SN74FB1651

17-BIT TTL/BTL UNIVERSAL STORAGE TRANSCEIVER

WITH BUFFERED CLOCK LINE

SCBS177L – OCTOBER 1993 – REVISED SEPTEMBER 1999

2

POST OFFICE BOX 655303

description

The SN74FB1651 device contains an 8-bit and a 9-bit transceiver with a buffered clock. The clock and the

transceivers are designed to translate signals between TTL and backplane transceiver-logic (BTL)

environments. It is designed specifically to be compatible with IEEE Std 1194.1-1991.

The B port operates at BTL-signal levels. The open-collector B ports are specified to sink 100 mA. Two output

the B port is turned off.

The A port operates at TTL-signal levels. The A outputs reflect the inverse of the data at the B port when the

high-impedance state.

The SN74FB1651 is characterized for operation from 0

°C to 70°C.

Function Tables

TRANSCEIVER

INPUTS

FUNCTION

OEA

OEA

OEB

OEB

FUNCTION

X

X

H

L

A data to B bus

L

H

X

X

B data to A bus

L

H

H

L

A data to B bus, B data to A bus

X

X

L

X

B bus isolation

X

XX

H

B-bus isolation

H

X

X

X

A bus isolation

X

L

X

X

A-bus isolation

STORAGE MODE

INPUTS

FUNCTION

LE

CLK

FUNCTION

H

X

Transparent

L

↑

Store data

L

L

Storage