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HD74LS164 Datasheet, PDF (3/9 Pages) Hitachi Semiconductor – 8-Bit Parallel-Out Serial-In Shift Registers | |||
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HD74LS164
Electrical Characteristics
(Ta = â20 to +75 °C)
Item
Symbol
min.
typ.* max.
Unit
Condition
Input voltage
Output voltage
Input current
Short-circuit output
current
VIH
2.0
â
â
V
VIL
â
â
0.8
V
VOH
2.7
â
â
V
VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V,
IOH = â400 µA
VOL
â
â
0.4
V
IOL = 4 mA VCC = 4.75 V, VIH = 2 V,
â
â
0.5
IOL = 8 mA VIL = 0.8 V
IIH
â
â
20
µA VCC = 5.25 V, VI = 2.7 V
IIL
â
â
â0.4
mA VCC = 5.25 V, VI = 0.4 V
II
â
â
0.1
mA VCC = 5.25 V, VI = 7 V
IOS
â20
â
â100
mA VCC = 5.25 V
Supply current**
ICC
â
16
27
mA VCC = 5.25 V
Input clamp voltage
VIK
â
â
â1.5
V
VCC = 4.75 V, IIN = â18 mA
Notes: * VCC = 5 V, Ta = 25°C
** ICC is measured with outputs open, serial inputs grounded, the clock input at 2.4 V, and a momentary
grounded, then 4.5 V applied to clear.
Switching Characteristics
(VCC = 5 V, Ta = 25°C)
Item
Symbol Inputs Outputs min.
typ.
max.
Unit Condition
Maximum clock frequency
Æmax
25
36
â
MHz
Propagation delay time
tPHL
Clear
Q
tPLH
Clock
Q
â
24
36
ns CL = 15 pF,
â
17
27
ns
RL = 2 kâ¦
tPHL
Clock
Q
â
21
32
ns
Rev.2.00, Feb.18.2005, page 3 of 8
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