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參數(shù)資料
| 型號(hào)： | 933812580602 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 編、解碼器及復(fù)用、解復(fù)用 |
| 英文描述： | F/FAST SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, INVERTED OUTPUT, PDIP16 |
| 封裝： | 0.300 INCH, PLASTIC, SOT-38-4, DIP-16 |
| 文件頁(yè)數(shù)： | 3/10頁(yè) |
| 文件大?。?/td> | 84K |
| 代理商： | 933812580602 |
Philips Semiconductors
Product specification
74F157A, 74F158A
Data selectors/multiplexers
74F157A:
Quad 2-input data selector/multiplexer, non-inverting
74F158A:
Quad 2-input data selector/multiplexer, inverting
2
2000 Jun 30
853-0346 24024
DESCRIPTION
The 74F157A is a high speed Quad 2-Input Multiplexer which
selects 4 bits of data from one of two sources under the control of a
common Select input (S). The Enable input (E) is active when Low.
When E is High, all of the outputs (Yn) are forced Low regardless of
all other input conditions.
Moving data from two registers to a common output bus is a
common use of the 74F157A. The state of the Select input
determines the particular register from which the data comes.
The device is the logic implementation of a 4-pole, 2-position switch
where the position of the switch is determined by the logic levels
supplied to the Select input.
The 74F158A is similar, but has inverting outputs (Yn).
Industrial temperature range (–10°C to +85°C) available for
74F157A
TYPE
TYPICAL
PROPAGATION
DELAY
TYPICAL
SUPPLY CURRENT
(TOTAL)
74F157A
4.6ns
15mA
74F158A
3.7ns
10mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%, Tamb = 0°C to +70°C
INDUSTRIAL RANGE
VCC = 5V ±10%, Tamb = –40°C to +85°C
PKG. DWG. #
16-pin plastic DIP
N74F157AN, N174F158AN
I74F157AN
SOT38-4
16-pin plastic SO
N74F157AD, N74F158AD
I74F157AD
SOT109-1
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
PINS
DESCRIPTION
74F (U.L.) HIGH/LOW
LOAD VALUE HIGH/LOW
Ina, Inb, Inc, Ind
Data inputs
1.0/1.0
20
A/0.6mA
S
Select input
1.0/1.0
20
A/0.6mA
E
Enable input
1.0/1.0
20
A/0.6mA
Ya–Yd
Data outputs (74F157A)
50/33
1.0mA/20mA
Ya–Yd
Data outputs (74F158A)
50/33
1.0mA/20mA
NOTE: One (1.0) FAST unit load is defined as: 20
A in the High state and 0.6mA in the Low state.
PIN CONFIGURATIONS, 74F157A
74F158A
16
15
14
13
12
11
10
7
6
5
4
3
2
1
Yb
VCC
Yd
I0c
I1c
I1d
E
I0d
S
I0a
I1b
I1a
Ya
I0b
9
8
GND
Yc
SF00215
16
15
14
13
12
11
10
7
6
5
4
3
2
1
Yb
VCC
Yd
I0c
I1c
I1d
E
I0d
S
I0a
I1b
I1a
Ya
I0b
9
8
GND
Yc
SF00216
LOGIC SYMBOLS, 74F157A
74F158A
VCC = Pin 16
GND = Pin 8
SF00217
1
15
S
E
2356
11
10
14
I0a
I1a
I0b
I1b
I0c
I1c
I0d
Ya
Yb
Yc
Yd
479
12
13
I1d
VCC = Pin 16
GND = Pin 8
SF00218
1
15
S
E
2356
11
10
14
I0a
I1a
I0b
I1b
I0c
I1c
I0d
Ya
Yb
Yc
Yd
479
12
13
I1d
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