SN65LBC170, SN75LBC170

TRIPLE DIFFERENTIAL TRANSCEIVERS

SLLS459C − NOVEMBER 2000 − REVISED MARCH 2005

1

POST OFFICE BOX 655303

Package

8482, and ANSI X3.277 (HVD SCSI Fast−20)

Applications

–7 V to 12 V

Exceeds 12 kV

Limiting

Operation

description

The

SN65LBC170

and

SN75LBC170

are

monolithic

integrated

circuits

designed

for

bidirectional data communication on multipoint

bus-transmission lines. Potential applications

include serial or parallel data transmission, cabled

peripheral buses with twin axial, ribbon, or

twisted-pair cabling. These devices are suitable

for FAST-20 SCSI and can transmit or receive

data pulses as short as 25 ns, with skew less

than 3 ns.

These devices combine three 3-state differential

line drivers and three differential input line

receivers, all of which operate from a single 5-V

power supply.

The driver differential outputs and the receiver

differential inputs are connected internally to form

three differential input/output (I/O) bus ports that

are designed to offer minimum loading to the bus

ports feature a wide common-mode voltage range

making

the

device

suitable

for

party-line

applications over long cable runs.

Copyright

 2002, 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.

†The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).

logic diagram

1A

1DIR

1B

2A

2B

3A

3B

1D

2DIR

2D

3DIR

3D

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

1D

1DIR

NC

GND

NC

2D

2DIR

NC

3D

3DIR

1B

1A

NC

NC

2B

2A

3B

3A

NC

SN65LBC170DW (marked as 65LBC170)

SN75LBC170DW (marked as 75LBC170)

(TOP VIEW)

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1D

1DIR

NC

GND

2D

2DIR

3D

3DIR

1B

1A

NC

2B

2A

3B

3A

SN65LBC170DB (marked as BL170)

SN75LBC170DB (marked as BL170)

(TOP VIEW)

NC − No internal connection