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SN74BCT2952NT Datasheet(PDF) 1 Page - Texas Instruments |
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SN74BCT2952NT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 6 page 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 B8 B7 B6 B5 B4 B3 B2 B1 OEAB CLKAB CLKENAB GND VCC A8 A7 A6 A5 A4 A3 A2 A1 OEBA CLKBA CLKENBA DW OR NT PACKAGE (TOP VIEW) SN74BCT2952 OCTAL BUS TRANSCEIVER AND REGISTER WITH 3STATE OUTPUTS SCBS063A − FEBRUARY 1991 − REVISED NOVEMBER 1993 Copyright 1993, Texas Instruments Incorporated 2−1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 • State-of-the-Art BiCMOS Design Significantly Reduces ICCZ • ESD Protection Exceeds 2000 V Per MIL-STD-883C, Method 3015 • Two 8-Bit, Back-to-Back Registers Store Data Flowing in Both Directions • A Port Sinks 24 mA and Sources 3 mA • B Port Sinks 64 mA and Sources 15 mA • Noninverting Outputs • Package Options Include Plastic Small-Outline (DW) Packages and Standard Plastic 300-mil DIPs (NT) description The SN74BCT2952 consists of two 8-bit back-to-back registers that store data flowing in both directions between two bidirectional buses. Data on the A or B bus is stored in the registers on the low-to-high transition of the clock (CLKAB or CLKBA) input provided that the clock-enable (CLKENAB or CLKENBA) input is low. Taking the output-enable (OEAB or OEBA) input low accesses the data on either port. The SN74BCT2952 is characterized for operation from 0 °C to 70°C. FUNCTION TABLE† INPUTS OUTPUT CLKENAB CLKAB OEAB A OUTPUT B H X L X B0‡ X H or L L X B0‡ L ↑ LL L L ↑ LH H X X H X Z † A-to-B data flow is shown; B-to-A data flow is similar but uses CLKENBA, CLKBA, and OEBA. ‡ Level of B before the indicated steady-state input conditions were established. 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. 31 B1 8 A1 16 A2 17 A3 18 A4 19 EN3 15 1 C5 B2 7 B3 6 B4 5 A5 20 A6 21 A7 22 A8 23 B5 4 B6 3 B7 2 B8 1 G2 11 G1 13 EN4 9 2 C6 4 5D 1 6D OEBA CLKENBA OEAB CLKENAB 14 CLKBA 10 CLKAB logic symbol§ § This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. |
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