U74HCT165

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 8

www.unisonic.com.tw

QW-R502-B32.B



PIN CONFIGURATION



FUNCTION TABLE

Inputs

Qn Registers

Outputs

Operating Modes

SH/ LD

CLK/INH

CLK

SER

A to H

Q0

Q1 to Q6

H

Q

L

X

X

X

L

L

L to L

L

H

Parallel Load

L

X

X

X

H

H

H to H

H

L

H

L

↑

I

X

L

q0 to q 5

q6

6

q

H

L

↑

h

X

H

q0 to q 5

q6

6

q

H

↑

L

I

X

L

q0 to q 5

q6

6

q

Serial Shift

H

↑

L

h

X

H

q0 to q 5

q6

6

q

H

H

X

X

X

Q0

q1 to q6

q7

7

q

Hold “Do Nothing”

H

X

H

X

X

Q0

q1 to q6

q7

7

q

Notes: H=HIGH Voltage Level;

L=LOW Voltage Level;

l= LOW Voltage Level one set-up time prior to the LOW-to-HIGH clock transition;

q=state of the referenced output one set-up time prior to the LOW-to-HIGH clock transition;

X=don’t care;

↑= LOW-to-HIGH clock transition.