CD74HC21 datasheet(1/6 Pages) TI

Teilenummer	CD74HC21

Bauteilbeschribung	High Speed CMOS Logic Dual 4-Input AND Gate

PDF	6 Pages

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Hersteller	TI [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

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

Ähnliche Beschreibung - CD74HC21

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