74HC21
CC













Table 1.
Ordering information
Type number Package
74HC21D
74HC21DB
74HC21PW
Temperature range

40

C to +125

C


40
40


C to +125
C to +125


C
C
Name
SO14
Description plastic small outline package; 14 leads; body width 3.9 mm
SSOP14 plastic shrink small outline package; 14 leads; body width 5.3 mm
TSSOP14 plastic thin shrink small outline package; 14 leads; body width 4.4 mm
Version
SOT108-1
SOT337-1
SOT402-1

NXP Semiconductors
74HC21
Dual 4-input AND gate
$
%
&
'
$
%
&
'
<
<
Fig 1.
Functional diagram
DDE
$
%
&
'
$
%
&
'
Fig 2.
Logic symbol
<
<
DDE
Fig 3.
IEC Logic symbol
DDE
$
%
&
'
Fig 4.
Logic diagram
DDE
<
5.1 Pinning
+&
&
'
<
$
%
QF
*1'
DDE
Fig 5.
Pin configuration SOT108-1
QF
%
$
9
&&
'
&
<
74HC21
Product data sheet
+&
$
%
QF
&
'
<
*1'
%
$
<
9
&&
'
&
QF
DDL
Fig 6.
Pin configuration SOT337-1 and SOT402-1
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 30 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
2 of 14

NXP Semiconductors
5.2 Pin description
Table 2.
Pin description
Symbol
1A, 1B, 1C, 1D n.c.
1Y
GND
2Y
2A, 2B, 2C, 2D
V
CC
Pin
1, 2, 4, 5
3, 11
6
7
8
9, 10, 12, 13
14
Table 3.
Function table
[1]
Input
X
H
X
X nA
L nB
X
L
X
X
H nC
X
X
L
X
H
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care.
L
H
X
X nD
X
Description data input not connected data output ground (0 V) data output data input supply voltage
74HC21
Dual 4-input AND gate
L
H
L
L
Output nY
L
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
V
CC
I
IK
I
OK
I
O
I
CC
I
GND
T stg
P tot
Parameter supply voltage input clamping current output clamping current output current supply current ground current storage temperature total power dissipation
Conditions
V
I
<
V
O

0.5 V or V
I
> V
<

0.5 V or V
O

0.5 V < V
O
< V
CC
CC
+ 0.5 V
> V
CC
+ 0.5 V
+ 0.5 V
SO14 and (T)SSOP14 packages
[1]
[1]
[2]
Min

0.5
-
-
-
-

50

65
-
Max
+7 V

20 mA

20 mA

25 mA
50 mA
-
+150
500
Unit mA

C mW
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For SO14 package: P tot
derates linearly with 8 mW/K above 70

C.
For (T)SSOP14 packages: P tot
derates linearly with 5.5 mW/K above 60

C.
74HC21
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 30 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
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NXP Semiconductors
Table 5.
Recommended operating conditions
Voltages are referenced to GND (ground = 0 V)
Symbol Parameter supply voltage
Conditions
V
CC
V
I
V
O
 t/

V
T amb input voltage output voltage input transition rise and fall rate ambient temperature
V
V
CC
CC
= 2.0 V
= 4.5 V
V
CC
= 6.0 V
74HC21
Dual 4-input AND gate
-
-
-

40
Min
2.0
0
0
Typ
5.0
-
-
-
1.67
-
-
Max
6.0
V
CC
V
CC
625
139
Unit
V
V
V ns/V ns/V
83 ns/V
+125

C
Table 6.
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25

C

40

C to +85

C

40

C to +125

C Unit
I
I
V
V
V
V
I
IH
IL
OH
OL
CC
C
I
Min Typ Max
HIGH-level input voltage
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
CC
= 2.0 V
1.5
3.15
4.2
1.2
2.4
3.2
-
-
-
LOW-level input voltage
HIGH-level output voltage
LOW-level output voltage input leakage current
V
I
= V
CC
or GND;
V
CC
= 6.0 V supply current V
I
= V
CC
or GND; I
O
V
CC
= 6.0 V
= 0 A; input capacitance
I
O
= 4.0 mA; V
CC
= 4.5 V
I
O
= 5.2 mA; V
CC
= 6.0 V
-
-
-
-
-
0.8
V
CC
= 4.5 V
V
CC
= 6.0 V -
-
-
2.1
2.8
V
I
= V
IH
or V
IL
I
O
=

20

A; V
CC
= 2.0 V
I
O
=

20

A; V
CC
= 4.5 V
1.9
4.4
2.0
4.5
I
O
=

20

A; V
CC
= 6.0 V 5.9
6.0
I
O
=

4.0 mA; V
CC
= 4.5 V 3.98
4.32
I
O
=

5.2 mA; V
CC
= 6.0 V 5.48
5.81
V
I
= V
IH
or V
IL
I
O
= 20

A; V
CC
= 2.0 V
I
O
= 20

A; V
CC
= 4.5 V
I
O
= 20

A; V
CC
= 6.0 V -
-
0
0
0
1.35
1.8
-
-
-
-
-
0.1
0.1
0.1
0.15
0.26
0.16
-
-
3.5
0.5
0.26

0.1
2.0
-
Min
1.5
3.15
4.2
1.9
4.4
5.9
3.84
5.34
-
-
-
-
-
-
-
-
-
-
-
Max
-
-
-
0.5
1.35
1.8
-
-
-
-
-
0.1
0.1
0.1
0.33
0.33

