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SN74LS393D
(Rev.:1999)

Dual 4−Stage Binary Counter

ON Semiconductor 

SN74LS393

Dual 4-Stage Binary Counter

The SN74LS393 contains a pair of high-speed 4-stage ripple

counters.

Each half of the LS393 operates as a Modulo-16 binary divider, with

the last three stages triggered in a ripple fashion. In the LS393, the

flip-flops are triggered by a HIGH-to-LOW transition of their CP

inputs. Each half of each circuit type has a Master Reset input which

responds to a HIGH signal by forcing all four outputs to the LOW

state.

• Dual Versions

• Individual Asynchronous Clear for Each Counter

• Typical Max Count Frequency of 50 MHz

• Input Clamp Diodes Minimize High Speed Termination Effects

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min Typ Max Unit

VCC

Supply Voltage

TA

Operating Ambient

Temperature Range

4.75 5.0 5.25

V

0

25

70

°C

IOH

Output Current – High

IOL

Output Current – Low

– 0.4 mA

8.0

mA

http://onsemi.com

LOW

POWER

SCHOTTKY

14

1

PLASTIC

N SUFFIX

CASE 646

14

1

SOIC

D SUFFIX

CASE 751A

ORDERING INFORMATION

Device

Package

Shipping

SN74LS393N 14 Pin DIP 2000 Units/Box

SN74LS393D

14 Pin

2500/Tape & Reel

© Semiconductor Components Industries, LLC, 1999

1

December, 1999 – Rev. 0

Publication Order Number:

SN74LS393/D

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