This document describes the features and characteristics of the M74HCT138 model, including high speed, low power dissipation, compatibility with TTL outputs, etc.
The M74HCT138 is a high‑speed CMOS 3‑to‑8 line decoder with inverting outputs, compatible with TTL logic levels. It features low power dissipation, symmetrical output impedance, and balanced propagation delays.
The document provides absolute maximum ratings, recommended operating conditions, electrical characteristics, mechanical dimensions for various packages (DIP‑16, SOP, TSSOP), and pin‑out information.
| Power Dissipation (typical at 65 °C) | 500 mW |
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The device can dissipate up to 500 mW (at 65 °C).