18QHTF21-27.142-PD

Oscillators Overview

The 18QHTF21-27.142-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 27.142 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes standby (power down) functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Oscillators Feature Summary

• LVCMOS output interface for digital signal compatibility
• Integrated standby mode for power management
• Compact surface-mount packaging design

Oscillators Applications

• General purpose clock generation in embedded systems
• Digital signal processing circuits requiring precise timing
• Communication modules utilizing standard frequency references

Oscillators 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 to guarantee proper soldering and mechanical stability during assembly processes.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard 27.142 MHz reference frequency. The LVCMOS output is suitable for direct interfacing with digital logic families without additional level shifting. Consider the standby feature if power efficiency during idle states is a critical design parameter for the target application environment.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a small form factor. The 'PD' suffix typically indicates the presence of a power-down or standby control function, distinguishing it from continuous oscillation variants. This series is designed for applications demanding reliable timing sources in space-constrained electronic devices.

Oscillators Replacement Considerations

Direct substitutes include other 27.142 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications such as phase noise and jitter before substitution. Cross-reference with similar Mercury models like the 3QHTF21 series if voltage levels differ.