CD74HC688PWT Datasheet PDF - TI

●Description

●The ’HC688 and ’HCT688 are 8-bit magnitude comparators designed for use in computer and logic applications that require the comparison of two 8-bit binary words. When the compared words are equal the output (Y) is low and can be used as the enabling input for the next device in a cascaded application.

●Features

●• Cascadable

●• Fanout (Over Temperature Range)

● - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

● - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

●• Wide Operating Temperature Range . . . -55oC to 125oC

●• Balanced Propagation Delay and Transition Times

●• Significant Power Reduction Compared to LSTTL Logic ICs

●• HC Types

● - 2V to 6V Operation

● - High Noise Immunity: NIL= 30%, NIH= 30%of VCCat VCC= 5V

●• HCT Types

●\- 4.5V to 5.5V Operation

●\- Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH= 2V (Min)

●\- CMOS Input Compatibility, Il ≤1µA at VOL, VOH