18QHTF21-31.700-PD

Oscillators Overview

The 18QHTF21-31.700-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 31.7 MHz and utilizes LVCMOS output logic levels. The device requires a 1.8V supply voltage and supports standby mode for power-down functionality. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Supports enable/disable functionality via standby control
• Utilizes LVCMOS output logic for digital interface compatibility
• Operates on a low 1.8V supply voltage
• Features a leadless SMD package for space-constrained designs

Oscillators Applications

• Digital signal processing systems
• Communication equipment clock sources
• Embedded microcontroller timing references
• Consumer electronics with low-power requirements

Oscillators Procurement Notes

Verify the specific suffix PD against official Mercury Electronics documentation to confirm exact packaging or tape-and-reel specifications. Ensure the 1.8V supply requirement aligns with target system rails. Confirm LVCMOS output compatibility with receiving logic gates. Cross-reference the 31.7 MHz frequency tolerance against application timing budgets before finalizing procurement orders.

Oscillators Selection Notes

Select this component when a 31.7 MHz reference is required with low-voltage operation. The LVCMOS output simplifies integration with standard digital logic families. The 4-SMD no-lead form factor aids in high-density PCB layouts. Verify that the standby feature meets power management needs for battery-operated or energy-efficient designs.

Oscillators Part Context

This part belongs to the 18QHTF21 series of quartz-based oscillators from Mercury Electronics. The series offers various frequencies including 51.2 MHz and 77.76 MHz variants. Mercury Electronics is a pioneer in Taiwan's quartz industry, providing frequency control products since 1973. This specific model represents a standard XO configuration within their portfolio.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series models such as 18QHTF21-51.200-PD or 18QHTF21-77.760-PD if frequency adjustment is permissible. Ensure any replacement maintains the 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions for mechanical compatibility.