20
-
1
Min
1.5
3.15
4.2
-
-
-
-
-
1.9
4.4
5.9
3.7
5.2
-
-
-
-
-
-
Max
-
-
-
0.5
1.35
1.8
-
-
-
-
-
0.1
0.1
0.1
0.4
0.4

-
1
40
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V


A
A pF
74HC21
Product data sheet
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Rev. 7 — 30 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
4 of 14

NXP Semiconductors
74HC21
Dual 4-input AND gate
Table 7.
Dynamic characteristics
GND = 0 V; test circuit see
Figure 8
.
Symbol Parameter Conditions 25

C
Min Typ Max

40

C to +85

C

40

C to +125

C Unit
Min Max Min Max t t t pd
C
PD propagation delay nA, nB, nC or nD to nY; see
Figure 7
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
CC
= 5.0 V; C
L
= 15 pF transition time nY output; see
Figure 7
power dissipation capacitance
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
I
= GND to V
CC
[1]
[2]
[3]
-
-
-
-
-
-
-
-
[1] t pd
is the same as t
PHL
and t
PLH
.
[2] t t
is the same as t
THL
and t
TLH
.
[3] C
PD is used to determine the dynamic power dissipation (P
D
in

W):
P
D
= C
PD

V
CC
2  f i

N +

(C
L

V
CC
2  f o
) where: f i
= input frequency in MHz; f o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in V;
N = number of inputs switching;

(C
L

V
CC
2  f o
) = sum of outputs.
33 110
12 22
10 19
10 -
19 75
7 15
6
15
13
-
-
-
-
-
-
-
-
140
28
24
-
95
19
16
-
-
-
-
-
-
-
-
165
33
28
ns ns ns ns
110 ns
22
19
ns ns pF
74HC21
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 30 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
5 of 14

NXP Semiconductors
74HC21
Dual 4-input AND gate
9
,
Q$Q%Q&
Q'LQSXW
*1'
9
0
9
2+
Q<RXWSXW
9
2/
W
3+/
9
0
9
<
9
;
W
7+/
W
3/+
W
7/+
DDE
Measurement points are given in Table 8 .
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
Fig 7.
Waveforms showing the input (nA, nB, nC, nD) to output (nY) propagation delays and the output transition times
Table 8.
Measurement points
Type Input
74HC21
V
M
0.5V
CC
Output
V
M
0.5V
CC
V
X
0.1V
CC
V
Y
0.9V
CC
74HC21
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 30 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
6 of 14

NXP Semiconductors
74HC21
Dual 4-input AND gate
9
,
QHJDWLYH
SXOVH
*1'
9
0
W
:
9
0
W
I
W
U
W
U
W
I
9
,
SRVLWLYH
SXOVH
*1'
*
9,
9
0
57
W
:
9
&&
'87
92
9
0
&/
DDK
Test data is given in
Table 9
.
Definitions test circuit:
R
T
= termination resistance should be equal to output impedance Z o
of the pulse generator.
C
L
= load capacitance including jig and probe capacitance.
Fig 8.
Test circuit for measuring switching times
Table 9.
Test data
Type
74HC21
Input
V
I
V
CC t r
, t f
6.0 ns
Load
C
L
15 pF, 50 pF
Test t
PLH
, t
PHL
74HC21
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 30 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
7 of 14

NXP Semiconductors
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06
Y Z
(8523($1
352-(&7,21
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R
Fig 9.
Package outline SOT108-1 (SO14)
74HC21
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 30 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
8 of 14

NXP Semiconductors
6623SODVWLFVKULQNVPDOORXWOLQHSDFNDJHOHDGVERG\ZLGWKPP
74HC21
Dual 4-input AND gate
627
'
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(
+
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$
;
Y
0 $
=
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SLQLQGH[
$
$
/
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GHWDLO;
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$
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H
E
S
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PP
VFDOH
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81,7
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S
F
PP
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287/,1(
9(56,21
627
,(&
5()(5(1&(6
-('(& -(,7$
02
Y Z
(8523($1
352-(&7,21
\ = ș
R
R
,668('$7(
Fig 10. Package outline SOT337-1 (SSOP14)
74HC21
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 30 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
9 of 14

NXP Semiconductors
76623SODVWLFWKLQVKULQNVPDOORXWOLQHSDFNDJHOHDGVERG\ZLGWKPP
74HC21
Dual 4-input AND gate
627
'
F
(
+
(
$
;
Y 0 $
\
=
SLQLQGH[
H
E
S
Z 0
$
$
/
/
S
GHWDLO;
4
$
$ ș
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81,7
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$ $ $ E
S
F
PP
' ( H
1RWHV
3ODVWLFRUPHWDOSURWUXVLRQVRIPPPD[LPXPSHUVLGHDUHQRWLQFOXGHG
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287/,1(
9(56,21
,(&
5()(5(1&(6
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627 02
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S
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(8523($1
352-(&7,21
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R
,668('$7(
Fig 11. Package outline SOT402-1 (TSSOP14)
74HC21
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 30 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
10 of 14

