74HCT160DB View Datasheet(PDF) - Philips Electronics

Part Name

Description

MFG CO.

74HCT160DB

Presettable synchronous BCD decade counter; asynchronous reset

Philips Electronics 

Philips Semiconductors

Presettable synchronous BCD decade

counter; asynchronous reset

Product specification

74HC/HCT160

Fig.4 Functional diagram.

FUNCTION TABLE

OPERATING MODE

reset (clear)

parallel load

count

hold

(do nothing)

INPUTS

OUTPUTS

MR

CP

CEP CET PE

Dn

Qn

TC

L

X

X

X

X

X

L

L

H

↑

X

X

I

I

L

L

H

↑

X

X

I

h

H

(1)

H

↑

h

h

h

X

count

(1)

H

X

I

X

h

X

qn

(1)

H

X

X

I

h

X

qn

L

Notes

1. The TC output is HIGH when CET is HIGH and the counter is at terminal count (HLLH).

H = HIGH voltage level

h = HIGH voltage level one set-up time prior to the LOW-to-HIGH CP transition

L = LOW voltage level

I = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition

q = lower case letters indicate the state of the referenced output one set-up time prior to the LOW-to-HIGH CP

transition

X = don’t care

↑ = LOW-to-HIGH CP transition

December 1990

4

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