Texas Instruments 74ACT16863DLR, 74ACT16863DL Datasheet
OPERATION
54ACT16863, 74ACT16863
18-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS162B – JUNE 1990 – REVISED NOVEMBER 1996
D
Members of the Texas Instruments
Widebus
D
Inputs Are TTL-Voltage Compatible
D
3-State Outputs Drive Bus Lines Directly
D
Flow-Through Architecture Optimizes
Family
PCB Layout
D
Distributed VCC 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
Pin Spacings
description
The ’ACT16863 are 18-bit noninverting
transceivers designed for asynchronous
communication between data buses. The
control-function implementation minimizes
external timing requirements.
The ’ACT16863 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
inputs.
or OEBA)
54ACT16863 . . . WD PACKAGE
74ACT16863 . . . DL PACKAGE
1OEAB
2OEAB
1B1
1B2
GND
1B3
1B4
V
CC
1B5
1B6
1B7
GND
1B8
1B9
GND
GND
2B1
2B2
GND
2B3
2B4
2B5
V
CC
2B6
2B7
GND
2B8
2B9
(TOP VIEW)
1
56
2
55
3
54
4
53
5
52
6
51
7
50
8
49
9
48
10
47
11
46
12
45
13
44
14
43
15
42
16
41
17
40
18
39
19
38
20
37
21
36
22
35
23
34
24
33
25
32
26
31
27
30
28
29
1OEBA
1A1
1A2
GND
1A3
1A4
V
CC
1A5
1A6
1A7
GND
1A8
1A9
GND
GND
2A1
2A2
GND
2A3
2A4
2A5
V
CC
2A6
2A7
GND
2A8
2A9
2OEBA
The 74ACT16863 is packaged in TI’s shrink small-outline package (DL), which provides twice the I/O pin count
and functionality of standard small-outline packages in the same printed-circuit-board area.
The 54ACT16863 is characterized for operation over the full military temperature range of –55°C to 125°C. The
74ACT16863 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each 9-bit section)
INPUTS
OEAB OEBA
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
Copyright 1996, Texas Instruments Incorporated
1
54ACT16863, 74ACT16863
g
18-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS162B – JUNE 1990 – REVISED NOVEMBER 1996
logic symbol
†
1OEBA
1OEAB
2OEBA
2OEAB
1A1
1A2
1A3
1A4
1A5
1A6
1A7
1A8
1A9
2A1
2A2
2A3
2A4
2A5
2A6
2A7
2A8
2A9
56
1
29
28
55
54
52
51
49
48
47
45
44
41
40
38
37
36
34
33
31
30
EN1
EN2
EN3
EN4
11
31
1 2
14
10
12
13
16
17
19
20
21
23
24
26
27
2
1B1
3
1B2
5
1B3
6
1B4
8
1B5
9
1B6
1B7
1B8
1B9
2B1
2B2
2B3
2B4
2B5
2B6
2B7
2B8
2B9
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
1A1
56
1
To Eight Other Channels
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
2OEBA
2OEAB
255
1B1
1OEBA
1OEAB
2
2A1
29
28
ht Other Channels
To Ei
1641
2B1
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