The ’HC21 logic gates utilize silicon gate CMOS technology to achieve operating speeds similar to LSTTL gates with the low power consumption of standard CMOS integrated circuits.
Buffered Inputs, Balanced Propagation Delay and Transition Times, Significant Power Reduction Compared to LSTTL Logic ICs.
Typical Propagation Delay: 9ns at VCC = 5V, CL = 15pF, TA = 25°C, 2V to 6V Operation.
Fanout (Over Temperature Range) Standard Outputs . . . . . . . . 10 LSTTL Loads Bus Driver Outputs . . . . . . 15 LSTTL Loads.
Wide Operating Temperature Range . . . -55°C to 125°C, High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V.