Datasheet

SN54HC684, SN74HC684
8-BIT MAGNITUDE COMPARATORS
SCLS340B – MARCH 1996 – REVISED MARCH 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
CC
T
A
= 25°C SN54HC684 SN74HC684
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
6 V 5.9 5.999 5.9 5.9
V
I
OH
= –4 mA 4.5 V 3.98 4.30 3.7 3.84
I
OH
= –5.2 mA 6 V 5.48 5.80 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
6 V 0.001 0.1 0.1 0.1
V
I
OL
= 4 mA 4.5 V 0.17 0.26 0.4 0.33
I
OL
= 5.2 mA 6 V 0.15 0.26 0.4 0.33
I
IH
V
I
= V
CC
6 V 0.1 100 1000 1000 nA
I
IL
V
I
= 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
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 SN54HC684 SN74HC684
UNIT
PARAMETER
(INPUT) (OUTPUT)
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
2 V 130 275 413 344
t
pd
P or Q Any
4.5 V 26 55 88 69
ns
6 V 22 47 70 58
2 V 38 75 110 95
t
t
Any
4.5 V 8 15 22 19
ns
6 V 6 13 19 16
operating characteristics, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance No load 40 pF
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