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SN74FB2033K Datasheet(PDF) 1 Page - Texas Instruments |
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SN74FB2033K Datasheet(HTML) 1 Page - Texas Instruments |
1 / 14 page SN74FB2033K 8-BIT TTL/BTL REGISTERED TRANSCEIVER SCBS472G – MAY 1994 – REVISED SEPTEMBER 2001 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Compatible With IEEE Std 1194.1-1991 (BTL) D TTL A Port, Backplane Transceiver Logic (BTL) B Port D Open-Collector B-Port Outputs Sink 100 mA D BIAS VCC Pin Minimizes Signal Distortion During Live Insertion/Withdrawal D High-Impedance State During Power Up and Power Down D B-Port Biasing Network Preconditions the Connector and PC Trace to the BTL High-Level Voltage D TTL-Input Structures Incorporate Active Clamping Networks to Aid in Line Termination 14 15 16 17 18 19 20 21 22 23 24 25 26 52 51 50 49 48 47 46 45 44 43 42 41 40 RC PACKAGE (TOP VIEW) GND AO2 AI3 AO3 AI4 AO4 LOOPBACK AI5 AO5 AI6 AO6 AI7 GND GND B2 GND B3 GND B4 GND B5 GND B6 GND B7 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 39 38 37 36 35 34 33 32 31 30 29 28 27 description The SN74FB2033K is an 8-bit transceiver featuring a split input (AI) and output (AO) bus on the TTL-level A port. The common I/O, open-collector B port operates at backplane transceiver logic (BTL) signal levels. The SN74FB2033K is specifically designed to be compatible with IEEE Std 1194.1-1991. The logic element for data flow in each direction is configured by two mode inputs (IMODE1 and IMODE0 for B-to-A, OMODE1 and OMODE0 for A-to-B) as a buffer, a D-type flip-flop, or a D-type latch. When configured in the buffer mode, the inverted input data appears at the output port. In the flip-flop mode, data is stored on the rising edge of the appropriate clock input (CLKAB/LEAB or CLKBA/LEBA). In the latch mode, the clock inputs serve as active-high transparent latch enables. Copyright 2001, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. |
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