74F158A Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
74F158A Datasheet PDF : 10 Pages
| |||
Philips Semiconductors
Product specification
Data selectors/multiplexers
74F157A, 74F158A
74F157A:
74F158A:
Quad 2-input data selector/multiplexer, non-inverting
Quad 2-input data selector/multiplexer, inverting
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
74F157
74F157A
74F158
74F158A
TYPICAL
PROPAGATION
DELAY
4.6ns
4.6ns
3.7ns
3.7ns
TYPICAL
SUPPLY CURRENT
(TOTAL)
15mA
15mA
10mA
10mA
ORDERING INFORMATION
DESCRIPTION
16-pin plastic DIP
ORDER CODE
COMMERCIAL RANGE
VCC = 5V ±10%, Tamb = 0°C to +70°C
N74F157AN, N174F158AN
INDUSTRIAL RANGE
VCC = 5V ±10%, Tamb = –40°C to +85°C
I74F157AN
PKG. DWG. #
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
Ina, Inb, Inc, Ind
Data inputs
1.0/1.0
S
Select input
1.0/1.0
E
Enable input
1.0/1.0
Ya–Yd
Data outputs (74F157/74F157A)
50/33
Ya–Yd
Data outputs (74F158/74F158A)
50/33
NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOAD VALUE HIGH/LOW
20µA/0.6mA
20µA/0.6mA
20µA/0.6mA
1.0mA/20mA
1.0mA/20mA
PIN CONFIGURATIONS, 74F157A
74F158A
S1
I0a 2
I1a 3
Ya 4
I0b 5
I1b 6
Yb 7
GND 8
16 VCC
15 E
14 I0d
13 I1d
12 Yd
11 I0c
10 I1c
9 Yc
SF00215
S1
I0a 2
I1a 3
Ya 4
I0b 5
I1b 6
Yb 7
GND 8
16 VCC
15 E
14 I0d
13 I1d
12 Yd
11 I0c
10 I1c
9 Yc
SF00216
LOGIC SYMBOLS, 74F157A
2 3 5 6 11 10 14 13
74F158A
2 3 5 6 11 10 14 13
I0a I1a I0b I1b I0c I1c I0d I1d
1
S
15
E
Ya Yb Yc Yd
VCC = Pin 16
GND = Pin 8
4 7 9 12 SF00217
1996 Mar 12
I0a I1a I0b I1b I0c I1c I0d I1d
1
S
15
E
Ya Yb Yc Yd
VCC = Pin 16
GND = Pin 8
4 7 9 12
SF00218
2
853-0346 16555
Share Link: 