Rev.2.00, Feb.18.2005, page 1 of 5

HD74LS148

8-line-to-3-line Octal Priority Encoder

REJ03D0437–0200

Rev.2.00

Feb.18.2005

The HD74LS148 encodes eight data lines to three-line (4-2-1) binary (octal). Cascading circuitry (enable input EI and

enable output EO) has been provided to allow octal expansion without the need for external circuitry. The data inputs

and outputs are active at the low logic level.

Features

• Ordering Information

Part Name

Package Type

Package Code

(Previous Code)

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74LS148P

DILP-16 pin

PRDP0016AE-B

(DP-16FV)

P

—

HD74LS148FPEL

SOP-16 pin (JEITA)

PRSP0016DH-B

(FP-16DAV)

FP

EL (2,000 pcs/reel)

Note:

Please consult the sales office for the above package availability.

Pin Arrangement

(Top view)

GND

15

16

1

2

3

4

5

6

7

14

8

9

10

11

12

13

4

5

7

6

EO

0

1

3

GS

4

5

6

7

EI

0

1

2

3

GS

EO

EI

2

Inputs

Outputs

Inputs

Outputs

Outputs