Datasheet

SN74HC21-Q1
DUAL 4-INPUT POSITIVE-AND GATE
SCLS597A − NOVEMBER 2004 − REVISED APRIL 2008
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
D Qualified for Automotive Applications
D Wide Operating Voltage Range of 2 V to 6 V
D Outputs Can Drive up to Ten LSTTL Loads
D Low Power Consumption, 20-µA Max I
CC
D Typical t
pd
= 11 ns
D ±4-mA Output Drive at 5 V
D Low Input Current of 1 µA Max
description/ordering information
This device contains two independent 4-input AND gates. It performs the Boolean function
Y + A B C Dor Y+ A
) B ) C ) D
in positive logic.
ORDERING INFORMATION
{
T
A
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
40°C to 125°C
SOIC − D Reel of 2500 SN74HC21QDRQ1 HC21Q
−40°C to 125°C
TSSOP − PW Reel of 2000 SN74HC21QPWRQ1 HC21Q
For the most current package and ordering information, see the Package Option Addendum at the end of this
document, or see the TI web site at http://www.ti.com.
Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.
FUNCTION TABLE
(each gate)
INPUTS
OUTPUT
A B C D
OUTPUT
Y
H H H H H
L XXX L
X LXX L
X XLX L
X X X L L
logic diagram (positive logic)
1A
1Y
1B
1C
1D
2A
2Y
2B
2C
2D
1
2
4
5
9
10
12
13
68
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1A
1B
NC
1C
1D
1Y
GND
V
CC
2D
2C
NC
2B
2A
2Y
D OR PW PACKAGE
(TOP VIEW)
Copyright 2008, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

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