74HC40103N View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

74HC40103N

8-bit synchronous binary down counter

Philips Electronics 

Philips Semiconductors

8-bit synchronous binary down counter

Product specification

74HC/HCT40103

Fig.4 Functional diagram.

FUNCTION TABLE

CONTROL INPUTS

MR

PL

H

H

H

H

H

H

H

L

L

X

PE

TE

H

H

H

L

L

X

X

X

X

X

PRESET MODE ACTION

synchronous

asynchronous

inhibit counter

count down

preset on next LOW-to HIGH clock transition

preset asynchronously

clear to maximum count

Note

1. Clock connected to CP.

Synchronous operation: changes occur on the LOW-to-HIGH CP transition.

Jam inputs: MSD = P7, LSD = P0.

H = HIGH voltage level

L = LOW voltage level

X = don’t care

APPLICATIONS

• Divide-by-n counters

• Programmable timers

• Interrupt timers

• Cycle/program counters

1998 Jul 08

4

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