SN74CBT6800A

10-BIT FET BUS SWITCH

WITH PRECHARGED OUTPUTS

SCDS005L – MARCH 1993 – REVISED JULY 1999

1

POST OFFICE BOX 655303

Minimize Signal Distortion During Live

Insertion

Small-Outline (DB, DBQ), Small-Outline

(DW), and Thin Shrink Small-Outline (PW)

Packages

description

The

SN74CBT6800A

provides

ten

bits

of

high-speed TTL-compatible bus switching. The

low on-state resistance of the switch allows

bidirectional connections to be made while adding

near-zero propagation delay. The device also

precharges the B port to a user-selectable bias

voltage (BIASV) to minimize live-insertion noise.

The SN74CBT6800A is organized as one 10-bit switch with a single enable (ON) input. When ON is low, the

switch is on and port A is connected to port B. When ON is high, the switch between port A and port B is open.

The SN74CBT6800A is characterized for operation from –40

°C to 85°C.

FUNCTION TABLE

INPUT

ON

FUNCTION

L

A port = B port

H

A port = Z

B port = BIASV

logic diagram (positive logic)

ON

A1

A10

B1

BIASV

B10

2

11

1

13

23

14

DB, DBQ, DW, OR PW PACKAGE

(TOP VIEW)

ON

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

GND

B1

B2

B3

B4

B5

B6

B7

B8

B9

B10

BIASV

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright

© 1999, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.