Texas Instruments 20-SOIC CD74HCT688M

The CD74HCT688M is a CMOS-based digital comparator IC manufactured by Texas Instruments. This 20-pin device, available in DIP and SOIC packages, is designed for identity comparison operations within logic circuits. It compares eight data pairs and outputs a low signal when inputs match (A=B). The chip operates over a voltage range of 2V to 6V with typical propagation delays around 34ns at 4.5V and supports a wide operating temperature from -55°C to 125°C. It consumes low power with typical current consumption of 4mA per input pair.