SN74BCT2953

OCTAL BUS TRANSCEIVER AND REGISTER

WITH 3STATE OUTPUTS

SCBS105B − DECEMBER 1990 − REVISED NOVEMBER 1993

2−2

POST OFFICE BOX 655303

POST OFFICE BOX 1443

logic diagram (positive logic)

C1

C1

1D

1D

To Seven Other Channels

B1

A1

8

16

OEBA

CLKBA

CLKENBA

OEAB

CLKAB

CLKENAB

11

10

9

13

14

15

−0.5 V to 7 V

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Input voltage range (see Note 1)

−0.5 V to 7 V

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

Voltage range applied to any output in the disabled or power-off state

−0.5 V to 5.5 V

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Voltage range applied to any output in the high state

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

−30 mA

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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 negative-voltage rating may be exceeded if the input clamp-current rating is observed.