SN74BCT651

OCTAL BUS TRANSCEIVER AND REGISTER

WITH 3STATE OUTPUTS

SCBS054A − AUGUST 1990 − REVISED NOVEMBER 1993

2−4

POST OFFICE BOX 655303

POST OFFICE BOX 1443

logic diagram

A1

2

3

4

B1

SBA

SAB

20

23

1

22

21

1D

1D

C1

C1

OEAB

CLKBA

CLKAB

OEBA

To Seven Other Channels

One of Eight

Channels

− 0.5 V to 7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage range: Control inputs (see Note 1)

− 0.5 V to 7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I/O ports (see Note 1)

− 0.5 V to 5.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

− 0.5 V to 5.5 V

. . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Current into any output in the low state

128 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air temperature range

0

°C to 70°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range

− 65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: The input and output voltage ratings may be exceeded if the input and output current ratings are observed.