HD74LS194AFP 查看數據表（PDF） - Renesas Electronics
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HD74LS194AFP Datasheet PDF : 8 Pages
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HD74LS194A
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
Supply voltage
VCC
7
V
Input voltage
VIN
7
V
Power dissipation
PT
400
mW
Storage temperature
Tstg
–65 to +150
°C
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions
Item
Supply voltage
Output current
Operating temperature
Clock frequency
Clock pulse width
Clear pulse width
Mode Control
Setup time
A, B, C, D, R, L
CLR
(inactive state)
Hold time
Symbol
VCC
IOH
IOL
Topr
ƒclock
tw (CK)
tw (CLR)
tsu
th
Min
4.75
—
—
–20
0
20
20
30
20
25
0
Typ
5.00
—
—
25
—
—
—
—
—
—
—
Max
5.25
–400
8
75
25
—
—
—
—
—
—
Unit
V
µA
mA
°C
MHz
ns
ns
ns
ns
ns
ns
Electrical Characteristics
(Ta = –20 to +75 °C)
Item
Symbol
min.
typ.* max.
Unit
Condition
Input voltage
Output voltage
Input current
Short-circuit output
current
VIH
2.0
—
—
V
VIL
—
—
0.8
V
VOH
2.7
—
—
V
VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V,
IOH = –400 µA
VOL
—
—
0.4
V
IOL = 4 mA VCC = 4.75 V, VIH = 2 V,
—
—
0.5
IOL = 8 mA VIL = 0.8 V
IIH
—
—
20
µA VCC = 5.25 V, VI = 2.7 V
IIL
—
—
–0.4
mA VCC = 5.25 V, VI = 0.4 V
II
—
—
0.1
mA VCC = 5.25 V, VI = 7 V
IOS
–20
—
–100
mA VCC = 5.25 V
Supply current**
ICC
—
15
23
mA VCC = 5.25 V
Input clamp voltage
VIK
—
—
–1.5
V
VCC = 4.75 V, IIN = –18 mA
Notes: * VCC = 5 V, Ta = 25°C
** With all outputs open, inputs A through D grounded, and 4.5 V applied to S0, S1, clear and the serial inputs,
ICC is tested with a momentary GND, then 4.5 V, applied to clock.
Switching Characteristics
Item
Maximum clock frequency
Propagation delay time
Symbol
ƒmax
tPHL
tPLH
tPHL
Inputs
Clear
Clock
Clock
(VCC = 5 V, Ta = 25°C)
Outputs min. typ. max. Unit Condition
25
36
—
MHz
—
19
30
ns CL = 15 pF,
Q
—
14
22
ns RL = 2 kΩ
—
17
26
ns
Rev.3.00, Jul.15.2005, page 3 of 7
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