查询54ACT16861供应商
54ACT16861, 74ACT16861
20-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS197B – 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 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
inputs. The output-enable inputs can be used to
disable the device so that the buses are effectively
isolated.
or OEBA)
54ACT16861 . . . WD PACKAGE
74ACT16861 . . . DL PACKAGE
1OEAB
2OEAB
1B1
1B2
GND
1B3
1B4
V
CC
1B5
1B6
1B7
GND
1B8
1B9
1B10
2B1
2B2
2B3
GND
2B4
2B5
2B6
V
CC
2B7
2B8
GND
2B9
2B10
(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
1A10
2A1
2A2
2A3
GND
2A4
2A5
2A6
V
CC
2A7
2A8
GND
2A9
2A10
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.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 1996, Texas Instruments Incorporated
1
54ACT16861, 74ACT16861
OPERATION
20-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS197B – JUNE 1990 – REVISED NOVEMBER 1996
FUNCTION TABLE
(each 10-bit section)
INPUTS
OEAB
OEBA
L L
L H A to B
H L B to A
H H Isolation
Latch A and B
(A = B)
logic symbol
†
1OEBA
1OEAB
2OEBA
2OEAB
1A1
1A2
1A3
1A4
1A5
1A6
1A7
1A8
1A9
1A10
2A1
2A2
2A3
2A4
2A5
2A6
2A7
2A8
2A9
2A10
56
1
29
28
55
54
52
51
49
48
47
45
44
43
42
41
40
38
37
36
34
33
31
30
EN1
EN2
EN3
EN4
11
31
1 2
14
10
12
13
14
15
16
17
19
20
21
23
24
26
27
2
1B1
3
1B2
5
1B3
6
1B4
8
1B5
9
1B6
1B7
1B8
1B9
1B10
2B1
2B2
2B3
2B4
2B5
2B6
2B7
2B8
2B9
2B10
†
2
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
UNIT
logic diagram (positive logic)
54ACT16861, 74ACT16861
20-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS197B – JUNE 1990 – REVISED NOVEMBER 1996
1OEBA
1OEAB
1A1
56
1
To Nine Other Channels
2OEBA
2OEAB
255
1B1
2A1
29
28
To Nine Other Channels
1542
2B1
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI (see Note 1) –0.5 V to VCC + 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, VO (see Note 1) –0.5 V to VCC + 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK (VI < 0 or VI > VCC) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, IOK (VO < 0 or VO > VCC) ±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current, I
Continuous current through VCC or GND ±500 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum power package dissipation at TA = 55°C (in still air) (see Note 2): DL package 1.4 W. . . . . . . . . . .
Storage temperature range, T
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The maximum package power dissipation is calculated using a junction temperature of 150°C and a board trace length of 750 mils.
(VO = 0 to VCC) ±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
†
recommended operating conditions (see Note 3)
54ACT16861 74ACT16861
MIN NOM MAX MIN NOM MAX
V
V
V
V
V
I
OH
I
OL
∆t/∆v Input transition rise or fall rate 0 10 0 10 ns/V
T
NOTE 3: Unused inputs must be held high or low to prevent them from floating.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
Supply voltage 4.5 5 5.5 4.5 5 5.5 V
CC
High-level input voltage 2 2 V
IH
Low-level input voltage 0.8 0.8 V
IL
Input voltage 0 V
I
Output voltage 0 V
O
High-level output current –24 –24 mA
Low-level output current 24 24 mA
Operating free-air temperature –55 125 –40 85 °C
A
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
CC
CC
0 V
0 V
CC
CC
V
V
3
54ACT16861, 74ACT16861
PARAMETER
TEST CONDITIONS
V
UNIT
I
A
I
mA
I
50 µA
I
24 mA
PARAMETER
UNIT
A or B
B or A
ns
OEBA
OEAB
A or B
ns
OEBA
OEAB
A or B
ns
CpdPower dissipation capacitance per transceiver
C
50 pF
f
pF
20-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS197B – JUNE 1990 – REVISED NOVEMBER 1996
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
CC
= –50 µ
OH
V
OH
V
OL
I
I
I
OZ
I
CC
∆I
C
C
†
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
‡
For I/O ports, the parameter IOZ includes the input leakage current.
§
This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or VCC.
