Btl 9-bit Data Transceiver - National Semiconductor

The DS3883A is one in a series of transceivers designed specifically for the implementation of high performance Fu- turebus+ and proprietary bus Interfaces The DS3883A is a BTL 9-bit Transceiver designed to conform to IEEE 1194.1 (Backplane Transceiver LogicBTL) as specified in the IEEE 896.2 Futurebus+ specification. Utilization of the DS3883A simplifies the implementation of byte wide address/data with parity lines and also may be used for the Futurebus+ status, tag and command lines. The DS3883A driver output configuration is an NPN open collector which allows Wired-OR connection on the bus. Each driver output incorporates a Schottky Diode in series with its collector to isolate the Transistor output capacitance from the bus thus reducing the bus loading in the inactive state. The combined output capacitance of the driver and re- ceiver input is less than 5 pF. The driver also has high sink current capability to comply with the bus loading require- ments defined within IEEE 1194.1 BTL specification. Backplane Transceiver Logic (BTL) is a signaling standard that was invented and first introduced by National Semicon- ductor, then developed by the IEEE to enhance the perfor- mance of Backplane buses. BTL compatible transceivers feature low output capacitance drivers to minimize bus load- ing, a 1V nominal signal swing for reduced power consump- tion and receivers with precision thresholds for maximum noise immunity. BTL eliminates settling time delays that se- verely limit TTL bus performance, and thus provide signifi- cantly higher bus transfer rates. The Backplane bus is in- tended to be operated with termination resistors (selected to match the bus impedance) connected to 2.1V at both ends. The low voltage is typically 1V. By National Semiconductor Corporation
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DS3883A Pinout, Pinouts
DS3883A pinout,Pin out
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