MM54C74/MM74C74 is a dual D flip-flop. It is a monolithic complementary MOS (CMOS) integrated circuit constructed with N- and P-channel enhancement transistors. Each flip-flop has independent data, preset, clear and clock inputs and Q and Q outputs. The logic level present at the data input is transferred to the output during the positive going transition of the clock pulse. Preset or clear is independent of the clock and accomplished by a low level at the preset or clear input.
This document is a technical datasheet for the MM54C74 and MM74C74 dual D flip-flops manufactured by National Semiconductor. The devices are monolithic complementary MOS (CMOS) integrated circuits constructed with N- and P-channel enhancement transistors, featuring independent data, preset, clear, and clock inputs.
| Supply voltage range | 3V to 15V |
|---|---|
| Operating Temperature Range (MM74C74) | -40°C to +85°C |
| Maximum Clock Frequency (Vcc=10V) | 8.0 MHz |
The logic level present at the data input is transferred to the output during the positive going transition of the clock pulse.
Preset is independent of the clock and is accomplished by a low level at the preset input.