74ACT16861 Datasheet, PDF (1/7 Pages) Texas Instruments – 20-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

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 Shrink Plastic
Small-Outline 300-mil (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
Pin Spacings
description
The ’ACT16861 are noninverting 20-bit
transceivers designed for asynchronous
communication between data buses. The
control-function implementation minimizes
external timing requirements.
The ’ACT16861 can be used as two 10-bit
transceivers or one 20-bit transceiver. They allow
data transmission from the A bus to the B bus or
from the B bus to the A bus, depending upon the
logic level at the output-enable (OEAB or OEBA)
inputs. The output-enable inputs can be used to
disable the device so that the buses are effectively
isolated.
54ACT16861, 74ACT16861
20-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS197B – JUNE 1990 – REVISED NOVEMBER 1996
54ACT16861 . . . WD PACKAGE
74ACT16861 . . . 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
1B10 ¹⁴
2B1 ¹⁵
2B2 ¹⁶
2B3 ¹⁷
GND ¹⁸
2B4 ¹⁹
2B5 ²⁰
2B6 ²¹
V_CC ²²
2B7 ²³
2B8 ²⁴
GND ²⁵
2B9 ²⁶
2B10 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 _1A10
42 _2A1
41 _2A2
40 _2A3
39 _GND
38 _2A4
37 _2A5
36 _2A6
35 _VCC
34 _2A7
33 _2A8
32 _GND
31 _2A9
30 _2A10
29 _2OEBA
The 74ACT16861 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 54ACT16861 is characterized for operation over the full military temperature range of –55°C to 125°C. The
74ACT16861 is characterized for operation from –40°C to 85°C.
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.
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Copyright © 1996, Texas Instruments Incorporated
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