SNJ54AS873A [TI]
DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS; 双4位D类锁存器具有三态输出
| 型号： | SNJ54AS873A |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS |
| 文件： | 总9页 (文件大小：138K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54ALS873B, SN54AS873A, SN74ALS873B, SN74AS873A
DUAL 4-BIT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SDAS036D – APRIL 1982 – REVISED AUGUST 1995
SN54ALS873B, SN54AS873A . . . JT PACKAGE
SN74ALS873B, SN74AS873A . . . DW OR NT PACKAGE
(TOP VIEW)
• 3-State Buffer-Type Outputs Drive Bus
Lines Directly
• Bus-Structured Pinout
1CLR
1OE
1D1
1D2
1D3
1D4
2D1
2D2
2D3
V
CC
1
2
3
4
5
6
7
8
9
24
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Plastic (NT) and
Ceramic (JT) DIPs
23 1LE
22 1Q1
21 1Q2
20 1Q3
19 1Q4
18 2Q1
17 2Q2
16 2Q3
15 2Q4
14 2LE
13 2CLR
description
These dual 4-bit D-type latches feature 3-state
outputs designed specifically for bus driving.
These devices are particularly suitable for
implementing buffer registers, I/O ports,
bidirectional bus drivers, and working registers.
2D4 10
2OE 11
GND 12
The dual 4-bit latches are transparent D-type
latches. While the latch-enable (LE) input is high,
the Q outputs follow the data (D) inputs in true
form, according to the function table. When LE is
low, the outputs are latched. When the clear (CLR)
SN54ALS873B, SN54AS873A . . . FK PACKAGE
(TOP VIEW)
input goes low, the
Q
outputs go low
independently of LE. The outputs are in the
high-impedance state when the output-enable
(OE) input is at a high logic level.
4
3
2
1 28 27 26
25
1D2
1D3
1D4
NC
2D1
2D2
2D3
1Q2
1Q3
1Q4
NC
2Q1
2Q2
2Q3
5
6
7
8
9
24
23
22
21
20
19
The SN54ALS873B and SN54AS873A are
characterized for operation over the full military
temperature range of –55°C to 125°C. The
SN74ALS873B
and
SN74AS873A
are
10
11
characterized for operation from 0°C to 70°C.
12 13 14 15 16 17 18
NC – No internal connection
FUNCTION TABLE
(each latch)
INPUTS
OUTPUT
Q
OE
L
LE
X
D
X
H
L
CLR
L
L
H
L
L
H
H
H
L
L
H
L
H
X
X
Q
0
H
X
X
Z
Copyright 1995, Texas Instruments Incorporated
PRODUCTION DATA information is 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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS873B, SN54AS873A, SN74ALS873B, SN74AS873A
DUAL 4-BIT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SDAS036D – APRIL 1982 – REVISED AUGUST 1995
†
logic symbol
logic diagram (each quad latch, positive logic)
2
1OE
OE
EN
C1
C
23
1LE
1
1CLR
LE
3
22
21
20
19
1D1
4
1D
1Q1
1Q2
1Q3
1Q4
CLR
1D2
5
R
1D3
6
C1
1D
Q1
Q2
Q3
D1
D2
D3
1D4
R
11
EN
C1
C
C1
1D
2OE
14
2LE
13
2CLR
R
7
2D1
8
18
17
16
15
C1
1D
1D
2Q1
2Q2
2Q3
2Q4
2D2
9
2D3
10
R
2D4
C1
1D
Q4
D4
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
Pin numbers shown are for the DW, JT, and NT packages.
‡
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
CC
Input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
I
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating free-air temperature range, T : SN54ALS873B . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
A
SN74ALS873B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
‡
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.
recommended operating conditions
SN54ALS873B
MIN NOM MAX
SN74ALS873B
MIN NOM MAX
UNIT
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Operating free-air temperature
IH
0.7
–1
0.8
–2.6
24
V
IL
I
I
mA
mA
°C
OH
OL
12
T
A
–55
125
0
70
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS873B, SN54AS873A, SN74ALS873B, SN74AS873A
DUAL 4-BIT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SDAS036D – APRIL 1982 – REVISED AUGUST 1995
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54ALS873B
SN74ALS873B
PARAMETER
TEST CONDITIONS
UNIT
†
†
MIN TYP
MAX
MIN TYP
MAX
V
V
V
= 4.5 V,
I = –18 mA
–1.2
–1.2
V
IK
CC
I
= 4.5 V to 5.5 V,
I
I
I
I
I
= –0.4 mA
= –1 mA
= –2.6 mA
= 12 mA
= 24 mA
= 2.7 V
V
– 2
V
CC
– 2
CC
OH
OH
OH
OL
OL
CC
2.4
V
OH
3.3
V
V
= 4.5 V
= 4.5 V
CC
CC
2.4
3.2
0.25
0.35
0.25
0.4
0.4
0.5
V
OL
V
V
I
I
I
I
I
I
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
V
20
–20
0.1
20
µA
µA
OZH
OZL
I
O
O
V
= 0.4 V
–20
0.1
V = 7 V
I
mA
µA
V = 2.7 V
I
20
20
IH
V = 0.4 V
I
– 0.2
–112
21
– 0.2
–112
21
mA
mA
IL
‡
V
O
= 2.25 V
–20
–30
O
Outputs high
Outputs low
11
16
20
11
16
20
I
V
CC
= 5.5 V
29
29
mA
CC
Outputs disabled
31
31
†
‡
All typical values are at V
= 5 V, T = 25°C.
