18QHTF21-51.4102-PD

Overview

The 18QHTF21-51.4102-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 51.4102 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 during inactive periods. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm by 1.6mm. This surface-mount configuration facilitates automated assembly and integration into space-constrained electronic designs.

Feature Summary

• Supports low-voltage operation at 1.8V for efficient power management
• Includes standby and power-down functionality to reduce current draw
• Utilizes LVCMOS output logic for digital interface compatibility
• Features a leadless SMD package for compact board integration

Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded systems with limited power budgets

Procurement Notes

Verify the specific ordering suffix and frequency tolerance requirements against the official datasheet before procurement. Ensure that the 1.8V supply voltage aligns with the target system design. Confirm the package dimensions and pinout match the PCB footprint specifications. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and availability.

Selection Notes

Select this component when a 51.4102 MHz reference is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage and standby capabilities for power-sensitive applications. Evaluate the 2.0x1.6mm package size against available board real estate. Compare performance metrics such as phase noise and stability if specified in the technical documentation.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequency options within a standardized small outline package. The series supports LVCMOS outputs and includes power-down features across multiple models. The 51.4102 MHz variant provides a specific frequency point for applications requiring this exact clock rate, fitting within the broader family of surface-mount crystal oscillators.

Replacement Considerations

Direct substitutes must match the 51.4102 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD No Lead package dimensions. Verify pin compatibility and electrical characteristics with alternative manufacturers' components offering identical form factors and functional specifications.