18QHTF21-110.540-PD

Overview

The 18QHTF21-110.540-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 110.54 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby (power down) function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic interface
• Integrated standby power down capability
• Standard crystal oscillator configuration

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Procurement Notes

Verify the specific ordering suffix to ensure compatibility with required voltage levels and output types. Confirm that the 4-SMD no-lead package dimensions align with the target PCB footprint. Check datasheet specifications for operating temperature range and load capacitance requirements before integration into final designs.

Selection Notes

Select this component when a 110.54 MHz reference is required with low-voltage operation. Consider the LVCMOS interface compatibility with downstream digital circuits. Evaluate the need for power-down functionality versus continuous operation based on system power constraints and thermal management strategies.

Part Context

This part belongs to the Mercury Electronics SMD oscillator series designed for high-frequency stability. The model number indicates a 1.8V supply variant with a specific frequency code. It complements other members of the family offering different frequencies and voltage options within the same physical footprint.

Replacement Considerations

Direct substitutes must match the 110.54 MHz frequency, 1.8V supply, and LVCMOS output. Verify pinout compatibility for the 4-SMD package. Cross-reference with other manufacturers' offerings ensuring identical electrical parameters and mechanical dimensions for seamless board replacement.