18QHTF21-101.500-PD

Overview

The 18QHTF21-101.500-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 101.5 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. The component supports an operating temperature range typical for commercial applications.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic for digital interfacing
• Features a leadless surface-mount package design

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references
• Portable electronic devices requiring low power

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly.

Selection Notes

Select this component when a precise 101.5 MHz reference is required in space-constrained designs. The LVCMOS interface simplifies integration with standard digital logic families. The power-down feature makes it suitable for battery-operated applications where standby current reduction is critical. Consider the 2.0x1.6mm form factor for high-density board layouts.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The series includes various frequencies and voltage options, all sharing similar small-footprint packages. Mercury Electronics has a long history in manufacturing quartz crystals and oscillators, positioning this component within their standard XO lineup for general-purpose timing applications.

Replacement Considerations

Direct substitutes may include other 101.5 MHz LVCMOS oscillators in 2.0x1.6mm packages from different manufacturers, provided pin compatibility and electrical specifications match. Verify that alternative parts support the same 1.8V supply and standby functions. Cross-reference datasheets for thermal and mechanical tolerances to ensure seamless replacement without redesign.