MC74F158A Datasheet, PDF (2/2 Pages) Motorola, Inc – QUAD 2-INPUT MULTIPLEXER

MC74F158A
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
Supply Voltage
TA
Operating Ambient Temperature Range
IOH
Output Current — High
IOL
Output Current — Low
Min
Typ
Max
Unit
74
4.5
5.0
5.5
V
74
0
25
70
°C
74
–1.0
mA
74
20
mA
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Min Typ Max Unit
Test Conditions
VIH
Input HIGH Voltage
2.0
V Guaranteed Input HIGH Voltage
VIL
Input LOW Voltage
0.8
V Guaranteed Input LOW Voltage
VIK
Input Clamp Diode Voltage
–1.2
V
IIN = –18 mA
VCC = MIN
VOH
Output HIGH Voltage
74
2.7
3.4
V
IOH = –1.0 mA
VCC = 4.75 V
74
2.5
VCC = 4.50 V
VOL
Output LOW Voltage
0.35 0.5
V
IOL = 20 mA
VCC = MIN
IIH
Input HIGH Current
20
µA VIN = 2.7 V
VCC = MAX
100
µA VIN = 7.0 V
IIL
Input LOW Current
–0.6 mA VIN = 0.5 V
VCC = MAX
IOS
Output Short Circuit Current (Note 2)
–60
–150 mA VOUT = 0 V
VCC = MAX
ICC
Power Supply Current (Note 3)
10
15
mA VCC = MAX, VIN = HIGH
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under guaranteed operating ranges.
2. Not more than one output should be shorted at a time, nor for more than 1 second.
3. ICC measured with outputs open and 4.5 V applied to all inputs.
AC CHARACTERISTICS
Symbol
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
Propagation Delay
S to Z
Propagation Delay
E to Zn
Propagation Delay
In to Z
Parameter
74F
74F
TA = +25°C
VCC = +5.0 V
CL = 50 pF
TA = 0°C to 70°C
VCC = 5.0 V ±10%
CL = 50 pF
Min
Max
Min
Max
Unit
3.0
8.5
3.0
9.5
ns
2.5
6.5
2.5
7.0
2.5
6.0
2.5
7.0
ns
2.0
6.0
2.0
6.5
2.0
5.9
2.0
7.0
ns
1.0
4.0
1.0
4.5
FUNCTIONAL DESCRIPTION
The F158A quad 2-input multiplexer selects four bits of data
from two sources under the control of a common Select input
(S) and presents the data in inverted form at the four outputs.
The Enable input (E) is active LOW. When E is HIGH, all of the
outputs (Z) are forced HIGH regardless of all other inputs. The
F158A 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.
A common use of the F158A is the moving of data from two
groups of registers to four common output busses. The partic-
ular register from which the data comes is determined by the
state of the Select input. A less obvious use is as a function
generator. The F158A can generate four functions of two vari-
ables with one variable in common. This is useful for imple-
menting gating functions.
FAST AND LS TTL DATA
4-70