TC74HCT273AP/AF is a high-speed CMOS 8-circuit D-type flip-flop produced by Toshiba. The input is TTL level, and it can be directly connected to the TTL level bus. The signal at the D input is transferred to the Q output at the rising edge of the clock. The clear input is activated at the “L” level, resetting all flip-flop outputs to “L”. All inputs are protected by diodes to prevent electrostatic discharge.
This document describes the TC74HCT273AP/AF octal D‑type flip‑flop with clear, a CMOS digital integrated circuit using Toshiba's OMOS technology. It includes functional features such as high‑speed operation (up to 90 MHz), low power consumption, and TTL‑compatible inputs.
The datasheet contains pin‑out diagrams for DIP‑20 and SOP‑20 packages, absolute maximum ratings, operating conditions, electrical and timing characteristics, and mechanical dimensions. It also provides handling guidelines and usage restrictions for safety‑critical applications. This manual is written in Japanese.
| Supply voltage (operating range) | 4.5 V – 5.5 V |
|---|---|
| Maximum power dissipation (DIP package) | 500 mW |
| Input protection diode current | +20 mA |
| Output diode current | +20 mA |
| Maximum output current | +25 mA |
| Operating temperature range | -40 °C – 85 °C |
| Maximum clock frequency (typical) | 90 MHz |
The device operates with a supply voltage (Vcc) between 4.5 V and 5.5 V.
The maximum power dissipation for the DIP‑20 package is 500 mW.
The device is specified for operation from –40 °C to +85 °C.
The typical maximum clock frequency is 90 MHz.