SN74F251BDRG4 [TI]
F/FAST SERIES, 8 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, PDSO16, PLASTIC, SO-16;
| 型号： | SN74F251BDRG4 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | F/FAST SERIES, 8 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, PDSO16, PLASTIC, SO-16 光电二极管 输出元件 逻辑集成电路 |
| 文件： | 总7页 (文件大小：105K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ꢀꢁꢂ ꢃ ꢄ ꢅ ꢂ ꢆ ꢇꢈ ꢉꢀꢁꢊ ꢃꢄ ꢅꢂꢆ ꢇ
ꢆ ꢋꢌ ꢄꢋ ꢍꢉ ꢎꢏꢐꢏꢉꢀ ꢑꢒ ꢑꢓꢐꢌ ꢔꢀꢕ ꢖꢗ ꢒꢐ ꢘ ꢙꢒ ꢑꢚ ꢑ ꢔꢀ
ꢛ ꢘꢐ ꢜꢉ ꢝ ꢋꢀꢐꢏꢐ ꢑꢉ ꢌꢗ ꢐꢙ ꢗꢐ ꢀ
SDFS066A − MARCH 1987 − REVISED OCTOBER 1993
SN54F251B . . . J PACKAGE
SN74F251B . . . D OR N PACKAGE
(TOP VIEW)
• 3-State Versions of SN54F151B and
SN74F151B
• 3-State Outputs Interface Directly With
System Bus
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
D3
D2
D1
D0
Y
W
G
GND
V
CC
• Performs Parallel-to-Serial Conversion
D4
D5
D6
D7
A
• Complementary Outputs Provide True and
Inverted Data
• Package Options Include Plastic
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
B
C
description
SN54F251B . . . FK PACKAGE
(TOP VIEW)
These data selectors/multiplexers contain full
binary decoding to select one of eight data
sources
and
feature
strobe-controlled
complementary outputs. The 3-state outputs can
interface with and drive data lines of bus-
organized systems. When the strobe (G) input is
high, both outputs are in a high-impedance state
in which both the upper and lower transistors of
each totem-pole output are off, and the output
neither drives nor loads the bus significantly.
3
2
1
20 19
18
4
5
6
7
8
D5
D6
NC
D7
A
D1
D0
NC
Y
17
16
15
14
W
9 10 11 12 13
The SN54F251B is characterized for operation
over the full military temperature range of −55°C
to 125°C. The SN74F251B is characterized for
operation from 0°C to 70°C.
NC − No internal connection
FUNCTION TABLE
INPUTS
OUTPUTS
SELECT
STROBE
G
C
X
L
B
X
L
A
X
L
Y
W
Z
H
L
L
L
L
L
L
L
L
Z
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
L
L
H
L
L
H
H
L
L
H
L
H
H
H
H
L
H
L
H
H
H
D0, D1, . . . D7 = the level of the respective D input.
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ꢞ
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ꢥ
ꢥ
ꢞ
ꢞ
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ꢞ
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ꢢ
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ꢩ
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ꢦ
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ꢪ
ꢐꢩ
ꢨ
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ꢦ
ꢬ
ꢞ
ꢧ
ꢤ
ꢦ
ꢥ
ꢞ
ꢥ
ꢡ
ꢢ
ꢟ
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ꢦ
ꢮ
Copyright 1993, Texas Instruments Incorporated
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ꢰ
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ꢥ ꢩ ꢦ ꢥꢞ ꢟꢳ ꢡꢠ ꢤ ꢬꢬ ꢪꢤ ꢢ ꢤ ꢣ ꢩ ꢥ ꢩ ꢢ ꢦ ꢮ
ꢢ
ꢢ
ꢤ
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ꢥ
ꢲ
ꢮ
ꢙ
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ꢡ
ꢭ
ꢨ
ꢧ
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ꢞ
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ꢪ
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ꢧ
ꢩ
ꢦ
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ꢞ
ꢟ
ꢳ
ꢭ
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ꢞ
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ꢭ
ꢩ
2−1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
ꢀꢁ ꢂ ꢃꢄ ꢅ ꢂ ꢆ ꢇꢈ ꢉ ꢀ ꢁꢊ ꢃ ꢄꢅ ꢂ ꢆ ꢇ
ꢆ ꢋꢌꢄ ꢋꢍ ꢉ ꢎꢏꢐꢏꢉ ꢀ ꢑꢒ ꢑꢓ ꢐꢌ ꢔꢀ ꢕꢖ ꢗꢒꢐꢘ ꢙ ꢒꢑ ꢚꢑꢔꢀ
ꢛꢘ ꢐ ꢜ ꢉꢝ ꢋꢀ ꢐꢏꢐꢑ ꢉ ꢌ ꢗꢐ ꢙꢗꢐ ꢀ
SDFS066A − MARCH 1987 − REVISED OCTOBER 1993
†
logic symbol
MUX
0
7
G
EN
0
11
A
10
B
G
7
9
C
2
0
1
2
3
4
5
6
7
4
D0
3
5
6
Y
D1
2
W
D2
1
D3
15
D4
14
D5
13
D6
12
D7
†
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.