Control inputs VI = VCC or GND 5.5 V ±0.1 ±1 ±1 µA
‡
A or B ports VO = VCC or GND 5.5 V ±0.5 ±5 ±5 µA
§
CC
Control inputs VI = VCC or GND 5 V 4.5 pF
i
A or B ports VO = VCC or GND 5 V 17 pF
io
= –24
OH
IOH = –75 mA
=
OL
=
OL
IOL = 75 mA
VI = VCC or GND, IO = 0 5.5 V 8 80 80 µA
One input at 3.4 V ,
Other inputs at VCC or GND
†
†
4.5 V 4.4 4.4 4.4
5.5 V 5.4 5.4 5.4
4.5 V 3.94 3.8 3.8
5.5 V 4.94 4.8 4.8
5.5 V 3.85 3.85
4.5 V 0.1 0.1 0.1
5.5 V 0.1 0.1 0.1
4.5 V 0.36 0.44 0.44
5.5 V 0.36 0.44 0.44
5.5 V 1.65 1.65
5.5 V 0.9 1 1 mA
TA = 25°C 54ACT16861 74ACT16861
MIN TYP MAX MIN MAX MIN MAX
V
V
switching characteristics over recommended operating free-air temperature range,
V
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
CC
TA = 25°C 54ACT16861 74ACT16861
MIN TYP MAX MIN MAX MIN MAX
3.1 6.5 9.2 3.1 10.4 3.1 10.4
2.9 7.5 10 2.9 11.1 2.9 11.1
2.4 6.6 9 2.4 10 2.4 10
3.7 8.5 11.5 3.7 12.7 3.7 12.7
4.9 7.4 9.8 4.9 10.7 4.9 10.7
4.5 6.9 9.3 4.5 10 4.5 10
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
FROM TO
(INPUT) (OUTPUT)
or
or
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER TEST CONDITIONS TYP UNIT
p
p
p
Outputs enabled
Outputs disabled
p
,
=
L
= 1 MHz
64
14
p
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
From Output
Under Test
Input
CL = 50 pF
(see Note A)
1.5 V 1.5 V
VOLTAGE WAVEFORMS
500 Ω
LOAD CIRCUIT
t
w
54ACT16861, 74ACT16861
20-BIT BUS TRANSCEIVERS
SCAS197B – JUNE 1990 – REVISED NOVEMBER 1996
PARAMETER MEASUREMENT INFORMATION
2 × V
500 Ω
S1
CC
Open
GND
Timing Input
3 V
Data Input
0 V
TEST S1
t
PLH/tPHL
t
PLZ/tPZL
t
PHZ/tPZH
t
su
1.5 V
VOLTAGE WAVEFORMS
WITH 3-STATE OUTPUTS
Open
2 × V
CC
GND
1.5 V
t
h
1.5 V
3 V
0 V
3 V
0 V
Input
t
PLH
In-Phase
Output
t
PHL
Out-of-Phase
Output
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 3 ns, tf = 3 ns.
D. The outputs are measured one at a time with one input transition per measurement.
1.5 V 1.5 V
50% V
CC
50% V
CC
VOLTAGE WAVEFORMS
Figure 1. Load Circuit and Voltage Waveforms
t
PHL
50% V
t
PLH
50% V
CC
CC
3 V
0 V
V
V
V
V
OH
OL
OH
OL
Output
Control
(low-level
enabling)
Output
Waveform 1
S1 at 2 × V
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
CC
t
PZL
t
PZH
CC
CC
1.5 V
20% V
80% V
1.5 V
t
PLZ
50% V
t
PHZ
50% V
VOLTAGE WAVEFORMS
CC
CC
3 V
0 V
[
V
V
[
V
OL
OH
0 V
CC
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
5
PACKAGE OPTION ADDENDUM
www.ti.com
24-Jun-2005
PACKAGING INFORMATION
Orderable Device Status
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
74ACT16861DL ACTIVE SSOP DL 56 20 Green (RoHS &
no Sb/Br)
74ACT16861DLR ACTIVE SSOP DL 56 1000 Green (RoHS &
no Sb/Br)
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
(2)
Lead/Ball Finish MSL Peak Temp
CU NIPDAU Level-1-260C-UNLIM
CU NIPDAU Level-1-260C-UNLIM
(3)
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 1
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
orders and should verify that such information is current and complete. All products are sold subject to TI’s terms
and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty . Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for
their products and applications using TI components. To minimize the risks associated with customer products
and applications, customers should provide adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,
copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process
in which TI products or services are used. Information published by TI regarding third-party products or services
does not constitute a license from TI to use such products or services or a warranty or endorsement thereof.
Use of such information may require a license from a third party under the patents or other intellectual property
of the third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of information in TI data books or data sheets is permissible only if reproduction is without
alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction
of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for
such altered documentation.
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that
product or service voids all express and any implied warranties for the associated TI product or service and
is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.
Following are URLs where you can obtain information on other Texas Instruments products and application
solutions:
Products Applications
Amplifiers amplifier.ti.com Audio www.ti.com/audio
Data Converters dataconverter.ti.com Automotive www.ti.com/automotive
DSP dsp.ti.com Broadband www.ti.com/broadband
Interface interface.ti.com Digital Control www.ti.com/digitalcontrol
Logic logic.ti.com Military www.ti.com/military
Power Mgmt power.ti.com Optical Networking www.ti.com/opticalnetwork
Microcontrollers microcontroller.ti.com Security www.ti.com/security
Telephony www.ti.com/telephony
Video & Imaging www.ti.com/video
Wireless www.ti.com/wireless
Mailing Address: Texas Instruments
Post Office Box 655303 Dallas, Texas 75265
Copyright 2005, Texas Instruments Incorporated
Loading...