: Provides product information, pinout details, and circuit diagrams for HIGHWAY09A Holtek ICs Manufacturer Databases
This document is for informational purposes only. Highway Semiconductor assumes no liability for application assistance or customer product design. Customers are responsible for their products and applications. highway09a ic datasheet
Built-in (up to 32 segments) and touch key support (up to 16 keys) . : Provides product information, pinout details, and circuit
The heart of the Highway09A datasheet lies in the electrical tables. The "Absolute Maximum Ratings" section defines the physical boundaries of the device—stressing the limits of voltage, current, and temperature beyond which permanent damage occurs. This section represents the "red line" that an engineer must never cross. Following this are the "Electrical Characteristics," which detail the operational performance under specific conditions. Parameters such as logic high/low voltage thresholds, quiescent current, and propagation delay are listed here. For a component like the Highway09A, understanding these nuances ensures signal integrity and power efficiency. For instance, knowing the exact dropout voltage or input impedance allows for precise calculation of supporting components like resistors and capacitors. Built-in (up to 32 segments) and touch key
If your IC has 8 pins and HIGHWAY09A on top, it’s almost certainly a or LM2903 (common for cheap comparator modules).