18QHTF21-31.400-PD

Oscillators Overview

The 18QHTF21-31.400-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 31.4 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 manage energy consumption. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is engineered for precise timing applications requiring low profile and reliable performance.

Oscillators Feature Summary

• Supports standby mode for power management
• Utilizes LVCMOS output logic levels
• Compact surface-mount package design

Oscillators Applications

• General purpose clock generation
• Digital signal processing timing
• Communication interface synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific reflow soldering profiles recommended by the manufacturer to ensure joint integrity during assembly processes.

Oscillators Selection Notes

Select this component when a low-profile, 1.8V LVCMOS oscillator is required for space-constrained designs. Consider the 31.4 MHz frequency specifically if it matches your system clock needs. Evaluate the power-down feature benefits for battery-operated devices. Compare physical dimensions against available board real estate to ensure compatibility with the 2.0x1.6mm footprint.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystals and oscillators. The series typically offers various frequencies within a small SMD form factor. Mercury Electronics has a long history in Taiwan manufacturing frequency control products, providing alternatives to larger traditional packages.

Oscillators Replacement Considerations

Direct substitutes may include other 31.4 MHz LVCMOS oscillators in 2.0x1.6mm packages from manufacturers like Epson or NDK. Verify pinout compatibility and electrical specifications such as current consumption and startup time before substitution.