18QHTF21-50.220-PD

Overview

The 18QHTF21-50.220-PD is a 50.22 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It utilizes LVCMOS output logic and operates at a supply voltage of 1.8V. The component features a power-down standby function and is housed in a 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports LVCMOS output logic for standard digital interface compatibility
• Includes a power-down standby mode to reduce power consumption
• Utilizes a compact 4-SMD no-lead surface mount package

Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems requiring 50.22 MHz frequency
• Embedded devices utilizing low-voltage 1.8V power domains

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a precise 50.22 MHz timing source is required within a low-voltage 1.8V environment. The LVCMOS output ensures compatibility with standard logic families. Consider the power-down feature if energy efficiency is critical. Verify that the small 2.0x1.6mm form factor fits the available board space constraints compared to larger oscillator packages.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies with standardized LVCMOS outputs and 1.8V operation. The 'PD' suffix indicates the inclusion of a power-down control pin, allowing for active standby management in portable or power-sensitive applications.

Replacement Considerations

Direct substitutes must match the 50.22 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify pinout compatibility and electrical characteristics such as phase noise and jitter against the original datasheet to ensure functional equivalence in the circuit.