M74HC4020 is a high-speed CMOS 14-stage binary counter with features such as high speed, low power dissipation, high noise immunity, symmetrical output impedance, balanced propagation delays, and wide operating voltage range.
The M74HC4020 is a high‑speed CMOS 14‑stage binary counter with a clear input for resetting and a clock input that increments the count on a negative transition. It is pin‑compatible with the 74 series 4020 and offers twelve divided outputs.
The document lists absolute maximum ratings, recommended operating conditions, DC and AC electrical characteristics, mechanical dimensions for DIP‑16 and TSSOP‑16 packages, and test circuit examples. Key performance figures include a 2 V‑6 V supply range, up to 70 MHz typical operation at 6 V, and 500 mW power dissipation.
| Supply Voltage Range | 2 V to 6 V |
|---|---|
| Typical Maximum Clock Frequency | 70 MHz at 6 V |
| Power Dissipation | 500 mW (at 65 °C) |
| Input High Level Voltage (VIH) | 2.0 V |
The device operates from 2 V to 6 V.
Typical maximum frequency is 70 MHz when VCC is 6 V.
CLEAR resets the counter to the all‑low state.
Maximum power dissipation is 500 mW (at 65 °C).