18QHTF21-42.0802-PD

Oscillators Overview

The 18QHTF21-42.0802-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 42.0802 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down mode for standby functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby capability via power-down mode
• Utilizes a leadless surface-mount package design

Oscillators Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded control units operating at 1.8V logic levels

Oscillators 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's power architecture. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a specific 42.0802 MHz reference frequency. The LVCMOS output ensures compatibility with standard digital logic families. Consider the small 2.0x1.6 mm form factor for space-constrained designs. Verify thermal performance within the specified operating temperature range for the intended application environment.

Oscillators Part Context

This part belongs to the QHTF series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within a standardized small outline package. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from continuous-operation variants within the same physical footprint family.

Oscillators Replacement Considerations

Direct substitutes must match the 42.0802 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Cross-reference with other manufacturers offering identical pinout and electrical characteristics to ensure functional interchangeability without PCB redesign.