HCF4556M013TR

Overview

The HCF4556M013TR is a dual 2-to-4 line decoder/demultiplexer manufactured by STMicroelectronics. It features two independent circuits, each decoding two binary inputs to four active-low outputs. The device operates within a supply voltage range of 3V to 18V. It provides symmetrical output characteristics with high noise immunity and low quiescent current. The component is housed in a 16-SOIC surface-mount package.

Feature Summary

• Dual independent 2-to-4 line decoding capability
• Active-low output states for direct interfacing
• High noise immunity with standardized symmetrical output characteristics
• Low quiescent current specification across operating voltages

Applications

• Data routing and signal distribution systems
• Address decoding in memory architectures
• Control logic for peripheral selection
• Industrial control system interface modules

Procurement Notes

Verify the exact suffix 'M013TR' against official STMicroelectronics documentation to confirm the specific tape-and-reel packaging and temperature grade. Ensure compatibility with existing PCB footprints for the 16-SOIC package. Cross-reference lead times and obsolescence status directly with authorized distributors, as availability may vary.

Selection Notes

Select this component when dual independent decoding channels are required in a compact surface-mount form factor. Consider the 3V to 18V operating range for flexibility in various power supply environments. Verify that the active-low output polarity aligns with downstream input requirements. Evaluate propagation delay specifications against system timing constraints at the intended operating voltage.

Part Context

This part belongs to the HCF45xx series of CMOS logic devices from STMicroelectronics. These components are designed for general-purpose digital applications requiring reliable decoding functions. The series offers compatibility with standard TTL logic levels while maintaining low power consumption typical of CMOS technology.

Replacement Considerations

Check for pin-compatible alternatives such as the SN74HC4514 or CD4514 variants if single-channel decoding suffices. Verify electrical parameters like output drive current and propagation delay against original specifications before substituting.