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Motorola Semiconductors - 8-BIT MAGNITUDE COMPARATORS

Numéro de référence 74LS682
Description 8-BIT MAGNITUDE COMPARATORS
Fabricant Motorola Semiconductors 
Logo Motorola Semiconductors 





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74LS682 fiche technique
8-BIT MAGNITUDE
COMPARATORS
The SN54 / 74LS682, 684, 688 are 8-bit magnitude comparators. These
device types are designed to perform comparisons between two eight-bit
binary or BCD words. All device types provide P = Q outputs and the LS682
and LS684 have P>Q outputs also.
The LS682, LS684 and LS688 are totem pole devices. The LS682 has a
20 kpullup resistor on the Q inputs for analog or switch data.
CONNECTION DIAGRAMS (TOP VIEW)
VCC P=Q Q7 P7 Q6 P6 Q5 P5 Q4 P4
20 19 18 17 16 15 14 13 12 11
SN54/74LS682/684
1 2 3 4 5 6 7 8 9 10
P>Q P0 Q0 P1 Q1 P2 Q2 P3 Q3 GND
VCC P=Q Q7 P7 Q6 P6 Q5 P5 Q4 P4
20 19 18 17 16 15 14 13 12 11
SN54/74LS682
SN54/74LS684
SN54/74LS688
8-BIT MAGNITUDE
COMPARATORS
LOW POWER SCHOTTKY
20
1
20
1
20
1
J SUFFIX
CERAMIC
CASE 732-03
N SUFFIX
PLASTIC
CASE 738-03
DW SUFFIX
SOIC
CASE 751D-03
SN54/74LS688
1 2 3 4 5 6 7 8 9 10
G P0 Q0 P1 Q1 P2 Q2 P3 Q3 GND
TYPE
LS682
LS684
LS688
P=Q
yes
yes
yes
P>Q
yes
yes
no
OUTPUT
ENABLE
no
no
yes
OUTPUT
CONFIGURATION
totem-pole
totem-pole
totem-pole
PULLUP
yes
no
no
ORDERING INFORMATION
SN54LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXDW SOIC
FUNCTION TABLE
INPUTS
OUTPUTS
DATA
ENABLES
P, Q G, GT G2 P = Q P > Q
P=Q L L L H
P>Q L L H L
P<Q L L H H
X H HHH
H = HIGH Level, L = LOW Level, X = Irrelevant
FAST AND LS TTL DATA
5-603

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