Datasheet

 
   
SCLS117D − DECEMBER 1982 − REVISED SEPTEMBER 2003
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
V
CC
T
A
= 25°C SN54HC166 SN74HC166
UNIT
V
CC
MIN MAX MIN MAX MIN MAX
UNIT
2 V 6 4.2 5
f
clock
Clock frequency
4.5 V
31 21 25
MHz
f
clock
Clock frequency
6 V 36 25 29
MHz
2 V 100 150 125
CLR low
4.5 V 20 30 25
t
w
Pulse duration
CLR low
6 V 17 26 21
ns
t
w
Pulse duration
2 V 80 120 100
ns
CLK high or low
4.5 V 16 24 20
CLK high or low
6 V 14 20 17
2 V 145 220 180
SH/LD high before CLK↑
4.5 V 29 44 36
SH/LD high before CLK↑
6 V 25 38 31
2 V 80 120 100
SER before CLK↑
4.5 V 16 24 20
SER before CLK↑
6 V 14 20 17
2 V 100 150 125
t
su
Setup time CLK INH low before CLK↑
4.5 V 20 30 25
ns
t
su
Setup time
CLK INH low before CLK↑
6 V 17 26 21
ns
2 V 80 120 100
Data before CLK↑
4.5 V 16 24 20
Data before CLK↑
6 V 14 20 17
2 V 40 60 50
CLR inactive before CLK↑
4.5 V 8 12 10
CLR inactive before CLK↑
6 V 7 10 9
2 V 0 0 0
SH/LD high after CLK↑
4.5 V 0 0 0
SH/LD high after CLK↑
6 V 0 0 0
2 V 5 5 5
SER after CLK↑
4.5 V 5 5 5
t
h
Hold time
SER after CLK
6 V 5 5 5
ns
t
h
Hold time
2 V 0 0 0
ns
CLK INH high after CLK↑
4.5 V 0 0 0
CLK INH high after CLK↑
6 V 0 0 0
2 V 5 5 5
Data after CLK↑
4.5 V 5 5 5
Data after CLK
6 V 5 5 5