Datasheet

 
   
SCLS160D − DECEMBER 1982 − REVISED SEPTEMBER 2003
4
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 SN54HC4040 SN74HC4040
UNIT
V
CC
MIN MAX MIN MAX MIN MAX
UNIT
2 V 5.5 3.7 4.3
f
clock
Clock frequency
4.5 V
28 19 22
MHz
f
clock
Clock frequency
6 V 33 22 25
MHz
2 V 90 135 115
CLK high or low
4.5 V 18 27 23
t
w
Pulse duration
CLK high or low
6 V 15 23 20
ns
t
w
Pulse duration
2 V 70 105 90
ns
CLR high
4.5 V 14 21 18
CLR high
6 V 12 18 15
2 V 60 90 75
t
su
Setup time, CLR inactive before CLK↓
4.5 V
12 18 15
ns
t
su
Setup time, CLR inactive before CLK↓
6 V 10 15 13
ns
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
V
CC
T
A
= 25°C SN54HC4040 SN74HC4040
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
2 V 5.5 10 3.7 4.3
f
max
4.5 V 28 45 19 22
MHz
f
max
6 V 33 53 22 25
MHz
2 V 62 150 225 190
t
pd
CLK Q
A
4.5 V 16 30 45 38
ns
t
pd
CLK
Q
A
6 V 12 26 38 32
ns
2 V 63 140 210 175
t
PHL
CLR Any
4.5 V 17 28 42 35
ns
t
PHL
CLR
Any
6 V 13 24 36 30
ns
2 V 28 75 110 95
t
t
Any
4.5 V 8 15 22 19
ns
t
t
Any
6 V 6 13 19 16
ns
operating characteristics, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance No load 88 pF