18QHTF21-31.61388-PD

Oscillators Overview

The 18QHTF21-31.61388-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 31.61388 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby function for power down control. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Standard XO configuration with LVCMOS output logic
• Integrated standby mode for power management
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• Digital signal processing systems
• Communication equipment timing references
• Embedded microcontroller clock sources

Oscillators Procurement Notes

Verify the specific suffix PD indicates the Standby functionality as documented. Confirm the 1.8V supply requirement matches the target circuit design. Ensure the 4-SMD footprint aligns with the PCB layout specifications. Cross-reference the 31.61388 MHz frequency against system clock requirements to avoid harmonic interference.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside power-down capabilities. The LVCMOS interface ensures compatibility with standard digital logic families. The small form factor makes it ideal for space-constrained designs where thermal performance and size are critical constraints.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 4-SMD package. The series supports both Enable/Disable and Standby control options, providing flexibility for different power management strategies in portable and industrial electronics.

Oscillators Replacement Considerations

Direct substitutes must match the 31.61388 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify that alternative components support the same Standby control mechanism. Check pinout compatibility to ensure seamless integration without PCB redesign.