5

HV2201

Supertex inc.

1235 Bordeaux Drive, Sunnyvale, CA 94089

Tel: 408-222-8888

www.supertex.com

Truth Table

D0

D1

D2

D3

D4

D5

D6

D7

LE

CLR SW0 SW1 SW2 SW3 SW4 SW5 SW6 SW7

L

L

L

Off

H

L

L

On

L

L

L

Off

H

L

L

On

L

L

L

Off

H

L

L

On

L

L

L

Off

H

L

L

On

L

L

L

Off

H

L

L

On

L

L

L

Off

H

L

L

On

L

L

L

Off

H

L

L

On

L

L

L

Off

H

L

L

On

X

X

X

X

X

X

X

X

H

L

Hold Previous State

X

X

X

X

X

X

X

X

X

H

All Switches Off

Notes:

1.

The eight switches operate independently.

2.

Serial data is clocked in on the L to H transition of the CLK.

3.

The switches go to a state retaining their present condition at the rising edge of LE. When LE is low the shift register data flow through the latch.

4.

D

5.

Shift register clocking has no effect on the switch states if LE is high.

6.

The CLR clear input overrides all other inputs.