DS36954 Datasheet | National Semiconductor

Description The DS36954 is a low power, quad EIA-485 differential bus transceiver especially suited for high speed, parallel, multipoint, I/O bus applications. A pact 20-pin surface mount PLCC or SOIC package provides high transceiver integration and a very small PC board footprint. Propagation delay skew between devices is specified to aid in parallel interface designs - limits on maximum and minimum delay times are guaranteed. Five devices can implement a plete SCSI initiator or target interface. Three transceivers in a package are pinned out for data bus connections. The fourth transceiver, with the flexibility provided by its individual enables, can serve as a control bus transceiver. Features n n n n n n Pinout for SCSI interface pact 20-pin PLCC or SOIC package Meets EIA-485 standard for multipoint bus transmission Greater than 60 m A source/sink currents Thermal shutdown protection Glitch-free driver outputs on power up and down Connection Diagrams Logic Diagrams DS011014-1 Order Number DS36954V See NS Package Number V20A DS011014-2 DS011014-19 Order Number DS36954M See NS Package Number M20B TRI-STATE ® is a registered trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS011014 .national. Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage 7V Control Input Voltage VCC + 0.5V Driver Input Voltage VCC + 0.5V Driver Output Voltage/ Receiver Input Voltage - 10V to +15V Receiver Output Voltage 5.5V Continuous Power Dissipation @ +25˚C V Package 1.73W M Package 1.73W Derate V Package 13.9 m W/˚C above +25˚C Derate M Package Storage Temperature Range Lead Temperature (Soldering 4 Sec.) 13.7 m W/˚C above +25˚C - 65˚C to +150˚C 260˚C Remended Operating Conditions Supply Voltage, VCC Bus Voltage Operating Free Air Temperature (TA) Min 4.75 - 7 0 Max 5.25 +12 +70...