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Texas Instruments (TI) Electronic Components Datasheet

54ACT16544 Datasheet

16-BIT REGISTERED TRANSCEIVERS

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54ACT16544, 74ACT16544
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS161A – AUGUST 1990 – REVISED APRIL 1996
D Members of the Texas Instruments
WidebusFamily
D Inputs Are TTL-Voltage Compatible
D 3-State Inverted Outputs
D Flow-Through Architecture Optimizes
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 ’ACT16544 are 16-bit registered transceivers
that contain two sets of D-type latches for
temporary storage of data flowing in either
direction. They can be used as two 8-bit
transceivers or one 16-bit transceiver. Separate
latch-enable (LEAB or LEBA) and output-enable
(OEAB or OEBA) inputs are provided for each
register to permit independent control in either
direction of data flow.
The A-to-B enable (CEAB) input must be low to
enter data from A or to output data to B. Having
CEAB low and LEAB low makes the A-to-B
latches transparent; a subsequent low-to-high
transition at LEAB puts the A latches in the
storage mode. Data flow from B to A is similar, but
requires using the CEBA, LEBA, and OEBA
inputs.
54ACT16544 . . . WD PACKAGE
74ACT16544 . . . DL PACKAGE
(TOP VIEW)
1OEAB
1LEAB
1CEAB
GND
1A1
1A2
VCC
1A3
1A4
1A5
GND
1A6
1A7
1A8
2A1
2A2
2A3
GND
2A4
2A5
2A6
VCC
2A7
2A8
GND
2CEAB
2LEAB
2OEAB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56 1OEBA
55 1LEBA
54 1CEBA
53 GND
52 1B1
51 1B2
50 VCC
49 1B3
48 1B4
47 1B5
46 GND
45 1B6
44 1B7
43 1B8
42 2B1
41 2B2
40 2B3
39 GND
38 2B4
37 2B5
36 2B6
35 VCC
34 2B7
33 2B8
32 GND
31 2CEBA
30 2LEBA
29 2OEBA
The 74ACT16544 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 54ACT16544 is characterized for operation over the full military temperature range of –55°C to 125°C. The
74ACT16544 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.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1996, Texas Instruments Incorporated
1


Texas Instruments (TI) Electronic Components Datasheet

54ACT16544 Datasheet

16-BIT REGISTERED TRANSCEIVERS

No Preview Available !

54ACT16544, 74ACT16544
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS161A – AUGUST 1990 – REVISED APRIL 1996
FUNCTION TABLE†
INPUTS
CEAB LEAB OEAB
A
OUTPUT
B
HXXX
Z
L XHX
LHLX
LLLL
Z
B0‡
H
L L LH
L
A-to-B data flow is shown: B-to-A flow control is the
same except that it uses CEBA, LEBA, and OEBA.
Output level before the indicated steady-state
input conditions were established
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number 54ACT16544
Description 16-BIT REGISTERED TRANSCEIVERS
Maker Texas
Total Page 9 Pages
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