1

Data sheet acquired from Harris Semiconductor

SCHS229A

Features

• Typical Propagation Delay

• Exceeds 2kV ESD Protection MIL-STD-883, Method

3015

• SCR-Latchup-Resistant CMOS Process and Circuit

Design

• Speed of Bipolar FAST™/AS/S with Significantly

Reduced Power Consumption

• Balanced Propagation Delays

• AC Types Feature 1.5V to 5.5V Operation and

Balanced Noise Immunity at 30% of the Supply

•

±24mA Output Drive Current

- Fanout to 15 FAST™ ICs

- Drives 50

Ω Transmission Lines

Description

The CD74AC20 and ’ACT20 are dual 4-input NAND gates that

utilize Advanced CMOS Logic technology.

Pinout

CD54ACT20

(CERDIP)

CD74AC20, CD74ACT20

(PDIP, SOIC)

TOP VIEW

Functional Diagram

Ordering Information

PART

NUMBER

TEMP.

PACKAGE

CD74AC20E

-55 to 125

14 Ld PDIP

CD74AC20M

-55 to 125

14 Ld SOIC

CD54ACT20F3A

-55 to 125

14 Ld CERDIP

CD74ACT20E

-55 to 125

14 Ld PDIP

CD74ACT20M

-55 to 125

14 Ld SOIC

NOTES:

1. When ordering, use the entire part number. Add the suffix 96 to

obtain the variant in the tape and reel.

2. Wafer and die for this part number is available which meets all elec-

trical specifications. Please contact your local TI sales office or cus-

tomer service for ordering information.

1A

1B

NC

1C

1D

1Y

GND

2D

2C

NC

2B

2A

2Y

1

2

3

4

5

6

7

14

13

12

11

10

9

8

TRUTH TABLE

INPUTS

OUTPUTS

nA

nB

nC

nD

nY

L

XXX

H

XLX

X

H

XX

L

X

H

XXX

L

H

HHHH

L

X = Don’t Care

1A

1C

2A

2B

2D

1

4

5

9

12

13

6

2Y

1Y

8

1D

GND = 7

NC = 3, 11

2C

1B

2

10

September 1998 - Revised May 2000

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

FAST™ is a Trademark of Fairchild Semiconductor.

Copyright

CD74AC20,

CD54/74ACT20

Dual 4-Input NAND Gate

[ /Title

(CD74

AC20,

CD74

ACT20

)

/Sub-

ject

(Dual

4-Input

NAND

Gate)

/Autho

r ()

/Key-

words

(Har-

ris

Semi-

con-

ductor,

Advan

ced

CMOS

, Harris

Semi-

con-

ductor,

Advan

ced

TTL)

/Cre-

ator ()