18QHTF21-87.500-PD

Overview

The 18QHTF21-87.500-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 87.5 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, functioning with a supply voltage of 1.8V. It features a standby mode for power-down control. The component is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm by 1.6mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby functionality to reduce power consumption during idle states
• Utilizes a small form factor surface-mount package design

Applications

• Battery-powered portable electronic devices
• General-purpose timing clock generation
• Digital signal processing circuits requiring precise frequency references

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply rail stability meets the oscillator's noise immunity specifications. Confirm that the PCB footprint matches the 4-SMD no-lead package dimensions precisely to avoid assembly issues. Cross-reference the datasheet for any specific handling or reflow soldering profile recommendations provided by the manufacturer.

Selection Notes

Select this component when a stable 87.5 MHz reference is required in space-constrained designs. The 1.8V supply voltage makes it suitable for modern low-voltage digital systems. Consider the LVCMOS output compatibility with downstream logic families. Evaluate the need for standby control if power management is a critical system requirement. Compare physical size constraints against other available oscillator packages.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronic Ind. Co., Ltd. The series offers various frequencies while maintaining consistent electrical characteristics and package dimensions. The 'PD' suffix typically indicates the presence of a power-down or standby pin configuration. This family is designed for applications requiring reliable timing signals in compact electronic assemblies.

Replacement Considerations

Direct replacements must match the 87.5 MHz frequency, 1.8V supply voltage, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical parameters such as phase noise and jitter specifications. Consult official substitution lists from Mercury Electronics or authorized distributors for validated equivalent parts.