HD74HC682 Datasheet, PDF (1/7 Pages) Hitachi Semiconductor – 8-bit Magnitude Comparator

HD74HC682, HD74HC684
8-bit Magnitude Comparator
REJ03D0642-0200
(Previous ADE-205-528)
Rev.2.00
Mar 30, 2006
Description
These magnitude comparators perform comparisons of two eight-bit binary or BCD words. All types provide P=Q
outputs and provide P>Q outputs. The HD74HC682 features 20 kΩ pullup termination resistors on the Q inputs for
analog or switch data.
Type
HD74HC682
HD74HC684
P=Q
Yes
Yes
P>Q
Yes
Yes
Output Enable
No
No
20 kΩ Pullup
Yes
No
Features
• High Speed Operation
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: V_CC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: I_CC (static) = 4 µA max (Ta = 25°C)
• Ordering Information
Part Name
Package Type
Package Code
(Previous Code)
Package
Abbreviation
HD74HC682P
HD74HC684P
DILP-20 pin
PRDP0020AC-B
P
(DP-20NEV)
HD74HC682RPEL
PRSP0020DC-A
SOP-20 pin (JEDEC)
HD74HC684RPEL
(FP-20DBV)
RP
Taping Abbreviation
(Quantity)
—
EL (1,000 pcs/reel)
Function Table
Note:
H:
L:
Input Data
Outputs
P, Q
P=Q
P>Q
P=Q
L
H
P>Q
H
L
P<Q
H
H
1. The P<Q function can be generated by applying the P=Q and P>Q Outputs to a 2-input NAND gate.
high level
low level
Rev.2.00 Mar 30, 2006 page 1 of 6