Datasheet
SCLS307B– JANUARY 1996 – REVISED JANUARY 2003
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
V
T
A
= 25°C SN54HC377 SN74HC377
UNIT
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
2 V 1.9 1.998 1.9 1.9
I
OH
= –20 µA
4.5 V 4.4 4.499 4.4 4.4
V
OH
V
I
= V
IH
or V
IL
I
OH
20
µA
6 V 5.9 5.999 5.9 5.9
V
V
OH
V
I
V
IH
or
V
IL
I
OH
= –4 mA 4.5 V 3.98 4.3 3.7 3.84
V
I
OH
= –5.2 mA 6 V 5.48 5.8 5.2 5.34
2 V 0.002 0.1 0.1 0.1
I
OL
= 20 µA
4.5 V 0.001 0.1 0.1 0.1
V
OL
V
I
= V
IH
or V
IL
I
OL
20
µA
6 V 0.001 0.1 0.1 0.1
V
V
OL
V
I
V
IH
or
V
IL
I
OL
= 4 mA 4.5 V 0.17 0.26 0.4 0.33
V
I
OL
= 5.2 mA 6 V 0.15 0.26 0.4 0.33
I
I
V
I
= V
CC
or 0 6 V ±0.1 ±100 ±1000 ±1000 nA
I
CC
V
I
= V
CC
or 0, I
O
= 0 6 V 8 160 80 µA
C
i
2 V to 6 V 3 10 10 10 pF
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
V
T
A
= 25°C SN54HC377 SN74HC377
UNIT
V
CC
MIN MAX MIN MAX MIN MAX
UNIT
2 V 5 3 4
f
clock
Clock frequency
4.5 V
25 16 20
MHz
f
clock
Clock
frequency
6 V 29 19 23
MHz
2 V 100 150 125
t
w
Pulse duration, CLK high or low
4.5 V 20 30 25
ns
t
w
Pulse
duration,
CLK
high
or
low
6 V 17 25 21
ns
2 V 100 150 125
D
4.5 V 20 30 25
t
Set p time before CLK↑
D
6 V 17 25 21
ns
t
su
Setup time before CLK↑
2 V 100 150 125
ns
CLKEN high or low
4.5 V 20 30 25
CLKEN
high
or
low
6 V 17 25 21
2 V 5 5 5
t
h
Hold time after CLK↑ CLKEN inactive or active, data
4.5 V 5 5 5
ns
h
,
6 V 5 5 5