74AC16245DLR Datasheet, PDF (1/9 Pages) Texas Instruments – 16-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

54AC16245, 74AC16245
16-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS235A – MARCH 1990 – REVISED APRIL 1996
D Members of the Texas Instruments
Widebust Family
D 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
D Flow-Through Architecture Optimizes PCB
Layout
D Distributed V_CC and GND Configuration
Minimizes High-Speed Switching Noise
D EPIC t (Enhanced-Performance Implanted
CMOS) 1-mm Process
D 500-mA Typical Latch-Up Immunity at 125°C
D Package Options Include Plastic Thin
Shrink Small-Outline (DGG) Package,
300-mil Shrink Small-Outline (DL) Package
Using 25-mil Center-to-Center Pin Spacings
and 380-mil Fine-Pitch Ceramic Flat (WD)
Package Using 25-mil Center-to-Center Pin
Spacings
description
The ’AC16245 are 16-bit bus transceivers
organized as dual-octal noninverting 3-state
transceivers designed for asynchronous two-way
communication between data buses. The control
function implementation minimizes external tim-
ing requirements
These devices 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 direction
control (DIR) input. The output-enable input (OE)
can be used to disable the devices so that the
buses are effectively isolated.
54AC16245 . . . WD PACKAGE
74AC16245 . . . 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 _VCC
30 _2A5
29 _2A6
28 _GND
27 _2A7
26 _2A8
25 _2OE
The 74AC16245 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 54AC16245 is characterized for operation over the full military temperature range of –55°C to 125°C. The
74AC16245 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
CONTROL
INPUTS
OE DIR
OPERATION
L
L
B data to A bus
L
H
A data to 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.
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
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