NXP Semiconductors
74HC21
Dual 4-input AND gate
Table 10.
Abbreviations
Acronym
CMOS
Description
Complementary Metal Oxide Semiconductor
DUT
ESD
HBM
MM
TTL
Device Under Test
ElectroStatic Discharge
Human Body Model
Machine Model
Transistor-Transistor Logic
Table 11.
Revision history
Document ID
74HC21 v.7
Modifications:
74HC21 v.6
Release date Data sheet status Change notice
20151130 Product data sheet -
•
Type numbers 74HC21N (SOT27-1) removed.
20130208 Product data sheet -
Supersedes
74HC21 v.6
74HC21 v.5
Modifications:
74HC21 v.5
Section 2 : Typo corrected in the specified temperature range.
20090507 Product data sheet 74HC21 v.4
Modifications:
74HC21 v.4
Modifications:
74HC21 v.3
Table 1 : Type number 74HCT21PW changed to 74HC21PW.
20090407 Product data sheet 74HC21 v.3
•
The format of this data sheet has been redesigned to comply with the new identity guidelines of NXP Semiconductors.
•
Legal texts have been adapted to the new company name where appropriate.
•
Added type number 74HC21PW (TSSOP14 package).
20041112
74HC_HCT21_CNV v.2
19970828
Product data sheet
Product specification -
74HC_HCT21_CNV v.2
74HC_HCT21 v.1
74HC_HCT21 v.1
19901201 Product specification -
74HC21
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 30 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
11 of 14

NXP Semiconductors
74HC21
Dual 4-input AND gate
Document status
[1][2]
Objective [short] data sheet
Product status
[3]
Development
Preliminary [short] data sheet Qualification
Product [short] data sheet Production
Definition
This document contains data from the objective specification for product development.
This document contains data from the preliminary specification.
This document contains the product specification.
[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.nxp.com
.
15.2 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. NXP Semiconductors 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 NXP Semiconductors 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
NXP Semiconductors and its customer, unless NXP Semiconductors and customer have explicitly agreed otherwise in writing. In no event however, shall an agreement be valid in which the NXP Semiconductors product is deemed to offer functions and qualities beyond those described in the
Product data sheet.
15.3 Disclaimers
Limited warranty and liability — Information in this document is believed to be accurate and reliable. However, NXP Semiconductors 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. NXP Semiconductors takes no responsibility for the content in this document if provided by an information source outside of NXP Semiconductors.
In no event shall NXP Semiconductors 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, NXP Semiconductors’ 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 NXP Semiconductors.
Right to make changes — NXP Semiconductors 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.
74HC21
Product data sheet
Suitability for use — NXP Semiconductors 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 an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. NXP Semiconductors and its suppliers accept no liability for inclusion and/or use of NXP Semiconductors 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. NXP Semiconductors 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 NXP Semiconductors products, and NXP Semiconductors accepts no liability for any assistance with applications or customer product design. It is customer’s sole responsibility to determine whether the NXP
Semiconductors 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.
NXP Semiconductors 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 NXP
Semiconductors 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). NXP 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 — NXP Semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nxp.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. NXP Semiconductors hereby expressly objects to applying the customer’s general terms and conditions with regard to the purchase of NXP Semiconductors 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.
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 30 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
12 of 14

NXP Semiconductors
74HC21
Dual 4-input AND gate
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 NXP Semiconductors 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. NXP
Semiconductors 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 NXP Semiconductors’ warranty of the product for such automotive applications, use and specifications, and (b) whenever customer uses the product for automotive applications beyond
NXP Semiconductors’ specifications such use shall be solely at customer’s own risk, and (c) customer fully indemnifies NXP Semiconductors for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond NXP Semiconductors’ standard warranty and NXP Semiconductors’ 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.
15.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners.
74HC21
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 30 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
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NXP Semiconductors
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15.1
15.2
15.3
15.4
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5
5.1
5.2
6
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 1
Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
Pinning information . . . . . . . . . . . . . . . . . . . . . . 2
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3
Functional description . . . . . . . . . . . . . . . . . . . 3
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 3
Recommended operating conditions. . . . . . . . 4
Static characteristics . . . . . . . . . . . . . . . . . . . . . 4
Dynamic characteristics . . . . . . . . . . . . . . . . . . 5
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Package outline . . . . . . . . . . . . . . . . . . . . . . . . . 8
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 11
Legal information. . . . . . . . . . . . . . . . . . . . . . . 12
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 12
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Contact information. . . . . . . . . . . . . . . . . . . . . 13
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
74HC21
Dual 4-input AND gate
Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’.
© NXP Semiconductors N.V. 2015.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
Date of release: 30 November 2015
Document identifier: 74HC21