SN74LS194AD データシートの表示（PDF） - ON Semiconductor
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SN74LS194AD Datasheet PDF : 8 Pages
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SN74LS194A
MODE SELECT — TRUTH TABLE
INPUTS
OUTPUTS
OPERATING MODE
MR
S1
S0
DSR
DSL
Pn
Q0
Q1
Q2
Q3
Reset
L
X
X
X
X
X
L
L
L
L
Hold
H
I
I
X
X
X
q0
q1
q2
q3
Shift Left
H
h
I
X
I
X
q1
q2
q3
L
H
h
I
X
h
X
q1
q2
q3
H
Shift Right
H
I
h
I
X
X
L
q0
q1
q2
H
I
h
h
X
X
H
q0
q1
q2
Parallel Load
H
h
h
X
X
Pn
P0
P1
P2
P3
L = LOW Voltage Level
H = HIGH Voltage Level
X = Don’t Care
I = LOW voltage level one set-up time prior to the LOW to HIGH clock transition
h = HIGH voltage level one set-up time prior to the LOW to HIGH clock transition
pn (qn) = Lower case letters indicate the state of the referenced input (or output) one set-up time prior to the LOW to HIGH clock transition.
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 for
All Inputs
VIL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage for
All Inputs
VIK
Input Clamp Diode Voltage
– 0.65 – 1.5
V
VCC = MIN, IIN = – 18 mA
VOH
Output HIGH Voltage
2.7
3.5
V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
VOL
Output LOW Voltage
0.25 0.4
0.35 0.5
V
IOL = 4.0 mA
V
IOL = 8.0 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
IIH
Input HIGH Current
20
µA
0.1
mA
IIL
Input LOW Current
– 0.4 mA
IOS
Short Circuit Current (Note 1)
– 20
– 100 mA
ICC
Power Supply Current
23
mA
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
VCC = MAX, VIN = 2.7 V
VCC = MAX, VIN = 7.0 V
VCC = MAX, VIN = 0.4 V
VCC = MAX
VCC = MAX
AC CHARACTERISTICS (TA = 25°C)
Symbol
fMAX
tPLH
tPHL
tPHL
Parameter
Maximum Clock Frequency
Propagation Delay,
Clock to Output
Propagation Delay,
MR to Output
Limits
Min Typ Max
25
36
14
22
17
26
Unit
MHz
ns
19
30
ns
Test Conditions
VCC = 5.0 V
CL = 15 pF
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