A
CC
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
.
OS
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 1)
SN54ALS873B SN74ALS873B
UNIT
MIN
15
10
10
7
MAX
MIN
15
10
10
7
MAX
CLR low
LE high
t
Pulse duration
ns
w
t
t
ns
ns
Setup time, data before LE↓
Hold time, data after LE↓
su
h
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS873B, SN54AS873A, SN74ALS873B, SN74AS873A
DUAL 4-BIT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SDAS036D – APRIL 1982 – REVISED AUGUST 1995
switching characteristics (see Figure 1)
V
C
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
R1 = 500 Ω,
R2 = 500 Ω,
T
A
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
†
= MIN to MAX
SN54ALS873B SN74ALS873B
MIN
2
MAX
23
17
31
26
27
24
23
12
30
MIN
2
MAX
14
14
22
21
20
18
18
10
15
t
t
t
t
t
t
t
t
t
PLH
PHL
PLH
PHL
PHL
PZH
PZL
PHZ
PLZ
D
Q
ns
2
2
8
8
LE
CLR
OE
Q
Q
Q
ns
ns
ns
8
8
6
6
4
4
4
4
2
2
OE
Q
ns
2
2
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
CC
Input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
I
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating free-air temperature range, T : SN54AS873A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
A
SN74AS873A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
‡
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.
recommended operating conditions
SN54AS873A
MIN NOM MAX
SN74AS873A
MIN NOM MAX
UNIT
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Operating free-air temperature
IH
0.8
–12
32
0.8
–15
48
V
IL
I
I
mA
mA
°C
OH
OL
T
A
–55
125
0
70
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS873B, SN54AS873A, SN74ALS873B, SN74AS873A
DUAL 4-BIT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SDAS036D – APRIL 1982 – REVISED AUGUST 1995
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54AS873A
SN74AS873A
PARAMETER
TEST CONDITIONS
UNIT
†
†
MIN TYP
MAX
MIN TYP
MAX
V
V
V
= 4.5 V,
I = –18 mA
–1.2
–1.2
V
IK
CC
I
= 4.5 V to 5.5 V,
I
I
I
I
I
= –2 mA
= –12 mA
= –15 mA
= 32 mA
= 48 mA
= 2.7 V
V
– 2
V
CC
– 2
CC
OH
OH
OH
OL
OL
CC
2.4
V
OH
3.2
V
V
= 4.5 V
= 4.5 V
CC
CC
2.4
3.3
0.25
0.5
V
OL
V
V
0.35
0.5
50
I
I
I
I
I
I
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
V
50
–50
0.1
µA
µA
OZH
OZL
I
O
O
V
= 0.4 V
–50
0.1
V = 7 V
I
mA
µA
V = 2.7 V
I
20
20
IH
V = 0.4 V
I
– 0.5
–112
110
– 0.5
–112
110
109
129
mA
mA
IL
‡
V
O
= 2.25 V
–30
–30
O
Outputs high
Outputs low
68
67
80
68
67
80
I
V
CC
= 5.5 V
109
129
mA
CC
Outputs disabled
†
‡
All typical values are at V
= 5 V, T = 25°C.
A
CC
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
.
OS
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 1)
SN54AS873A SN74AS873A
UNIT
MIN
MAX
MIN
MAX
CLR low
LE high
5
5
t *
w
Pulse duration
ns
6
5
t
*
2
2
ns
ns
Setup time, data before LE↓
Hold time, data after LE↓
su
t *
4.5
4.5
h
* On products compliant to MIL-STD-883, Class B, this parameter is based on characterization data but is not production tested.
