18QHTF21-86.943-PD

Overview

The 18QHTF21-86.943-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 86.943 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Feature Summary

• Supports Standby (Power Down) mode for power management
• Utilizes LVCMOS output logic interface
• Compact 4-SMD No Lead surface mount package

Applications

• General purpose clock signal generation
• Embedded system timing references
• Digital circuit synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a precise 86.943 MHz clock source is required for low-voltage digital circuits. The choice is driven by the need for LVCMOS compatibility and the integration of a power-down feature to reduce standby current consumption. Consider the small form factor suitable for space-constrained designs requiring reliable quartz-based timing.

Part Context

This part belongs to the 18QHTF21 series of SMD oscillators from Mercury Electronics. The series offers various frequencies within the standard range, all sharing similar electrical characteristics and package types. The 'PD' suffix indicates the inclusion of a power-down pin functionality, distinguishing it from non-stanby variants within the same product family.

Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical frequency specifications, such as those from the same manufacturer line. Cross-brand replacements must match the 86.943 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions to ensure functional compatibility.