74F157 PHILIPS [NXP Semiconductors], 74F157 Datasheet - Page 2

• Manufacturer Part Number: 74F157
• Description: Data selectors/multiplexers
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
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).
ORDERING INFORMATION
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
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
LOGIC SYMBOLS, 74F157A
16-pin plastic DIP
1996 Mar 12
16-pin plastic SO
DESCRIPTION
Data selectors/multiplexers
74F157A:
74F158A:
V
GND = Pin 8
CC
Ina, Inb, Inc, Ind
15
= Pin 16
1
Ya–Yd
Ya–Yd
PINS
S
E
S
E
GND
I0a I1a I0b I1b I0c I1c I0d
I0a
I1a
I0b
I1b
Yb
2
Ya
S
Quad 2-input data selector/multiplexer, non-inverting
Quad 2-input data selector/multiplexer, inverting
3
1
2
3
4
5
6
7
8
Data inputs
Select input
Enable input
Data outputs (74F157/74F157A)
Data outputs (74F158/74F158A)
V
Ya
4
5
CC
Yb
= 5V 10%, T
7
6
N74F157AN, N174F158AN
N74F157AD, N74F158AD
COMMERCIAL RANGE
11
Yc
9
SF00215
10
Yd
12
13
10
16
15
14
12
11
9
DESCRIPTION
14
V
E
I0d
I1d
Yd
I0c
I1c
Yc
SF00217
amb
CC
I1d
13
= 0 C to +70 C
ORDER CODE
2
74F157A
74F158A
Industrial temperature range (–10 C to +85 C) available for
74F157A
V
V
GND = Pin 8
74F157
74F158
TYPE
CC
CC
74F (U.L.) HIGH/LOW
15
= Pin 16
1
= 5V 10%, T
INDUSTRIAL RANGE
1.0/1.0
1.0/1.0
1.0/1.0
50/33
50/33
I74F157AN
I74F157AD
S
E
PROPAGATION
GND
I0a I1a I0b I1b I0c I1c I0d
amb
TYPICAL
I0a
I1a
I0b
I1b
2
Yb
Ya
DELAY
S
4.6ns
4.6ns
3.7ns
3.7ns
= –40 C to +85 C
3
74F158A
1
2
3
4
5
6
7
8
74F158A
Ya
5
4
74F157A, 74F158A
Yb
6
7
11
Yc
9
LOAD VALUE HIGH/LOW
SF00216
Yd
10
12
16
15
14
13
12
10
11
9
SUPPLY CURRENT
1.0mA/20mA
1.0mA/20mA
20 A/0.6mA
20 A/0.6mA
20 A/0.6mA
14
V
E
I0d
I1d
Yd
I0c
I1c
Yc
Product specification
SF00218
CC
TYPICAL
I1d
(TOTAL)
13
15mA
15mA
10mA
10mA
853-0346 16555
PKG. DWG. #
SOT109-1
SOT38-4