8509601EA [TI]
具有三态输出的双路 4 选 1 数据选择器/多路复用器 | J | 16 | -55 to 125;
| 型号： | 8509601EA |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 具有三态输出的双路 4 选 1 数据选择器/多路复用器 | J | 16 | -55 to 125 逻辑集成电路 复用器 解复用器 |
| 文件： | 总7页 (文件大小：114K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54ALS253, SN74ALS253, SN74AS253A
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDAS216A – APRIL 1982 – REVISED DECEMBER 1994
SN54ALS253 . . . J PACKAGE
SN74ALS253, SN74AS253A . . . D OR N PACKAGE
(TOP VIEW)
• 3-State Versions of the ′ALS153 and
SN74AS153
• Permits Multiplexing From n Lines to
One Line
1OE
B
V
CC
2OE
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
• Performs Parallel-to-Serial Conversion
• Package Options Include Plastic
Small-Outline (D) Packages, Ceramic Chip
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) 300-mil DIPs
1C3
1C2
1C1
1C0
1Y
A
2C3
2C2
2C1
2C0
2Y
description
GND
These data selectors/multiplexers contain
inverters and drivers to supply full binary decoding
data selection to the AND-OR gates. Separate
output control inputs are provided for each of the
two 4-line sections.
SN54ALS253 . . . FK PACKAGE
(TOP VIEW)
The 3-state outputs can interface with and drive
data lines of bus-organized systems. With all but
one of the common outputs disabled (at a
high-impedance state), the low impedance of the
single enabled output drives the bus line to a high
or low logic level. Each output has its own
output-enable (OE) input. The output is disabled
when OE is high.
3
2
1
20 19
18
1C3
1C2
NC
A
4
5
6
7
8
17
16
15
14
2C3
NC
2C2
2C1
1C1
1C0
9 10 11 12 13
The SN54ALS253 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74ALS253 and SN74AS253A
are characterized for operation from 0°C to 70°C.
NC – No internal connection
FUNCTION TABLE
INPUTS
DATA
OUTPUT
Y
†
SELECT
OE
B
X
L
A
X
L
C0
X
L
C1
X
X
X
L
C2
X
X
X
X
X
L
C3
X
X
X
X
X
X
X
L
H
L
L
L
L
L
L
L
L
Z
L
L
L
H
X
X
X
X
X
X
H
L
L
H
H
L
L
H
X
X
X
X
H
L
H
H
H
H
L
H
X
X
H
L
H
H
H
H
†
Select inputs A and B are common to both sections.
Copyright 1994, 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
SN54ALS253, SN74ALS253, SN74AS253A
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDAS216A – APRIL 1982 – REVISED DECEMBER 1994
†
logic symbol
14
A
B
0
1
0
3
2
G
1
6
5
4
3
MUX
1OE
1C0
1C1
1C2
1C3
EN
0
7
9
1
1Y
2Y
2
3
15
10
11
12
13
2OE
2C0
2C1
2C2
2C3
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
logic diagram (positive logic)
1
1OE
6
1C0
5
1C1
7
1Y
Data 1
4
1C2
3
1C3
2
B
Select
14
A
10
2C0
11
2C1
9
Data 2
12
2Y
2C2
13
2C3
15
2OE
Pin numbers shown are for the D, J, and N packages.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS253, SN74ALS253, SN74AS253A
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDAS216A – APRIL 1982 – REVISED DECEMBER 1994
†
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 : SN54ALS253 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
A
SN74ALS253 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
SN54ALS253
MIN NOM MAX
SN74ALS253
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
12
OL
T
A
–55
125
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54ALS253
SN74ALS253
PARAMETER
TEST CONDITIONS
UNIT
‡
‡
MIN TYP
MAX
MIN TYP
MAX
V
V
V
= 4.5 V,
I = –18 mA
–1.5
–1.5
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
–0.1
–112
12
–0.1
–112
12
mA
mA
IL
§
V
O
= 2.25 V
–20
–30
O
Outputs high
6.5
7.5
6.5
7.5
I
V
CC
= 5.5 V
mA
CC
Outputs disabled
14
14
‡
§
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
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS253, SN74ALS253, SN74AS253A
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDAS216A – APRIL 1982 – REVISED DECEMBER 1994
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
TO
(OUTPUT)
PARAMETER
(INPUT)
UNIT
†
= MIN to MAX
SN54ALS253 SN74ALS253
MIN
5
MAX
30
MIN
5
MAX
21
t
t
t
t
t
t
t
t
PLH
PHL
PLH
PHL
