MC1225F

I/o Expanders Overview

The MC1225F is a CMOS I/O expander manufactured by Motorola, designed for serial interface expansion in embedded systems. It utilizes a 14-C FlatPack surface-mount package to provide four bidirectional input/output channels. The component operates with low voltage requirements and supports standard communication protocols, enabling efficient management of peripheral connections while minimizing pin count on the host microcontroller.

I/o Expanders Feature Summary

• Provides four independent bidirectional I/O channels for system expansion
• Utilizes serial interface protocol to reduce host controller pin usage
• Implemented in CMOS technology for low power consumption
• Designed for surface-mount installation in compact electronic assemblies

I/o Expanders Applications

• Embedded control systems requiring additional digital I/O lines
• Portable devices with limited pin availability on main processors
• Industrial automation modules needing signal expansion
• Consumer electronics utilizing serial communication interfaces

I/o Expanders Procurement Notes

Verify the manufacturer origin, as Motorola semiconductor assets were acquired by NXP Semiconductors. Confirm that the specific MC1225F part number corresponds to the original Motorola production run rather than an NXP equivalent or successor device. Ensure the datasheet matches the 14-C FlatPack physical dimensions and electrical characteristics required for your design.

I/o Expanders Selection Notes

Select this component when a serial interface I/O expander is preferred over parallel alternatives to save PCB space and controller pins. Consider the 14-C FlatPack package constraints during layout planning. Evaluate the operating voltage range against your system's logic levels to ensure compatibility without additional level shifting circuitry.

I/o Expanders Part Context

The MC1225F belongs to the broader family of I/O expanders developed by Motorola for serial communication applications. This series addresses the need for expanding digital inputs and outputs in microcontroller-based designs where direct port access is insufficient. The component represents a specialized solution for managing peripheral connectivity in resource-constrained environments.

I/o Expanders Replacement Considerations

Check for NXP equivalents following the acquisition of Motorola's semiconductor division. Verify pinout compatibility if substituting with other serial I/O expanders. Ensure the replacement maintains the same 14-C FlatPack form factor or requires adapter solutions.