MIC74YQS

I/o Expanders Overview

The MIC74YQS-TR is an I/O expander manufactured by Microchip Technology, designed for systems requiring additional digital input and output capabilities via serial communication. This component operates within a supply voltage range of 2.7V to 3.6V and supports clock frequencies up to 100 kHz on the I2C and SMBus interfaces. It features eight configurable I/O pins with sink currents of 7mA and source currents of 10mA. The device includes an interrupt output capability and is housed in a 16-pin QSOP package. It is rated for operation across a temperature range of -40°C to +85°C.

I/o Expanders Feature Summary

• Supports I2C and SMBus communication protocols for system integration
• Provides eight general-purpose digital I/O lines
• Includes interrupt output functionality for event-driven processing
• Features fan speed control capability

I/o Expanders Applications

• General purpose I/O expansion in embedded systems
• Fan speed control applications
• I2C/SMBus peripheral interfacing

I/o Expanders Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging when ordering. Confirm the part status as discontinued or not recommended for new designs (NRND) if applicable to current procurement cycles. Ensure compatibility with 2.7V to 3.6V logic levels and 100 kHz bus speeds. Check for RoHS compliance documentation. Validate the 16-QSOP package dimensions against PCB footprint requirements.

I/o Expanders Selection Notes

Select this component when an I2C-compatible I/O expander is required for low-voltage applications. Consider the 7mA/10mA drive strength limits for load connections. Evaluate the 16-pin QSOP package size constraints. Verify that the 100 kHz interface speed meets system timing requirements. Assess the need for interrupt outputs versus polled I/O operations.

I/o Expanders Part Context

The MIC74YQS belongs to the MIC74 family of I/O expanders from Microchip Technology. These devices are designed to extend system connectivity through standard serial interfaces. The family typically offers configurable I/O lines and interrupt capabilities for efficient microcontroller resource management in space-constrained designs.

I/o Expanders Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data. Consult Microchip Technology for current alternatives or legacy support options.