PZH
PZL
PHZ
PLZ
A or B
Any Y
Any Y
Any Y
Any Y
ns
ns
ns
ns
5
27
5
21
2
15
2
10
Data
(any C)
3
18
3
14
3
20
3
14
OE
OE
2
19
4
16
2
12
2
10
2
18
2
14
†
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
Operating free-air temperature range, T : SN74AS253A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
A
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
SN74AS253A
MIN NOM MAX
UNIT
V
V
V
Supply voltage
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
–15
48
V
IL
I
I
mA
mA
°C
OH
OL
T
A
0
70
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS253, SN74ALS253, SN74AS253A
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDAS216A – APRIL 1982 – REVISED DECEMBER 1994
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN74AS253A
PARAMETER
TEST CONDITIONS
UNIT
V
†
MIN TYP
MAX
V
V
V
V
V
V
V
V
V
= 4.5 V,
I = –18 mA
I
–1.2
IK
CC
CC
CC
CC
CC
CC
= 4.5 V to 5.5 V,
= 4.5 V,
I
I
I
= –2 mA
= –15 mA
= 48 mA
= 2.7 V
V
–2
OH
OH
OL
CC
2.4
V
OH
3.2
= 4.5 V,
0.35
0.5
50
V
OL
I
= 5.5 V,
V
µA
µA
OZH
OZL
O
O
I
= 5.5 V,
V
= 0.4 V
–50
0.2
0.1
40
A, B
I
I
V
V
= 5.5 V,
= 5.5 V,
V = 7 V
I
mA
CC
All others
A, B
I
V = 2.7 V
I
µA
IH
IL
CC
All others
A, B
20
–1
I
I
V
V
= 5.5 V,
= 5.5 V,
V = 0.4 V
I
mA
mA
CC
All others
–0.5
–112
29
‡
V
O
= 2.25 V
–30
O
CC
Outputs high
Outputs low
18
20
21
I
V
CC
= 5.5 V
32
mA
CC
Outputs disabled
33
†
‡
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
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
TO
(OUTPUT)
PARAMETER
(INPUT)
UNIT
§
= MIN to MAX
SN74AS253A
MIN
3
MAX
13.5
11.5
7.5
8
t
t
t
t
t
t
t
t
PLH
PHL
PLH
PHL
PZH
PZL
PHZ
PLZ
A or B
Y
ns
ns
ns
ns
3
2.5
2.5
2
Data
(any C)
Y
12.5
11.5
6
Any Y
Any Y
OE
OE
2.5
1
1
7
§
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS253, SN74ALS253, SN74AS253A
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDAS216A – APRIL 1982 – REVISED DECEMBER 1994
PARAMETER MEASUREMENT INFORMATION
SERIES 54ALS/74ALS AND 54AS/74AS DEVICES
7 V
R
= R1 = R2
V
CC
L
S1
R1
R
L
Test
Point
From Output
Under Test
From Output
Under Test
Test
Point
Test
Point
From Output
Under Test
C
C
L
R
L
R2
L
C
L
(see Note A)
(see Note A)
(see Note A)
LOAD CIRCUIT FOR
BI-STATE
TOTEM-POLE OUTPUTS
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
3.5 V
3.5 V
Timing
Input
High-Level
1.3 V
1.3 V
1.3 V
Pulse
0.3 V
0.3 V
t
h
t
w
t
su
3.5 V
3.5 V
0.3 V
Data
Input
Low-Level
1.3 V
1.3 V
1.3 V
1.3 V
Pulse
0.3 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VOLTAGE WAVEFORMS
PULSE DURATIONS
3.5 V
0.3 V
Output
Control
(low-level
enabling)
1.3 V
1.3 V
3.5 V
t
PZL
Input
1.3 V
1.3 V
t
PLZ
0.3 V
PHL
3.5 V
t
Waveform 1
S1 Closed
(see Note B)
t
PLH
1.3 V
V
OH
In-Phase
Output
1.3 V
1.3 V
1.3 V
V
OL
0.3 V
V
OL
t
PHZ
t
PLH
t
PZH
t
PHL
V
OH
V
Waveform 2
S1 Open
(see Note B)
OH
OL
Out-of-Phase
Output
(see Note C)
1.3 V
1.3 V
0.3 V
V
0 V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
NOTES: A.
C includes probe and jig capacitance.
L
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. When measuring propagation delay items of 3-state outputs, switch S1 is open.
D. All input pulses have the following characteristics: PRR ≤ 1 MHz, t = t = 2 ns, duty cycle = 50%.
r
f
E. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuits and Voltage Waveforms
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
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any product or service without notice, and advise customers to obtain the latest version of relevant information
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pertaining to warranty, patent infringement, and limitation of liability.
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accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
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Copyright 1998, Texas Instruments Incorporated
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