Rev.2.00, Oct 06, 2005 page 1 of 7

HD74HC93

4-bit Binary Counter

REJ03D0557-0200

(Previous ADE-205-430)

Rev.2.00

Oct 06, 2005

Description

The HD74HC93 is a 4-bit ripple type counter consisting of four master/slave flip-flops that are internally connected to

provide separate divide-by-two and divide-by-eight sections. Each section has a separate clock input which initiates

state changes of the counter on the high-to-low clock transition. State changes of the Q outputs do not occur

simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and

A gated AND asynchronous reset is provided which resets all the flip-flops.

Because the output from the divide-by-two section is not internally connected to the succeeding stages, the devices may

be operated in various counting modes:

outputs.

2. A 3-bit ripple counter – The input count pulses are applied to the clock B input. Simultaneous frequency divisions

function coincides with reset of the 3-bit ripple-through counter.

Features

• High Speed Operation: t

• High Output Current: Fanout of 10 LSTTL Loads

• Wide Operating Voltage: V

• Low Input Current: 1 µA max

• Low Quiescent Supply Current: I

• Ordering Information

Part Name

Package Type

Package Code

(Previous Code)

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74HC93P

DILP-14 pin

PRDP0014AB-B

(DP-14AV)

P

—

HD74HC93FPEL

SOP-14 pin (JEITA)

PRSP0014DF-B

(FP-14DAV)

FP

EL (2,000 pcs/reel)

HD74HC93RPEL

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.

Function Table

Reset/Count Function Table

Reset Inputs

Outputs

H

H

L

L

L

L

L

X

Count

X

L

Count