MC145028DWR2

Encoders, Decoders, Converters Overview

The MC145028DWR2 is a CMOS decoder integrated circuit manufactured by NXP USA Inc., designed for remote control applications. It operates within a supply voltage range of 4.5V to 18V and supports an operating temperature range from -40°C to +85°C. The device features a 16-SOIC (SOG) surface-mount package with a width of 7.50mm. It interprets nine trinary digits as address codes, enabling 19,683 unique addresses when using trinary data or 512 codes with binary data. The Valid Transmission (VT) output activates upon receiving two consecutive matching address sequences.

Encoders, Decoders, Converters Feature Summary

• Decodes nine trinary digits as address codes for high-capacity addressing
• Validates transmissions through double-word matching logic
• Interfaces directly with RF, ultrasonic, or infrared modulators

Encoders, Decoders, Converters Applications

• Remote control systems requiring extensive address space
• RF receiver modules in consumer electronics
• Infrared security system receivers

Encoders, Decoders, Converters Procurement Notes

Verify the component status carefully as this specific part number may be discontinued. Confirm that the replacement SC41344 meets the required voltage specifications if a lower voltage operation is necessary. Ensure the ordering suffix matches the desired tape and reel packaging format for automated assembly processes.

Encoders, Decoders, Converters Selection Notes

Select the MC145028 over the MC145027 when a larger address space is required, as it utilizes all nine input lines for addressing rather than separating them into address and data bits. Ensure the design accommodates the 4.5V minimum supply voltage requirement. Verify that the external RC components align with the oscillator frequency calculations provided in the datasheet.

Encoders, Decoders, Converters Part Context

This component belongs to the MC145026/27/28 family of CMOS encoder and decoder pairs originally developed by Motorola. These devices are widely used in legacy remote control designs. The MC145028 specifically serves as the decoder counterpart to the MC145026 encoder, providing robust decoding capabilities for trinary encoded signals.

Encoders, Decoders, Converters Replacement Considerations

SC41344 is a documented low-voltage version of the MC145028.