The MC74HC273A/D is an 8-bit D Flip-Flop with Common Clock and Reset from ON Semiconductor.
The MC74HC273A is an octal D flip‑flop with common clock and asynchronous active‑low reset. It is pin‑compatible with the LS273 and its inputs work with standard CMOS, LSTTL, and TTL levels. The device offers 10 LSTTL loads per output, low input current (1 pA), and high noise immunity typical of CMOS.
Key specifications include an operating voltage range of 2.0 V to 6.0 V, maximum clock frequency up to 35 MHz, and propagation delays from 145 ns to 220 ns depending on supply voltage. The part is offered in PDIP‑20, SOIC‑20, TSSOP‑20, and SOEIAJ‑20 packages with detailed mechanical dimensions provided.
| Operating Voltage Range | 2.0 to 6.0 V |
|---|---|
| Output Drive Capability | 10 LSTTL Loads |
| Low Input Current | 1.0 pA |
| Maximum Clock Frequency | up to 35 MHz |
| Propagation Delay (Clock to Q) | 145‑220 ns (typical 180 ns) |
The recommended supply voltage is between 2.0 V and 6.0 V.