SN74CBTS6800

10-BIT FET BUS SWITCH

WITH PRECHARGED OUTPUTS AND SCHOTTKY DIODE CLAMPING

SCDS102A – JUNE 1999 – REVISED JULY 1999

1

POST OFFICE BOX 655303

Minimize Signal Distortion During Live

Insertion

Undershoots up to –2 V

Small-Outline (DB, DBQ), Thin Very

Small-Outline (DGV), Small-Outline (DW),

and Thin Shrink Small-Outline (PW)

Packages

description

The

SN74CBTS6800

provides

ten

bits

of

high-speed TTL-compatible bus switching with

Schottky diodes on the I/Os to clamp undershoot.

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 SN74CBTS6800 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 SN74CBTS6800 is characterized for operation from –40

°C to 85°C.

FUNCTION TABLE

ON

B1–B10

FUNCTION

L

A1–A10

Connect

H

BIASV

Precharge

logic diagram (positive logic)

ON

A1

A10

B1

BIASV

B10

2

11

1

13

23

14

DB, DBQ, DGV, 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

Copyright

© 1999, Texas Instruments Incorporated

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.

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.