2−2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
ꢀꢁꢂ ꢃ ꢄ ꢅ ꢂ ꢆ ꢇꢈ ꢉꢀ ꢁꢊ ꢃꢄ ꢅꢂꢆ ꢇ
ꢆ ꢋꢌ ꢄꢋ ꢍꢉ ꢎꢏꢐꢏꢉꢀ ꢑꢒ ꢑꢓꢐꢌ ꢔꢀꢕ ꢖꢗ ꢒꢐ ꢘ ꢙꢒ ꢑꢚ ꢑ ꢔꢀ
ꢛ ꢘꢐ ꢜꢉ ꢝ ꢋꢀꢐꢏꢐ ꢑꢉꢌ ꢗ ꢐꢙ ꢗꢐ ꢀ
SDFS066A − MARCH 1987 − REVISED OCTOBER 1993
logic diagram (positive logic)
7
G
4
D0
3
D1
2
D2
1
D3
5
Data
Y
Inputs
6
15
W
D4
14
D5
13
D6
12
D7
11
A
Data
10
B
Select
(Binary)
9
C
Pin numbers shown are for the D, J, and N packages.
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
CC
Input voltage range (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −1.2 V to 7 V
Input current range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −30 mA to 5 mA
Voltage range applied to any output in the disabled or power-off state . . . . . . . . . . . . . . . . . . . −0.5 V to 5.5 V
Voltage range applied to any output in the high state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V
CC
Current into any output in the low state: SN54F251B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA
SN74F251B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 mA
Operating free-air temperature range: SN54F251B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C
SN74F251B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.
NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed.
2−3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
ꢀꢁ ꢂ ꢃꢄ ꢅ ꢂ ꢆ ꢇꢈ ꢉ ꢀ ꢁꢊ ꢃ ꢄꢅ ꢂ ꢆ ꢇ
ꢆ ꢋꢌꢄ ꢋꢍ ꢉ ꢎꢏꢐꢏꢉ ꢀ ꢑꢒ ꢑꢓ ꢐꢌ ꢔꢀ ꢕꢖ ꢗꢒꢐꢘ ꢙ ꢒꢑ ꢚꢑꢔꢀ
ꢛꢘ ꢐ ꢜ ꢉꢝ ꢋꢀ ꢐꢏꢐꢑ ꢉ ꢌ ꢗꢐ ꢙꢗꢐ ꢀ
SDFS066A − MARCH 1987 − REVISED OCTOBER 1993
recommended operating conditions
SN54F251B
MIN NOM
SN74F251B
MIN NOM
UNIT
MAX
MAX
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
IH
IL
High-level input voltage
Low-level input voltage
Input clamp current
0.8
−18
− 3
0.8
−18
− 3
24
V
I
I
I
mA
mA
mA
°C
IK
High-level output current
Low-level output current
Operating free-air temperature
OH
OL
20
T
A
−55
125
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54F251B
SN74F251B
PARAMETER
TEST CONDITIONS
I = −18 mA
UNIT
†
†
MIN TYP
MAX
MIN TYP
MAX
V
IK
V
CC
= 4.5 V,
−1.2
−1.2
V
I
I
I
I
I
I
= − 1 mA
= − 3 mA
= − 1 mA to −3 mA
= 20 mA
2.5
2.4
3.4
3.3
2.5
2.4
2.7
3.4
3.3
OH
OH
OH
OL
OL
V
= 4.5 V
CC
CC
V
V
OH
V
= 4.75 V,
0.3
0.5
V
OL
V
CC
= 4.5 V
V
= 24 mA
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
= 2.7 V
50
−50
0.1
µA
µA
OZH
OZL
I
O
O
V
= 0.5 V
−50
0.1
V = 7 V
mA
µA
I
V = 2.7 V
20
20
IH
I
V = 0.5 V
− 0.6
−150
22
− 0.6
−150
22
mA
mA
IL
I
‡
V
= 0
−60
−60
OS
O
Condition A
Condition B
15
16
15
16
V
CC
= 5.5 V,
I
mA
CC
See Note 2
24
24
†
‡
All typical values are at V
CC
= 5 V, T = 25°C.
