18QHTF21-87.316-PD

Overview

The 18QHTF21-87.316-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 87.316 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 2.0mm x 1.6mm. This component is suitable for applications requiring precise timing signals within low-voltage digital systems.

Feature Summary

• Supports standby and power-down modes for energy efficiency
• Utilizes LVCMOS output logic for digital interface compatibility
• Housed in a small 4-SMD No Lead surface-mount package

Applications

• Low-voltage digital circuit timing
• Portable electronic devices requiring power management
• Communication equipment signal generation

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Ensure that the 1.8V supply voltage aligns with the target application's power rails. Confirm that the 4-SMD No Lead package footprint matches the PCB layout constraints. Cross-reference the manufacturer's datasheet for detailed electrical characteristics and reliability data to ensure compliance with operational standards.

Selection Notes

Select this model when a fixed 87.316 MHz clock source is required with low-power capabilities. The 1.8V operating voltage makes it suitable for modern low-voltage logic families. Consider the physical size constraints as the 2.0x1.6mm package is compact. Evaluate the need for standby functionality if power conservation is a critical design parameter compared to continuous operation oscillators.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency solutions. The '18' prefix typically indicates the 1.8V supply voltage variant, while 'QHTF21' denotes the specific package and performance class. The '-PD' suffix confirms the inclusion of power-down functionality. This series supports various frequencies, allowing designers to choose specific values like 87.316 MHz for targeted applications without custom manufacturing.

Replacement Considerations

Direct substitutes must match the 87.316 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and thermal characteristics. Alternative models from other manufacturers require careful evaluation of jitter specifications and phase noise to ensure functional equivalence in the specific circuit design.