www.fairchildsemi.com 4
MM74HC165
AC Electrical Characteristics
V
CC
= 5V, T
A
= 25°C, C
L
= 15 pF, t
r
= t
f
= 6 ns
AC Electrical Characteristics
C
L
= 50 pF, t
r
= t
f
= 6 ns (unless otherwise specified)
Symbol Parameter Conditions Typ
Guaranteed
Limit
Units
f
MAX
Maximum Operating Frequency 50 30 MHz
t
PHL
, t
PLH
Maximum Propagation Delay H to Q
H
or Q
H
15 25 ns
t
PHL
, t
PLH
Maximum Propagation Delay 13 25 ns
Serial Shift/Parallel Load to Q
H
t
PHL
, t
PLH
Maximum Propagation Delay 15 25 ns
Clock to Output
t
S
Minimum Setup Time Serial Input 10 20 ns
to Clock, Parallel or Data to Shift/Load
t
S
Minimum Setup Time Shift/Load to Clock 11 20 ns
t
S
Minimum Setup Time Clock Inhibit to Clock 10 20 ns
t
H
Minimum Hold Time Serial 0ns
Input to Clock or
Parallel Data to Shift/Load
t
W
Minimum Pulse Width Clock 16 ns
Symbol Parameter Conditions
V
CC
T
A
= 25°CT
A
= −40 to 85°CT
A
= −55 to 125°C
Units
Typ Guaranteed Limits
f
MAX
Maximum Operating 2.0V 10 5 4 4 MHz
Frequency 4.5V 45 27 21 18 MHz
6.0V 50 32 25 21 MHz
t
PHL
, t
PLH
Maximum Propagation 2.0V 70 150 189 225 ns
Delay H to Q
H
or Q
H
4.5V 21 30 38 45 ns
6.0V 18 26 33 39 ns
t
PHL
, t
PLH
Maximum Propagation 2.0V 70 175 220 260 ns
Delay Serial Shift/ 4.5V 21 35 44 52 ns
Parallel Load to Q
H
6.0V 18 30 37 44 ns
t
PHL
, t
PLH
Maximum Propagation 2.0V 70 150 189 225 ns
Delay Clock to Output 4.5V 21 30 38 45 ns
6.0V 18 26 33 39 ns
t
S
Minimum Setup Time 2.0V 35 100 125 150 ns
Serial Input to Clock, 4.5V 11 20 25 30 ns
or Parallel Data to Shift/Load 6.0V 9 17 21 25 ns
t
S
Minimum Setup Time 2.0V 38 100 125 150 ns
Shift/Load to Clock 4.5V 12 20 25 30 ns
6.0V 9 17 21 25 ns
t
S
Minimum Setup Time 2.0V 35 100 125 150 ns
Clock Inhibit to Clock 4.5V 11 20 25 30 ns
6.0V 9 17 21 25 ns
t
H
Minimum Hold Time Serial 2.0V 0 0 0 ns
Input to Clock or 4.5V 0 0 0 ns
Parallel Data to Shift/Load 6.0V 0 0 0 ns
t
W
Minimum Pulse Width, 2.0V 30 80 100 120 ns
Clock 4.5V 9 16 20 24 ns
6.0V 8 14 18 20 ns
t
THL
, t
TLH
Maximum Output 2.0V 30 75 95 110 ns
Rise and Fall Time 4.5V 9 15 19 22 ns
6.0V 8 13 16 19 ns
t
r
, t
f
Maximum Input Rise and 2.0V 1000 1000 1000 ns
Fall Time 4.5V 500 500 500 ns
6.0V 400 400 400 ns
