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Details, datasheet, quote on part number:SN74ABT2952ADBR
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Datasheet text preview:
SN54ABT2952A, SN74ABT2952A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SCBS203D AUGUST 1992 REVISED JANUARY 1998
D D D D D D D
State-of-the-Art EPIC-BTM BiCMOS Design Significantly Reduces Power Dissipation Two 8-Bit Back-to-Back Registers Store Data Flowing in Both Directions Noninverting Outputs Typical VOLP (Output Ground Bounce) < 1 V at VCC = 5 V, TA = 25°C Latch-Up Performance Exceeds 500 mA Per JESD 17 ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0) Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages, Ceramic Chip Carriers (FK), Ceramic Flat (W) Package, and Plastic (NT) and Ceramic (JT) DIPs
SN54ABT2952A . . . JT OR W PACKAGE SN74ABT2952A . . . DB, DW, PW, OR NT PACKAGE (TOP VIEW)
B8 B7 B6 B5 B4 B3 B2 B1 OEAB CLKAB CLKENAB GND
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
VCC A8 A7 A6 A5 A4 A3 A2 A1 OEBA CLKBA CLKENBA
SN54ABT2952A . . . FK PACKAGE (TOP VIEW)
description
The 'ABT2952A transceivers consist 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. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The SN54ABT2952A is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74ABT2952A is characterized for operation from 40°C to 85°C.
B5 B4 B3 NC B2 B1 OEAB
5 6 7 8 9
B6 B7 B8 NC VCC A8 A7
4 3 2 1 28 27 26 25 24 23 22 21 10 20 11 19 12 13 14 15 16 17 18
A6 A5 A4 NC A3 A2 A1
NC No internal connection
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. EPIC is a trademark of 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.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
CLKAB CLKENAB GND NC CLKENBA CLKBA OEBA
Copyright © 1998, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.
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SN54ABT2952A, SN74ABT2952A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SCBS203D AUGUST 1992 REVISED JANUARY 1998
FUNCTION TABLE INPUTS CLKENAB H X L L X CLKAB X H or L X OEAB L L L L H A X X L H X OUTPUT B B0 B0 L H
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
logic symbol§
OEBA CLKENBA CLKBA OEAB CLKENAB CLKAB A1 15 13 14 9 11 10 16 EN3 G1 1 C5 EN4 G2 2 C6 3 6D A2 A3 A4 A5 A6 A7 A8 17 18 19 20 21 22 23 1 1 5D 4 7 6 5 4 3 2 1 B2 B3 B4 B5 B6 B7 B8 8 B1
§ This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the DB, DW, JT, NT, PW, and W packages.
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54ABT2952A, SN74ABT2952A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SCBS203D AUGUST 1992 REVISED JANUARY 1998
logic diagram (positive logic)
CLKENAB 11
CLKAB
10
OEAB
9
CLKENBA
13
CLKBA
14
OEBA
15 C1
A1
16
1D
8
B1
C1 1D
To Seven Other Channels Pin numbers shown are for the DB, DW, JT, NT, PW, and W packages.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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