SN75970B

SN75970B SCSI DIFFERENTIAL CONVERTER-CONTROL SLLS323A – NOVEMBER 1999 – REVISED JANUARY 2000 D Provides High-Voltage Differential SCSI from Single-Ended Controller When Used DGG OR DL PACKAGE (TOP VIEW) With the SN75971B Data Transceiver D Nine Transceivers Meet or Exceed the Requirements of ANSI Standard EIA-485 and ISO-8482 Standards D ESD Protection on Bus Pins to 12 kV D Packaged in Shrink Small-Outline Package with 25 mil Terminal Pitch and Thin Small-Package with 20 mil Terminal Pitch D Low Disabled Supply Current 32 mA Typ D Thermal Shutdown Protection D Positive- and Negative-Current Limiting D Power-Up/-Down Glitch Protection D Open-Circuit Failsafe Receivers RSTFLTR RESET DSENS CLK40 GND AATN – TEST AACK – TIMEOUT AREQ – AC/D – VCC GND GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 56 X2 55 X1/CLK20 54 NC 53 BATN – 52 BATN+ 51 BACK – 50 BACK+ 49 BREQ – 48 BREQ+ 47 BC/D – 46 BC/D+ 45 VCC 44 GND 43 GND description GND 15 GND 16 42 GND 41 GND The SN75970B SCSI differential converter- GND 17 40 GND control, when used in conjunction with one or more of its companion data transceiver(s), VCC 18 DRVBUS 19 39 VCC 38 BMSG – provides the superior electrical performance of SDB 20 37 BMSG+ differential SCSI from a single-ended SCSI bus AMSG – 21 36 BI/O – controller. A 16-bit, Fast-SCSI bus can be implemented with just three devices (two for data and one for control) in the space-efficient, 56-pin, shrink small-outline package (SSOP) as well as the even smaller TSSOP ...