HCF4532BE

The HCF4532BE is a standard logic IC from STMicroelectronics, functioning as an 8x3 priority encoder. This device converts an eight-position input code into a three-bit binary code. It is built using CMOS technology, ensuring low power consumption and compatibility with other CMOS logic families like CD40xx and 74HCxx.

The encoder features active-high inputs and outputs. Priority encoding means that if multiple inputs are active simultaneously, the output will correspond to the highest-numbered active input. This functionality is crucial in applications where input signal precedence must be managed.

Key electrical specifications include an operating voltage range of 3V to 15V, a low quiescent current of less than 600uA, and propagation delays typically under 85ns at 15V. The device is housed in a DIP-16 package and operates within a temperature range of -40°C to +85°C.

Auxiliary pins like EI (input enable), EO (output enable), and GS (group select) allow for cascading multiple HCF4532BE chips to create larger encoders, such as 10x4 or 16x4 configurations, providing design flexibility for complex digital systems.