18QHTF21-19.2156-OE

Oscillators Overview

The 18QHTF21-19.2156-OE is a quartz crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 19.2156 MHz and utilizes LVCMOS output logic. The device is powered by a 1.8V supply voltage and includes enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component belongs to the QHTF series, which offers hermetic ceramic leadless SMD packages suitable for surface mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output interface with enable/disable control
• Hermetic ceramic leadless SMD construction
• Compact 2.0x1.6mm surface mount footprint

Oscillators Applications

• Clock signal generation for digital circuits
• Timing reference for communication interfaces
• Embedded system clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design specifications. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD no-lead package type is compatible with the PCB assembly process and soldering profile used in manufacturing.

Oscillators Selection Notes

Select this oscillator when a low-voltage 1.8V operation is required alongside a standard LVCMOS output. The choice is driven by the need for a small 2.0x1.6mm footprint and hermetic sealing. Consider the enable/disable feature if power conservation during idle states is a design priority. Validate that the 19.2156 MHz frequency matches the system clock requirements.

Oscillators Part Context

This part is a member of the Mercury QHTF series of quartz oscillators. The series provides various frequencies ranging from 1.0 MHz to 200 MHz across different supply voltages. The 18QHTF21 variant specifically denotes the 1.8V supply version within the hermetic ceramic leadless SMD package family, designed for reliable performance in space-constrained electronic assemblies.

Oscillators Replacement Considerations

Direct substitutes must match the 19.2156 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify equivalent electrical characteristics such as phase noise and stability before substitution.