SN75LBC976

9CHANNEL DIFFERENTIAL TRANSCEIVER

SLLS133D − AUGUST 1992 − REVISED MAY 1995

Copyright

2−1

POST OFFICE BOX 655303

POST OFFICE BOX 1443

Control Paths of the Differential Small

Computer Systems Interface (SCSI) and

Intelligent Peripheral Interface (IPI-2)

ANSI Standard RS-485 and

ISO 8482:1987(E)

With 25-mil Terminal Pitch

Per Second

1.4 mA Typical

Limiting

description

The SN75LBC976 is a nine-channel differential

transceiver based on the 75LBC176 LinASIC



cell.

Use

of

TI’s

LinBiCMOS

technology allows the power reduction necessary

to integrate nine differential transceivers. On-chip

enabling logic makes this device applicable for the

data path (eight data bits plus parity) and the

control path (nine bits) for both the Small

Computer Systems Interface (SCSI) and the

Intelligent Peripheral Interface (IPI-2) standard

data interfaces.

The SN75LBC976 is packaged in a shrink

small-outline package (DL) with improved thermal

characteristics using heat-sink terminals. This

package is ideal for low-profile, space-restricted

applications such as hard disk drives.

The switching speed and testing capabilities of the SN75LBC976 are sufficient to transfer data over the data

bus at 10 million transfers per second. Each of the nine channels conforms to the requirements of the ANSI

RS-485 and ISO 8482:1987(E) standards referenced by ANSI X3.129-1986 (IPI), ANSI X3.131-1993 (SCSI-2),

and the proposed SCSI-3 standards.

The SN75LBC976 is characterized for operation from 0

°C to 70°C.

LinASIC and LinBiCMOS are trademarks of Texas Instruments Incorporated.

† Patent pending

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GND

BSR

CRE

1A

1DE/RE

2A

2DE/RE

3A

3DE/RE

4A

4DE/RE

GND

GND

GND

GND

GND

5A

5DE/RE

6A

6DE/RE

7A

7DE/RE

8A

8DE/RE

9A

9DE/RE

CDE2

CDE1

CDE0

9B +

9B −

8B +

8B −

7B +

7B −

6B +

6B −

GND

GND

GND

GND

GND

5B +

5B −

4B +

4B −

3B +

3B −

2B +

2B −

1B +

1B −

DL PACKAGE

(TOP VIEW)

Pins 13 through 17 and 40 through 44

are connected together to the package

lead frame and signal ground.

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.