DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION 1 G Enable Input (Active LOW) 2, 4, 6, 8, 11, P0 to P7 Word Inputs 13, 15, 17 3, 5, 7, 9, 12, Q0 to Q7 Word Outputs 14, 16, 18 19 P = Q Equal to Output 10 GND Ground (0V) 20 VCC Positive Supply Voltage t(s)TRUTH TABLE te ProducX: Don’t Care P, Q P=Q P <> Q X Obsolete Product(s) - ObsoleLOGIC DIAGRAM INPUTS G L L H OUTPUT P=Q L H H This logic diagram has not be used to estimate propagation delays 2/9 M74HC688 ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit VCC Supply Voltage -0.5 to +7 V VI DC Input Voltage -0.5 to VCC + 0.5 V VO DC Output Voltage -0.5 to VCC + 0.5 V IIK DC Input Diode Current ± 20 mA IOK DC Output Diode Current ± 20 mA IO DC Output Current ± 25 mA ICC or IGND DC VCC or Ground Current ± 50 mA PD Power Dissipation 500(*) mW )Tstg Storage Temperature -65 to +150 °C t(sTL Lead Temperature (10 sec) 300 °C ABSOLUTE MAXIMUM RATINGS
are those values beyond which damage to the device may occur. Functional operation under these co...
STMicroelectronics
