Rev.2.00, Feb.18.2005, page 1 of 6

HD74LS393

Dual 4-bit Binary Counters

REJ03D0486–0200

Rev.2.00

Feb.18.2005

This circuit contains eight master-slave flip-flops and additional gating to implement two individual four-bit counters.

The HD74LS393 comprises two independent four-bit binary counters each having a clear and a clock input.

N-bit binary counter can be implemented with each package providing the capability of divide-by-258.

Features

• Ordering Information

Part Name

Package Type

Package Code

(Previous Code)

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74LS393P

DILP-14 pin

PRDP0014AB-B

(DP-14AV)

P

—

HD74LS393FPEL

SOP-14 pin (JEITA)

PRSP0014DF-B

(FP-14DAV)

FP

EL (2,000 pcs/reel)

HD74LS393RPEL

SOP-14 pin (JEDEC)

PRSP0014DE-A

(FP-14DNV)

RP

EL (2,500 pcs/reel)

Note:

Please consult the sales office for the above package availability.

Pin Arrangement

(Top view)

2A

2Clear

1A

GND

1Clear

1

2

3

4

5

6

7

14

8

9

10

11

12

13

CLR

CLR

A

A

Outputs

Outputs