MC14532BD

Overview

The MC14532BD is an 8-bit priority encoder constructed with CMOS enhancement mode devices. It accepts eight data inputs (D0 through D7) and provides a binary address for the active input with the highest priority. The device features three address outputs (Q0-Q2), a group select output (GS), and an enable output (Eout). It operates within a supply voltage range of 3.0 Vdc to 18.0 Vdc and supports ambient temperatures from -55°C to +125°C. Propagation delay times vary by voltage: at 5V, delays are up to 600ns; at 10V, up to 340ns; and at 15V, up to 220ns.

Feature Summary

• Provides a binary address for the active input with the highest priority among eight data lines.
• Includes diode protection on all inputs to guard against high static voltages or electric fields.
• Capable of driving two low-power TTL loads or one low-power Schottky TTL load over the rated temperature range.

Applications

• Digital-to-Analog conversion circuits
• Analog-to-Digital conversion circuits
• Cascaded systems requiring 4-bit output addressing

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the base part number covers multiple configurations. Confirm RoHS compliance status for the specific variant being procured. Ensure the component meets the required operating temperature range for the intended application environment.

Selection Notes

Select this component when an 8-bit priority encoding function is required in a CMOS logic family. Consider the propagation delay specifications relative to the system clock speed and supply voltage. Verify that the SOIC-16 package dimensions fit the available PCB space and that the drive current capabilities meet the load requirements.

Part Context

This component belongs to the MC14532B series of priority encoders manufactured by onsemi. It is designed for applications requiring efficient binary encoding of multiple input signals into a compact digital format. The device is part of a broader family of logic ICs used in various digital signal processing and control systems.

Replacement Considerations

• MC14532BDG
• MC14532BDR2

FAQ

How does the MC14532BD handle multiple active inputs?

It assigns priority based on the input index, providing the binary address for the active input with the highest priority (e.g., D7 has higher priority than D0).

What is the purpose of the GS output?

The Group Select (GS) output indicates whether any of the data inputs are active while the device is enabled.