18QHTF21-119.930-OE

Overview

The 18QHTF21-119.930-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 119.93 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component is designed for precision frequency generation in electronic applications requiring stable clock signals.

Feature Summary

• Produces a stable 119.93 MHz signal using crystal resonance technology
• Features LVCMOS output logic compatible with low-voltage digital circuits
• Supports active enable and disable control via the supply pin
• Utilizes a small surface-mount package suitable for space-constrained designs

Applications

• Precision timing reference for high-speed data communication interfaces
• Clock source for embedded processors and microcontrollers
• Frequency generation for network equipment and telecommunications systems

Procurement Notes

Verify the specific suffix OE against official Mercury Electronics documentation to confirm exact electrical tolerances and temperature range specifications. Ensure the 1.8V supply requirement aligns with target system power rails. Confirm package compatibility during PCB layout review. Cross-reference part numbers with authorized distributors to avoid counterfeit components. Validate lead times and availability directly with suppliers prior to order placement.

Selection Notes

Select this component when a fixed 119.93 MHz clock signal is required with low power consumption. The 1.8V operating voltage makes it suitable for modern low-voltage logic families. Consider the small 2.0x1.6mm footprint for dense board layouts. Evaluate thermal performance if operating near maximum temperature limits. Compare jitter specifications against application requirements for signal integrity.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal products. The manufacturer has decades of experience in Taiwan's crystal industry. Similar models in the series include variants with different frequencies such as 44.2 MHz or 75.63 MHz, sharing the same package and voltage characteristics but differing in output frequency.

Replacement Considerations

Direct substitutes may include other 119.93 MHz XO devices from Mercury Electronics with identical pinouts and voltage levels. Verify that alternative parts match the LVCMOS output type and 1.8V supply constraints. Check dimensional compatibility for the 4-SMD no-lead package before substitution.