8.8

3

IDT74FCT163646/A/C

3.3V 16-BIT BUS TRANSCEIVER/REGISTERS

COMMERCIAL TEMPERATURE RANGES

2778 tbl 02

NOTES:

1. The data output functions may be enabled or disabled by various signals at the x

OE or xDIR inputs. Data

input functions are always enabled, i.e. data at the bus pins will be stored on every LOW-to-HIGH transition

on the clock inputs.

2. H = HIGH Voltage Level

L = LOW Voltage Level

X = Don’t Care

↑ =LOW-to-HIGH Transition

FUNCTION TABLE

(2)

Inputs

Operation or Function

x

OE

OE

xDIR

xCLKAB

xCLKBA

xSAB

xSBA

xAx

xBx

H

H

X

X

H or L

↑

H or L

↑

X

X

X

X

Input

Input

Isolation

Store A and B Data

L

L

L

L

X

X

X

H or L

X

X

L

H

Output

Input

Real Time B Data to A Bus

Stored B Data to A Bus

L

L

H

H

X

H or L

X

X

L

H

X

X

Input

Output

Real Time A Data to B Bus

Stored A Data to B Bus