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

HD74HC682/HD74HC684
8-bit Magnitude Comparator
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 k 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)
Function Table
Input
Data
Outputs
P, Q
P=Q
P>Q
P=Q
L
H
P>Q
H
L
P<Q
Note:
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.