SN54ABT16640_08 Datasheet, PDF (1/13 Pages) Texas Instruments – 16-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

SN54ABT16640, SN74ABT16640
16-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS107C – APRIL 1992 – REVISED JANUARY 1997
D Members of the Texas Instruments
Widebus ™ Family
D State-of-the-Art EPIC-ΙΙB™ BiCMOS Design
Significantly Reduces Power Dissipation
D Latch-Up Performance Exceeds 500 mA Per
JEDEC Standard JESD-17
D Typical V_OLP (Output Ground Bounce) < 1 V
at V_CC = 5 V, T_A = 25°C
D Distributed V_CC and GND Pin Configuration
Minimizes High-Speed Switching Noise
D Flow-Through Architecture Optimizes PCB
Layout
D High-Drive Outputs (–32-mA I_OH,
64-mA I_OL )
D Package Options Include Plastic 300-mil
Shrink Small-Outline (DL) and Thin Shrink
Small-Outline (DGG) Packages, and 380-mil
Fine-Pitch Ceramic Flat (WD) Package
Using 25-mil Center-to-Center Spacings
description
The ’ABT16640 are inverting 16-bit transceivers
designed for asynchronous communication
between data buses.
These devices can be used as two 8-bit
transceivers or one 16-bit transceiver. It allows
data transmission from the A bus to the B bus or
from the B bus to the A bus, depending on the logic
level at the direction-control (1DIR and 2DIR)
inputs. The output-enable (1OE and 2OE) inputs
can be used to disable the device so that the
buses are effectively isolated.
SN54ABT16640 . . . WD PACKAGE
SN74ABT16640 . . . DGG OR DL PACKAGE
(TOP VIEW)
1DIR 1
1B1 2
1B2 3
GND 4
1B3 5
1B4 6
V_CC 7
1B5 8
1B6 9
GND 10
1B7 11
1B8 12
2B1 13
2B2 14
GND 15
2B3 16
2B4 17
V_CC 18
2B5 19
2B6 20
GND 21
2B7 22
2B8 23
2DIR 24
48 1OE
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
42 V_CC
41 1A5
40 1A6
39 GND
38 1A7
37 1A8
36 2A1
35 2A2
34 GND
33 2A3
32 2A4
31 V_CC
30 2A5
29 2A6
28 GND
27 2A7
26 2A8
25 2OE
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 SN54ABT16640 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74ABT16640 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each 8-bit section)
INPUTS
OE DIR
OPERATION
L
L
B data to A bus
L
H A data to B bus
H
X
Isolation
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.
Widebus and EPIC-ΙΙB are trademarks 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 © 1997, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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