1

Data sheet acquired from Harris Semiconductor

SCHS133

Features

• Buffered Inputs and Outputs

• Fanout (Over Temperature Range)

- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

• Balanced Propagation Delay and Transition Times

• Significant Power Reduction Compared to LSTTL

Logic ICs

• HC Types

- 2V to 6V Operation

• HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

Description

The

Harris

CD74HC42,

CH74HCT42

BCD-to-Decimal

Decoders utilize silicon-gate CMOS technology to achieve

operating speeds similar to LSTTL decoders with the low

power consumption of standard CMOS integrated circuits.

These devices have the capability of driving 10 LSTLL loads

and are compatible with the standard 74LS logic family. One

of ten outputs (low on select) is selected in accordance with

the BCD input. Non-valid BCD inputs result in none of the

outputs being selected (all outputs are high).

Pinout

CD74HC42, CD74HCT42

(PDIP, SOIC)

TOP VIEW

Ordering Information

PART NUMBER

PACKAGE

PKG.

NO.

CD74HC42E

-55 to 125

16 Ld PDIP

E16.3

CD74HCT42E

-55 to 125

16 Ld PDIP

E16.3

CD74HC42M

-55 to 125

16 Ld SOIC

M16.15

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.

14

15

16

9

13

12

11

10

1

2

3

4

5

7

6

8

Y0

Y1

Y2

Y3

Y4

Y5

GND

Y6

A1

A2

A3

Y9

Y8

Y7

A0

August 1997

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

Copyright

CD74HC42,

CD74HCT42

High Speed CMOS Logic

BCD To Decimal Decoder (1 of 10)

File Number

1689.1

[ /Title

(CD74H

C42,

CD74H

CT42)

/Subject

(High

Speed

CMOS

Logic

BCD To

Deci-