SN54ABT2952A_07 Datasheet, PDF (1/19 Pages) Texas Instruments – OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

SN54ABT2952A, SN74ABT2952A
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3-STATE OUTPUTS
SCBS203D – AUGUST 1992 – REVISED JANUARY 1998
D State-of-the-Art EPIC-ΙΙB™ BiCMOS Design
Significantly Reduces Power Dissipation
D Two 8-Bit Back-to-Back Registers Store
Data Flowing in Both Directions
D Noninverting Outputs
D Typical V_OLP (Output Ground Bounce) < 1 V
at V_CC = 5 V, T_A = 25°C
D Latch-Up Performance Exceeds 500 mA Per
JESD 17
D ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D 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 1
B7 2
B6 3
B5 4
B4 5
B3 6
B2 7
B1 8
OEAB 9
CLKAB 10
CLKENAB 11
GND 12
24 V_CC
23 A8
22 A7
21 A6
20 A5
19 A4
18 A3
17 A2
16 A1
15 OEBA
14 CLKBA
13 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 V_CC
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
4 3 2 1 28 27 26
5
25 ^A6
6
24 ^A5
7
23 ^A4
8
22 ^NC
9
21 ^A3
10
20 ^A2
11
19 ^A1
12 13 14 15 16 17 18
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.
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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