9-CHANNEL DIFFERENTIAL TRANSCEIVER
SN75976A, SN55976A 9-CHANNEL DIFFERENTIAL TRANSCEIVER
SLLS218B – MAY 1995 – REVISED MAY 1997
D Improved Speed and Pack...
Description
SN75976A, SN55976A 9-CHANNEL DIFFERENTIAL TRANSCEIVER
SLLS218B – MAY 1995 – REVISED MAY 1997
D Improved Speed and Package Replacement
for the SN75LBC976
D Designed to Operate at up to 20 Million
SN75976A DGG or DL SN55976A WD (TOP VIEW)
Data Transfers per Second (Fast-20 SCSI)
D Nine Differential Channels for the Data and
Control Paths of the Small Computer
Systems Interface (SCSI) and Intelligent
Peripheral Interface (IPI)
D SN75976A Packaged in Shrink
Small-Outline Package with 25-Mil Terminal
Pitch (DL) and Thin Shrink Small-Outline
Package with 20-Mil Terminal Pitch (DGG)
D SN55976A Packaged in a 56-Pin Ceramic
Flat Pack (WD)
D Two Skew Limits Available D ESD Protection on Bus Terminals
Exceeds 12 kV
D Low Disabled Supply Current 8 mA Typ D Thermal Shutdown Protection D Positive- and Negative-Current Limiting D Power-Up/Down Glitch Protection
GND 1 BSR 2 CRE 3
1A 4 1DE/RE 5
2A 6 2DE/RE 7
3A 8 3DE/RE 9
4A 10 4DE/RE 11
VCC 12 GND 13 GND 14 GND 15 GND 16 GND 17 VCC 18
5A 19
56 CDE2 55 CDE1 54 CDE0 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+
5DE/RE 20 37 5B –
description
6A 21 36 4B+
The SN75976A is an improved replacement for the industry’s first 9-channel RS-485 transceiver — the SN75LBC976. The A version offers improved switching performance, a smaller package, and higher ESD protection. The SN75976A is offered in two versions. The ’976A2 skew limits of 4 ns for the differential drivers and
6...
Similar Datasheet