74LS688 DIP 8 Bit Equality Comparator (74688 IC)

The 74LS688 is an 8 bit equality comparator integrated circuit designed to compare two 8 bit binary words and determine if they are equal. The device compares the data on the A inputs with the data on the B inputs and provides an output signal indicating whether both sets of inputs match.

This IC belongs to the LS TTL logic family and is commonly used in digital systems for address decoding memory comparison and data verification circuits. The DIP package makes it suitable for breadboard prototyping educational projects and PCB based digital electronics designs.

Key Features

• 8 bit equality comparator integrated circuit
• Compares two 8 bit binary input words
• Provides equality output signal
• TTL compatible logic levels
• Suitable for address decoding and digital comparison circuits
• High speed digital comparison operation
• DIP package suitable for prototyping and PCB mounting

Specifications

• IC Model = 74LS688
• Equivalent IC = 74688
• Logic Type = 8 bit equality comparator
• Logic Family = LS TTL
• Number Of Bits = 8
• Package Type = DIP
• Operating Voltage = 4.75V to 5.25V
• Application = Address decoding data comparison and digital logic circuits

Interfaces

• A0 = Input bit 0 group A
• A1 = Input bit 1 group A
• A2 = Input bit 2 group A
• A3 = Input bit 3 group A
• A4 = Input bit 4 group A
• A5 = Input bit 5 group A
• A6 = Input bit 6 group A
• A7 = Input bit 7 group A
• B0 = Input bit 0 group B
• B1 = Input bit 1 group B
• B2 = Input bit 2 group B
• B3 = Input bit 3 group B
• B4 = Input bit 4 group B
• B5 = Input bit 5 group B
• B6 = Input bit 6 group B
• B7 = Input bit 7 group B
• P_EQ = Equality output
• VCC = Power supply
• GND = Ground