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CD74HC21 Datasheet(PDF) 1 Page - Texas Instruments

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Part No. CD74HC21
Description  High Speed CMOS Logic Dual 4-Input AND Gate
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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CD74HC21 Datasheet(HTML) 1 Page - Texas Instruments

   
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Data sheet acquired from Harris Semiconductor
SCHS131
Features
• Buffered Inputs
• Typical Propagation Delay: 9ns at VCC = 5V,
CL = 15pF, TA = 25
oC
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55oC to 125oC
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC
at VCC = 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
VIL= 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH
Description
The Harris CD74HC21, CD74HCT21, logic gates utilize
silicon gate CMOS technology to achieve operating speeds
similar to LSTTL gates with the low power consumption of
standard CMOS integrated circuits. All devices have the
ability to drive 10 LSTTL loads. The 74HCT logic family is
functionally pin compatible with the standard 74LS logic
family.
Pinout
CD74HC21, CD74HCT21
(PDIP, SOIC)
TOP VIEW
Ordering Information
PART NUMBER
TEMP. RANGE
(oC)
PACKAGE
PKG.
NO.
CD74HC21E
-55 to 125
14 Ld PDIP
E14.3
CD74HCT21E
-55 to 125
14 Ld PDIP
E14.3
CD74HC21M
-55 to 125
14 Ld SOIC
M14.15
CD74HCT21M
-55 to 125
14 Ld SOIC
M14.15
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Die for this part number is available which meets all electrical
specifications. Please contact your local sales office or Harris
customer service for ordering information.
1A
1B
NC
1C
1D
1Y
GND
VCC
2D
2C
NC
2B
2A
2Y
1
2
3
4
5
6
7
14
13
12
11
10
9
8
August 1997
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© Harris Corporation 1997
CD74HC21,
CD74HCT21
High Speed CMOS Logic
Dual 4-Input AND Gate
File Number
1782.1
[ /Title
(CD74H
C21,
CD74H
CT21)
/Subject
(High
Speed
CMOS
Logic
Dual 4-
Input


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