The MC74HC273A/D is an Onsemi high-performance silicon-gate CMOS octal D flip-flop with common clock and reset. Its pinout is identical to that of the LS273. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. This device consists of eight D flip-flops with common Clock and Reset inputs. Each flip-flop is loaded with a low-to-high transition of the Clock input. Reset is asynchronous and active low.
The MC74HC273A is an octal D‑flip‑flop with common clock and reset inputs. It offers 10 LSTTL loads per output, operates from 2.0 V to 6.0 V, and features low input current (1 µA) and high noise immunity typical of CMOS devices. The device is pin‑compatible with the LS273 and can interface directly to CMOS, NMOS and TTL logic families.
The datasheet lists detailed electrical specifications, maximum ratings, recommended operating conditions, timing parameters, and mechanical package dimensions for PDIP‑20, SOIC‑20, TSSOP‑20 and SOEIAJ‑20 variants. Ordering information and package options are also provided.
| Operating Voltage Range | 2.0 V to 6.0 V |
|---|---|
| Output Drive Capability | 10 LSTTL loads |
| Low Input Current | 1 µA |
The device operates from 2.0 V to 6.0 V.
Each output can drive up to 10 LSTTL loads.