74ACT16864 Datasheet, PDF (1/6 Pages) Texas Instruments – 18-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

54ACT16864, 74ACT16864
18ĆBIT BUS TRANSCEIVERS
WITH 3ĆSTATE OUTPUTS
SCAS244A − JUNE 1992 − REVISED APRIL 1996
D Members of the Texas Instruments
Widebus  Family
D Inputs Are TTL-Voltage Compatible
D 3-State Outputs Drive Bus Lines Directly
D Flow-Through Architecture Optimizes
PCB Layout
D Distributed V_CC and GND Pin Configuration
Minimizes High-Speed Switching Noise
D EPIC (Enhanced-Performance Implanted
CMOS) 1-µm Process
D 500-mA Typical Latch-Up Immunity at
125°C
D Package Options Include Plastic 300-mil
Shrink Small-Outline (DL) Packages Using
25-mil Center-to-Center Pin Spacings and
380-mil Fine-Pitch Ceramic Flat (WD)
Packages Using 25-mil Center-to-Center
Spacings
description
The ’ACT16864 are 18-bit inverting transceivers
designed for asynchronous communication
between data buses. The control-function
implementation minimizes external timing
requirements.
The ’ACT16864 can be used as two 9-bit
transceivers or one 18-bit transceiver. They allow
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 output-enable (OEAB or OEBA)
inputs.
54ACT16864 . . . DW PACKAGE
74ACT16864 . . . DL PACKAGE
(TOP VIEW)
1OEAB 1
1B1 2
1B2 3
GND 4
1B3 5
1B4 6
V_CC 7
1B5 8
1B6 9
1B7 10
GND 11
1B8 12
1B9 13
GND 14
GND 15
2B1 16
2B2 17
GND 18
2B3 19
2B4 20
2B5 21
V_CC 22
2B6 23
2B7 24
GND 25
2B8 26
2B9 27
2OEAB 28
56 1OEBA
55 1A1
54 1A2
53 GND
52 1A3
51 1A4
50 V_CC
49 1A5
48 1A6
47 1A7
46 GND
45 1A8
44 1A9
43 GND
42 GND
41 2A1
40 2A2
39 GND
38 2A3
37 2A4
36 2A5
35 V_CC
34 2A6
33 2A7
32 GND
31 2A8
30 2A9
29 2OEBA
The 74ACT16864 is packaged in TI’s shrink small-outline package, which provides twice the I/O pin count and
functionality of standard small-outline packages in the same printed-circuit-board area.
The 54ACT16864 is characterized for operation over the full military temperature range of −55°C to 125°C. The
74ACT16864 is characterized for operation from −40°C to 85°C.
FUNCTION TABLE
(each 9-bit section)
INPUTS
OEAB OEBA
OPERATION
H
L
B data to A bus
L
H
A data to B bus
H
H
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.
EPIC and WIdebus are trademarks of Texas Instruments Incorporated.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
Copyright  1996, Texas Instruments Incorporated
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