74688 8-Bit Comparator IC with P=Q Output 20-Pin
Prices updated: 13 Oct 2026
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| Store | product | Price | View in store |
|---|---|---|---|
 Makers Electronics | 74688 8-bit Magnitude Comparator 5V IC DIP-20 | 36 EGP | View in store |
Price history
Lowest daily price, last 90 days
Lowest price recorded: 36 EGP
About this product
The 74688 is an 8-bit comparator IC with two 8-bit word inputs (P and Q) and an active-low enable input. Its P=Q output goes low when the two words are equal, which suits address matching, data verification and bus comparison. The listing calls it a magnitude comparator, but its pin table shows an equality output.
Specifications
- Word size
- 8 bits (P0–P7, Q0–Q7)
- Output
- P=Q, low when equal
- Enable
- Active low (pin 1)
- Supply pin (Vcc)
- Pin 20
- Ground pin (GND)
- Pin 10
- Package
- 20-pin
Frequently asked questions
What is the price of 74688 8-Bit Comparator IC with P=Q Output 20-Pin in Egypt?
74688 8-Bit Comparator IC with P=Q Output 20-Pin currently costs 36 EGP in Egypt.
Where can I buy 74688 8-Bit Comparator IC with P=Q Output 20-Pin in Egypt?
74688 8-Bit Comparator IC with P=Q Output 20-Pin is available from Makers Electronics. Compare the offers above to find the best price.
How do I use it to detect a match against a fixed address?
Set the P inputs to the reference address and connect the Q inputs to the incoming bus. Hold the enable input low; the P=Q output then goes low when the bus value matches the reference.
What should I do with unused input pins?
Do not leave them floating. Tie each unused input to a defined logic level, high or low, consistent with the datasheet, so the output remains stable.
