TEXAS INSTRUMENTS SN54ABT16541 Technical data
查询74ABT16952DGGRE4供应商
SN54ABT16952, SN74ABT16952
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS082C – FEBRUARY 1991 – REVISED JANUARY 1997
D
Members of the Texas Instruments
Widebus
D
State-of-the-Art
Family
EPIC-ΙΙB
BiCMOS Design
Significantly Reduces Power Dissipation
D
Latch-Up Performance Exceeds 500 mA Per
JEDEC Standard JESD-17
D
T ypical V
(Output Ground Bounce) < 1 V
OLP
at VCC = 5 V, TA = 25°C
D
Distributed VCC and GND Pin Configuration
Minimizes High-Speed Switching Noise
D
Flow-Through Architecture Optimizes PCB
Layout
D
High-Drive Outputs (–32-mA IOH, 64-mA IOL)
D
Package Options Include Plastic 300-mil
Shrink Small-Outline (DL) and Thin Shrink
Small-Outline (DGG) Packages and 380-mil
Fine-Pitch Ceramic Flat (WD) Package
Using 25-mil Center-to-Center Spacings
description
The ’ABT16952 are 16-bit registered transceivers
that contain two sets of D-type flip-flops for
temporary storage of data flowing in either
direction. The ’ABT16952 can be used as two 8-bit
transceivers or one 16-bit transceiver. Data on the
A or B bus is stored in the registers on the
low-to-high transition of the clock (CLKAB or
CLKBA) input provided that the clock-enable
(CLKENAB
output-enable (OEAB or OEBA) input low
accesses the data on either port.
or CLKENBA) input is low. Taking the
SN54ABT16952 ...WD PACKAGE
SN74ABT16952 . . . DGG OR DL PACKAGE
1OEAB
1CLKAB
1CLKENAB
2CLKENAB
2CLKAB
2OEAB
GND
1A1
1A2
V
CC
1A3
1A4
1A5
GND
1A6
1A7
1A8
2A1
2A2
2A3
GND
2A4
2A5
2A6
V
CC
2A7
2A8
GND
(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
1CLKBA
1CLKENBA
GND
1B1
1B2
V
CC
1B3
1B4
1B5
GND
1B6
1B7
1B8
2B1
2B2
2B3
GND
2B4
2B5
2B6
V
CC
2B7
2B8
GND
2CLKENBA
2CLKBA
2OEBA
T o ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
The SN54ABT16952 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74ABT16952 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.
Widebus and EPIC-ΙΙB 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 1997, Texas Instruments Incorporated
1
SN54ABT16952, SN74ABT16952
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS082C – FEBRUARY 1991 – REVISED JANUARY 1997
FUNCTION TABLE
INPUTS
CLKENAB CLKAB OEAB
H X L X B
X LLXB
L ↑ LL L
L ↑ LH H
X X H X Z
†
A-to-B data flow is shown; B-to-A data flow is similar, but
uses CLKENBA
‡
Level of B before the indicated steady-state input
conditions were established
, CLKBA, and OEBA.
†
OUTPUT
A
B
0
0
‡
‡
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ABT16952, SN74ABT16952
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS082C – FEBRUARY 1991 – REVISED JANUARY 1997
logic symbol
†
1A1
1A2
1A3
1A4
1A5
1A6
1A7
1A8
2A1
2A2
2A3
2A4
2A5
2A6
2A7
2A8
56
54
55
1
3
2
29
31
30
28
26
27
5
6
8
9
10
12
13
14
15
16
17
19
20
21
23
24
EN3
G1
1C5
EN4
G2
EN9
G7
EN10
G8
3
6D
9
12D
11D
10
5D
4
52
51
49
48
47
45
44
43
42
41
40
38
37
36
34
33
1B1
1B2
1B3
1B4
1B5
1B6
1B7
1B8
2B1
2B2
2B3
2B4
2B5
2B6
2B7
2B8
1OEBA
1CLKENBA
1CLKBA
1OEAB
1CLKENAB
1CLKAB 2C6
2OEBA
2CLKENBA
2CLKBA 7C11
2OEAB
2CLKENAB
2CLKAB 8C12
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
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