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CD54HC21 Datasheet(PDF) 1 Page - Texas Instruments

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Part No. CD54HC21
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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CD54HC21 Datasheet(HTML) 1 Page - Texas Instruments

 
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Data sheet acquired from Harris Semiconductor
SCHS131C
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 ’HC21 and 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 HCT logic family is functionally pin
compatible with the standard LS logic family.
Pinout
CD54HC21
(CERDIP)
CD74HC21, CD74HCT21
(PDIP, SOIC)
TOP VIEW
Ordering Information
PART NUMBER
TEMP. RANGE
(oC)
PACKAGE
CD54HC21F3A
-55 to 125
14 Ld CERDIP
CD74HC21E
-55 to 125
14 Ld PDIP
CD74HC21M
-55 to 125
14 Ld SOIC
CD74HC21MT
-55 to 125
14 Ld SOIC
CD74HC21M96
-55 to 125
14 Ld SOIC
CD74HCT21E
-55 to 125
14 Ld PDIP
CD74HCT21M
-55 to 125
14 Ld SOIC
CD74HCT21MT
-55 to 125
14 Ld SOIC
CD74HCT21M96
-55 to 125
14 Ld SOIC
NOTE: When ordering, use the entire part number. The suffix 96
denotes tape and reel. The suffix T denotes a small-quantity reel of
250.
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 - Revised September 2003
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© 2003, Texas Instruments Incorporated
CD54HC21, CD74HC21,
CD74HCT21
High-Speed CMOS Logic
Dual 4-Input AND Gate
[ /Title
(CD74H
C21,
CD74H
CT21)
/Subject
(High
Speed
CMOS
Logic
Dual 4-
Input


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