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS873B, SN54AS873A, SN74ALS873B, SN74AS873A
DUAL 4-BIT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SDAS036D – APRIL 1982 – REVISED AUGUST 1995
switching characteristics (see Figure 1)
V
C
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
R1 = 500 Ω,
R2 = 500 Ω,
T
A
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
†
= MIN to MAX
SN54AS873A SN74AS873A
MIN
3
MAX
12.5
8.5
15.5
9
MIN
3
MAX
9.5
7.5
13
t
t
t
t
t
t
t
t
t
PLH
PHL
PLH
PHL
PHL
PZH
PZL
PHZ
PLZ
D
Q
ns
3
3
6
6
LE
CLR
OE
Q
Q
Q
ns
ns
ns
4
4
7.5
9
3
10.5
8
3
2
2
6.5
10.5
7.5
7.5
4
11
4
2
8
2
OE
Q
ns
2
8.5
2
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS873B, SN54AS873A, SN74ALS873B, SN74AS873A
DUAL 4-BIT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SDAS036D – APRIL 1982 – REVISED AUGUST 1995
PARAMETER MEASUREMENT INFORMATION
7 V
SWITCH POSITION TABLE
TEST
S1
Open
t
Open
Open
Open
Closed
Open
Closed
S1
PLH
t
PHL
PZH
R1 = 500 Ω
t
From Output
Under Test
t
PZL
Test Point
R2 = 500 Ω
t
PHZ
C
= 50 pF
L
t
PLZ
(see Note A)
LOAD CIRCUIT FOR 3-STATE OUTPUTS
3.5 V
0.3 V
1.3 V
1.3 V
High-Level
Pulse
1.3 V
t
w
3.5 V
Timing
Input
3.5 V
0.3 V
1.3 V
Low-Level
Pulse
1.3 V
0.3 V
3.5 V
0.3 V
t
h
t
su
VOLTAGE WAVEFORMS
PULSE DURATION
Data
Input
1.3 V
1.3 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3.5 V
Output
Control
1.3 V
1.3 V
0.3 V
3.5 V
3.5 V
t
1.3 V
1.3 V
PZL
Input
t
PLZ
0.3 V
PHL
t
t
PLH
Waveform 1
S1 Closed
(see Note B)
1.3 V
V
OH
In-Phase
Output
1.3 V
1.3 V
V
OL
V
OL
0.3 V
t
PHZ
t
t
PZH
PLH
t
PHL
V
OH
V
Waveform 2
S1 Open
(see Note B)
OH
OL
Out-of-Phase
Output
1.3 V
1.3 V
1.3 V
0.3 V
0 V
V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
NOTES: A.
C
L
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, Z = 50 Ω, t ≤ 2 ns, t ≤ 2 ns.
O
r
f
D. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
28-Feb-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
LCCC
CFP
Drawing
84032013A
8403201KA
ACTIVE
OBSOLETE
ACTIVE
FK
28
24
24
24
24
1
None
None
None
None
Call TI
Call TI
Call TI
Call TI
Level-NC-NC-NC
Call TI
W
8403201LA
CDIP
CDIP
SOIC
JT
1
1
Level-NC-NC-NC
Level-NC-NC-NC
SN54ALS873BJT
SN74ALS873BDW
ACTIVE
JT
ACTIVE
DW
25
Pb-Free
(RoHS)
CU NIPDAU Level-2-250C-1 YEAR/
Level-1-235C-UNLIM
SN74ALS873BDWR
SN74ALS873BNT
ACTIVE
ACTIVE
SOIC
PDIP
DW
NT
24
24
2000
15
Pb-Free
(RoHS)
CU NIPDAU Level-2-250C-1 YEAR/
Level-1-235C-UNLIM
Pb-Free
(RoHS)
CU NIPDAU Level-NC-NC-NC
SN74ALS873BNT3
SN74AS873ADW
SN74AS873ADWR
SN74AS873ANT
SNJ54ALS873BFK
SNJ54ALS873BJT
SNJ54AS873AFK
SNJ54AS873AJT
SNJ54AS873AW
OBSOLETE
OBSOLETE
OBSOLETE
OBSOLETE
ACTIVE
PDIP
SOIC
SOIC
PDIP
LCCC
CDIP
LCCC
CDIP
CFP
NT
DW
DW
NT
FK
JT
24
24
24
24
28
24
28
24
24
None
None
None
None
None
None
None
None
None
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
1
1
Level-NC-NC-NC
Level-NC-NC-NC
Call TI
ACTIVE
OBSOLETE
OBSOLETE
OBSOLETE
FK
JT
Call TI
W
Call TI
(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 - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional
product content details.
None: Not yet available Lead (Pb-Free).
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" and in addition, uses package materials that do not contain halogens,
including bromine (Br) or antimony (Sb) above 0.1% of total product weight.
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder
temperature.
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
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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.
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Following are URLs where you can obtain information on other Texas Instruments products and application
solutions:
Products
Applications
Audio
Amplifiers
amplifier.ti.com
www.ti.com/audio
Data Converters
dataconverter.ti.com
Automotive
www.ti.com/automotive
DSP
dsp.ti.com
Broadband
Digital Control
Military
www.ti.com/broadband
www.ti.com/digitalcontrol
www.ti.com/military
Interface
Logic
interface.ti.com
logic.ti.com
Power Mgmt
Microcontrollers
power.ti.com
Optical Networking
Security
www.ti.com/opticalnetwork
www.ti.com/security
www.ti.com/telephony
www.ti.com/video
microcontroller.ti.com
Telephony
Video & Imaging
Wireless
www.ti.com/wireless
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