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SN75LBC978

Texas Instruments
Part Number SN75LBC978
Manufacturer Texas Instruments
Description 9-Channel DIFFERENTIAL TRANSCEIVER
Published Aug 30, 2019
Detailed Description SN75LBC978 9ĆCHANNEL DIFFERENTIAL TRANSCEIVER SLLS134F − APRIL 1992 − REVISED APRIL 2005 D Nine Differential Channels ...
Datasheet PDF File SN75LBC978 PDF File

SN75LBC978
SN75LBC978

Overview
SN75LBC978 9ĆCHANNEL DIFFERENTIAL TRANSCEIVER SLLS134F − APRIL 1992 − REVISED APRIL 2005 D Nine Differential Channels for the Data and Control Paths of the Differential Small Computer Systems Interface (SCSI) D Meets or Exceeds the Requirements of ANSI Standard RS-485 and ISO 8482:1987(E) D Packaged in Shrink Small-Outline Package With 25-mil Terminal Pitch D Designed to Operate at 10 Million Transfers Per Second D Low Disabled Supply Current 1.
4 mA Typ D Thermal Shutdown Protection D Power-Up/Power-Down Glitch Protection D Positive and Negative Output-Current Limiting D Open-Circuit Fail-Safe Receiver Design description The SN75LBC978 is a nine-channel differential transceiver based on the 75LBC176 LinASIC cell.
Use of TI’s LinBiCMOS† process technology allows the power reduction necessary to integrate nine differential balanced 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 the Small Computer Systems Interface (SCSI) standard.
The WRAP function allows in-circuit testing and wired-OR channels for the BSY, RST, and SEL signals of the SCSI bus.
The SN75LBC978 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.
DL PACKAGE (TOP VIEW) NC WRAP2 WRAP1 1A 1DE/RE 2A 2DE/RE 3A 3DE/RE 4A 4DE/RE VCC GND GND GND GND GND VCC 5A 5DE/RE 6A 6DE/RE 7A 7DE/RE 8A 8DE/RE 9A 9DE/RE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 NC 55 NC 54 CE 53 9B + 52 9B − 51 8B + 50 8B − 49 7B + 48 7B − 47 6B + 46 6B − 45 VCC 44 GND 43 GND 42 GND 41 GND 40 GND 39 VCC 38 5B + 37 5B − 36 4B + 35 4B − 34 3B + 33 3B − 32 2B + 31 2B − 30 1B + 29 1B − Pins 13 through 17 and 40 through 44 are connected together to the package lead frame and signal ground.
The switching speed of the SN75LBC978 is sufficient t...


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