18QHTF21-39.9958-PD

Oscillators Overview

The 18QHTF21-39.9958-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 39.9958 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6mm. This component is designed for applications requiring precise timing signals within low-power electronic systems.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby and power-down functionality to reduce power consumption
• Utilizes a surface-mount 4-SMD no-lead package for space-constrained designs

Oscillators Applications

• Digital signal processing circuits
• Communication equipment timing references
• Embedded system clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply voltage aligns with your system's power rails. Confirm that the 4-SMD package footprint matches your PCB layout constraints. Check for any specific operating temperature range limitations defined in the official datasheet for your application environment.

Oscillators Selection Notes

Select this model when a 39.9958 MHz clock signal is required with LVCMOS compatibility. Consider the 1.8V operating voltage and power-down capability for battery-operated devices. Evaluate the 2.0x1.6mm package size against available board space. Compare performance metrics such as phase noise and stability if high-precision timing is critical for the target application.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies in a small SMD form factor. The series is characterized by low power consumption and standard LVCMOS outputs. Mercury Electronics is a established manufacturer of frequency control products, providing quartz-based solutions for global electronics markets.

Oscillators Replacement Considerations

Direct substitutes must match the 39.9958 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical specifications before substitution.