SN74CBT3345

8BIT FET BUS SWITCH

SCDS027I − MAY 1995 − REVISED JANUARY 2004

1

POST OFFICE BOX 655303

description/ordering information

The

SN74CBT3345

provides

eight

bits

of

high-speed TTL-compatible bus switching in a

standard ’245 device pinout. The low on-state

resistance of the switch allows connections to be

made with minimal propagation delay.

The device is organized as one 8-bit switch bank

with dual output-enable (OE and OE) inputs.

When OE is low or OE is high, the switch is on, and

port A is connected to port B. When OE is high and

OE is low, the switch is open, and the

high-impedance state exists between the two

ports.

ORDERING INFORMATION

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

SOIC − DW

Tube

SN74CBT3345DW

CBT3345

SOIC − DW

Tape and reel

SN74CBT3345DWR

CBT3345

SSOP − DB

Tape and reel

SN74CBT3345DBR

CU345

−40

°C to 85°C

SSOP (QSOP) − DBQ

Tape and reel

SN74CBT3345DBQR

CBT3345

−40 C to 85 C

TSSOP − PW

Tube

SN74CBT3345PW

CU345

TSSOP − PW

Tape and reel

SN74CBT3345PWR

CU345

TVSOP − DGV

Tape and reel

SN74CBT3345DGVR

CU345

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design

guidelines are available at www.ti.com/sc/package.

FUNCTION TABLE

INPUTS

FUNCTION

OE

OE

FUNCTION

H

X

A port = B port

X

L

A port = B port

L

H

Disconnect

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

 2004, 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.

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

OE

A1

A2

A3

A4

A5

A6

A7

A8

GND

OE

B1

B2

B3

B4

B5

B6

B7

B8

DB, DBQ, DGV, DW, OR PW PACKAGE

(TOP VIEW)