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SN74LS393

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

© Semiconductor Components Industries, LLC, 2006

July, 2006 − Rev. 2

14

1

SOEIAJ

M SUFFIX

CASE 965

ORDERING INFORMATION

Device

Package

Shipping

SN74LS393N

14 Pin DIP 2000 Units/Box

SN74LS393D

SOIC−14

55 Units/Rail

SN74LS393DR2 SOIC−14 2500/Tape & Reel

SN74LS393M

SOEIAJ−14 See Note 1

SN74LS393MEL SOEIAJ−14 See Note 1

1. For ordering information on the EIAJ version of

the SOIC package, please contact your local

ON Semiconductor representative.

1

Publication Order Number:

SN74LS393/D

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