A
Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
is measured with the outputs open under the following conditions:
NOTE 2:
I
CC
A. Select input and data input at 4.5 V, output control grounded
B. All inputs at 4.5 V
2−4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
ꢀꢁꢂ ꢃ ꢄ ꢅ ꢂ ꢆ ꢇꢈ ꢉꢀ ꢁꢊ ꢃꢄ ꢅꢂꢆ ꢇ
ꢆ ꢋꢌ ꢄꢋ ꢍꢉ ꢎꢏꢐꢏꢉꢀ ꢑꢒ ꢑꢓꢐꢌ ꢔꢀꢕ ꢖꢗ ꢒꢐ ꢘ ꢙꢒ ꢑꢚ ꢑ ꢔꢀ
ꢛ ꢘꢐ ꢜꢉ ꢝ ꢋꢀꢐꢏꢐ ꢑꢉꢌ ꢗ ꢐꢙ ꢗꢐ ꢀ
SDFS066A − MARCH 1987 − REVISED OCTOBER 1993
switching characteristics (see Note 3)
V
C
= 5 V,
= 50 pF,
V
= 4.5 V to 5.5 V,
C = 50 pF,
L
CC
L
CC
R1 = 500 Ω,
R2 = 500 Ω,
R1 = 500Ω,
R2 = 500 Ω,
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
†
T = MIN to MAX
A
T
= 25°C
A
′F251B
TYP
5.4
4.4
6.2
6
SN54F251B
SN74F251B
MIN
3.5
2.5
4.5
4
MAX
9
MIN
3.5
2.5
3.5
3
MAX
11.5
8
MIN
3.5
2.5
4
MAX
9.5
7.5
12.5
9
t
t
t
t
t
t
t
t
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PZH
A, B, or C
W
Y
ns
ns
ns
ns
ns
ns
ns
ns
7.5
10.5
8.5
6.5
4
14
10.9
8
A, B, or C
3.5
2
2.5
1
3.7
1.9
3.8
4.5
3.6
3.8
2.5
2.4
4.8
4
1.8
1
7
Any D
Any D
G
W
Y
6
1
5
3
7
2.3
2.3
2
9
2.3
2.5
2
8
3
7
9
8
t
t
t
t
2.5
2.5
1.9
1
6
7
7
W
W
Y
t
6
2.5
1.4
1
7.5
6
2.5
1.5
1
6.5
6
PZL
5.5
4.5
7
PHZ
G
t
5
4.5
8.5
8
PLZ
3.4
2.9
1.9
1
2.7
2.6
1.7
1
8.5
9
2.9
2.6
1.8
1
PZH
G
t
7.5
5.5
4.5
PZL
2.5
2.3
5.5
5.5
5.5
4.5
PHZ
Y
G
t
PLZ
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 3: Load circuits and waveforms are shown in Section 1.
2−5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
2−6
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相关型号：
SN74F253DE4
Multiplexer, F/FAST Series, 2-Func, 4 Line Input, 1 Line Output, True Output, TTL, PDSO16, PLASTIC, SOIC-16
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