18QHTF21-31.8755-PD

Oscillators Overview

The 18QHTF21-31.8755-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 31.8755 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features a power-down capability via a standby control pin, allowing for energy management in portable systems. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm, suitable for space-constrained printed circuit board layouts.

Oscillators Feature Summary

• Supports standby mode for power reduction
• Compact surface-mount form factor
• LVCMOS digital output interface

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Communication equipment utilizing precise timing signals
• Embedded systems with limited board space

Oscillators Procurement Notes

Verify the specific suffix 'PD' indicates the power-down feature when sourcing replacements. Confirm the operating voltage matches the system design requirements of 1.8V. Ensure the footprint corresponds to the 4-SMD No Lead package dimensions. Cross-reference the frequency tolerance specifications if strict timing accuracy is required for the application.

Oscillators Selection Notes

Select this component when a 31.8755 MHz clock source is needed with minimal power usage. The 1.8V supply requirement makes it suitable for modern low-voltage digital circuits. Consider the physical size constraints of the 2.0x1.6mm package during layout planning. Evaluate the need for active power-down control versus continuous operation based on system duty cycles.

Oscillators Part Context

This part belongs to the QHTF series of quartz oscillators from Mercury Electronics. The series typically offers various frequencies and supply voltages. The '18' prefix generally denotes the 1.8V supply variant. The 'PD' suffix specifies the inclusion of a power-down control function, distinguishing it from models without this feature.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical frequency and voltage ratings. Verify that replacement units support the same LVCMOS logic levels and package outline. Check if alternative suppliers offer equivalent performance characteristics for the 31.8755 MHz specification.