74688

8-bit magnitude comparator


E	1 •	20	Vcc
P₀	2	19	P=Q
Q₀	3	18	Q₇
P₁	4	17	P₇
Q₁	5	16	Q₆
P₂	6	15	P₆
Q₂	7	14	Q₅
P₃	8	13	P₅
Q₃	9	12	Q₄
GND	10	11	P₄

Pin	Symbol	Description
1	E	enable (active low)
2	P₀	word input
3	Q₀	word input
4	P₁	word input
5	Q₁	word input
6	P₂	word input
7	Q₂	word input
8	P₃	word input
9	Q₃	word input
10	GND	ground
11	P₄	word input
12	Q₄	word input
13	P₅	word input
14	Q₅	word input
15	P₆	word input
16	Q₆	word input
17	P₇	word input
18	Q₇	word input
19	P=Q	equal-to output (low when P = Q)
20	Vcc	supply voltage

Specifications

(typical values under recommended operating conditions, unless specified)

Parameter	Value	Unit
Propagation delay, P_n, Q_n to P=Q	17 (74HC/HCT)	ns
Propagation delay, E to P=Q	8 (74HC) 12 (74HCT)	ns

Note: Data is maintained by an independent source and accuracy is not guaranteed. Check with the manufacturer's datasheet for up-to-date information.