091202 Product data sheet - HEF4093B v.5
HEF4093B v.5 20090728 Product data sheet - HEF4093B v.4
HEF4093B v.4 20080612 Product data sheet - HEF4093B_CNV v.3
HEF4093B_CNV v.3 19950101 Product specification - HEF4093B_CNV v.2
HEF4093B_CNV v.2 19950101 Product specification - -
mum av 1m7 "mum“...
© Nexperia B.V. 2017. All rights reserved
HEF4093B All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 9 — 15 December 2015 12 of 14
Nexperia HEF4093B
Quad 2-input NAND Schmitt trigger
18. Legal information
18.1 Data sheet status
[1] Please consult the most recently issued document before initiating or completing a design.
[2] The term ‘short data sheet’ is explained in section “Definitions”.
[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nexperia.com.
18.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Nexperia does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local Nexperia sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
Nexperia and its customer, unless Nexperia and
customer have explicitly agreed otherwise in writing. In no event however,
shall an agreement be valid in which the Nexperia product is
deemed to offer functions and qualities beyond those described in the
Product data sheet.
18.3 Disclaimers
Limited warranty and liability — Information in this document is believed to
be accurate and reliable. However, Nexperia does not give any
representations or warranties, expressed or implied, as to the accuracy or
completeness of such information and shall have no liability for the
consequences of use of such information. Nexperia takes no
responsibility for the content in this document if provided by an information
source outside of Nexperia.
In no event shall Nexperia be liable for any indirect, incidental,
punitive, special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal or
replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason
whatsoever, Nexperia’s aggregate and cumulative liability towards
customer for the products described herein shall be limited in accordance
with the Terms and conditions of commercial sale of Nexperia.
Right to make changes — Nexperia reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Suitability for use — Nexperia products are not designed,
authorized or warranted to be suitable for use in life support, life-critical or
safety-critical systems or equipment, nor in applications where failure or
malfunction of a Nexperia product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. Nexperia and its suppliers accept no liability for
inclusion and/or use of Nexperia products in such equipment or
applications and therefore such inclusion and/or use is at the customer’s own
risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and operation of their applications
and products using Nexperia products, and Nexperia
accepts no liability for any assistance with applications or customer product
design. It is customer’s sole responsibility to determine whether the Nexperia
product is suitable and fit for the customer’s applications and
products planned, as well as for the planned application and use of
customer’s third party customer(s). Customers should provide appropriate
design and operating safeguards to minimize the risks associated with their
applications and products.
Nexperia does not accept any liability related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
third party customer(s). Customer is responsible for doing all necessary
testing for the customer’s applications and products using Nexperia
products in order to avoid a default of the applications and
the products or of the application or use by customer’s third party
customer(s). Nexperia does not accept any liability in this respect.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those given in
the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
Terms and conditions of commercial sale — Nexperia
products are sold subject to the general terms and conditions of commercial
sale, as published at http://www.nexperia.com/profile/terms, unless otherwise
agreed in a valid written individual agreement. In case an individual
agreement is concluded only the terms and conditions of the respective
agreement shall apply. Nexperia hereby expressly objects to
applying the customer’s general terms and conditions with regard to the
purchase of Nexperia products by customer.
No offer to sell or license — Nothing in this document may be interpreted or
construed as an offer to sell products that is open for acceptance or the grant,
conveyance or implication of any license under any copyrights, patents or
other industrial or intellectual property rights.
Document status[1][2] Product status[3] Definition
Objective [short] data sheet Development This document contains data from the objective specification for product development.
Preliminary [short] data sheet Qualification This document contains data from the preliminary specification.
Product [short] data sheet Production This document contains the product specification.
http://wwwmexgeria salesaddresses®nexperia am"... av 1m7 umsmmu
© Nexperia B.V. 2017. All rights reserved
HEF4093B All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 9 — 15 December 2015 13 of 14
Nexperia HEF4093B
Quad 2-input NAND Schmitt trigger
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
Non-automotive qualified products — Unless this data sheet expressly
states that this specific Nexperia product is automotive qualified,
the product is not suitable for automotive use. It is neither qualified nor tested
in accordance with automotive testing or application requirements. Nexperia
accepts no liability for inclusion and/or use of
non-automotive qualified products in automotive equipment or applications.
In the event that customer uses the product for design-in and use in
automotive applications to automotive specifications and standards, customer
(a) shall use the product without Nexperia’s warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
Nexperia’s specifications such use shall be solely at customer’s
own risk, and (c) customer fully indemnifies Nexperia for any
liability, damages or failed product claims resulting from customer design and
use of the product for automotive applications beyond Nexperia’s
standard warranty and Nexperia’s product specifications.
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
18.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
19. Contact information
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Nexperia HEF4093B
Quad 2-input NAND Schmitt trigger
20. Contents
1 General description. . . . . . . . . . . . . . . . . . . . . . 1
2 Features and benefits . . . . . . . . . . . . . . . . . . . . 1
3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
4 Ordering information. . . . . . . . . . . . . . . . . . . . . 1
5 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
6 Pinning information. . . . . . . . . . . . . . . . . . . . . . 2
6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3
7 Functional description . . . . . . . . . . . . . . . . . . . 3
8 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 3
9 Recommended operating conditions. . . . . . . . 4
10 Static characteristics. . . . . . . . . . . . . . . . . . . . . 4
11 Dynamic characteristics . . . . . . . . . . . . . . . . . . 5
12 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
13 Transfer characteristics . . . . . . . . . . . . . . . . . . 7
14 Application information. . . . . . . . . . . . . . . . . . . 9
15 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 10
16 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 11
17 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 11
18 Legal information. . . . . . . . . . . . . . . . . . . . . . . 12
18.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 12
18.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
18.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
18.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 13
19 Contact information. . . . . . . . . . . . . . . . . . . . . 13
20 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
© Nexperia B.V. 2017. All rights reserved
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Date of release:
15 December 2015

Products related to this Datasheet

IC GATE NAND SCHMITT 4CH 14SO
IC GATE NAND SCHMITT 4CH 14SO
IC GATE NAND SCHMITT 4CH 14SO
IC GATE NAND SCHMITT 4CH 14DIP
IC GATE NAND SCHMITT 4CH 14SO
IC GATE NAND SCHMITT 4CH 14SO
IC GATE NAND SCHMITT 4CH 14SO
IC GATE NAND SCHMITT 4CH 14SO