18QHTF21-121.000-PD

Overview

The 18QHTF21-121.000-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 121 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down feature for energy management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm. The component supports an operating temperature range suitable for general electronic applications.

Feature Summary

• Supports low voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic

Applications

• Battery-powered portable devices
• General purpose clock signal generation
• Embedded systems requiring low power consumption

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 no-lead package footprint matches your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards. Always refer to the official datasheet for precise electrical characteristics and handling instructions.

Selection Notes

Select this component when a 121 MHz clock source is required with minimal power consumption. The 1.8V supply voltage makes it suitable for modern low-voltage digital circuits. The integrated power-down feature allows for extended battery life in portable applications. Consider the small 2.0x1.6 mm package size for space-constrained designs. Ensure compatibility with LVCMOS interfaces in your target system.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a compact SMD form factor. The series is designed for applications requiring stable clock signals with low power usage. Mercury Electronics has been a pioneer in the crystal industry since 1973, providing a range of frequency control products including crystals, TCXOs, and oscillators.

Replacement Considerations

Direct substitutes may include other 121 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and thermal performance when considering alternatives. Ensure that any replacement part meets the same frequency stability and phase noise specifications as the original component.