18QHTF21-42.800-PD

Oscillators Overview

The 18QHTF21-42.800-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 42.8 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to reduce energy consumption during idle periods. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down capabilities
• Provides LVCMOS output signal compatibility

Oscillators Applications

• General clock generation for digital circuits
• Embedded systems requiring low-power oscillators
• Portable electronic devices with space constraints

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability.

Oscillators Selection Notes

Select this component when a precise 42.8 MHz reference is required for LVCMOS-compatible interfaces. Consider the 1.8V operating voltage and the availability of a power-down feature for applications prioritizing energy efficiency. The small 2.0x1.6 mm form factor makes it suitable for dense board layouts where space is limited compared to larger oscillator packages.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The manufacturer has decades of experience in Taiwan's crystal industry. This series typically offers standard XO configurations with various frequency options, catering to consumer electronics and industrial applications requiring reliable timing signals.

Oscillators Replacement Considerations

Direct substitutes include other 42.8 MHz LVCMOS oscillators in 2.0x1.6mm SMD packages with 1.8V operation. Verify pinout compatibility and electrical parameters such as phase noise and jitter if replacing with different manufacturers.