SN74HC21-Q1_15 Datasheet, PDF (1/13 Pages) Texas Instruments – DUAL 4-INPUT POSITIVE-AND GATE

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
SN74HC21-Q1
DUAL 4-INPUT POSITIVE-AND GATE
SCLS597A − NOVEMBER 2004 − REVISED APRIL 2008
D OR PW PACKAGE
(TOP VIEW)
1A 1
1B 2
NC 3
1C ⁴
1D ⁵
1Y ⁶
GND ⁷
14 V_CC
13 2D
12 2C
11 _NC
10 _2B
9 _2A
8 _2Y
description/ordering information
This device contains two independent 4-input AND gates. It performs the Boolean function
Y + A • B • C • D or Y + A ) B ) C ) D in positive logic.
ORDERING INFORMATION^{
T_A
PACKAGE^‡
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SOIC − D
−40°C to 125°C
TSSOP − PW
Reel of 2500
Reel of 2000
SN74HC21QDRQ1
SN74HC21QPWRQ1
HC21Q
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
Y
H
H
H
H
H
L
X
X
X
L
X
L
X
X
L
X
X
L
X
L
X
X
X
L
L
logic diagram (positive logic)
1A
1B
1C
1D
1
2
4
5
6 _1Y
2A
2B
2C
2D
9
10
12
13
8 _2Y
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.
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright  2008, Texas Instruments Incorporated
1