18QHTF21-91.875-PD

Overview

The 18QHTF21-91.875-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 91.875 MHz and utilizes LVCMOS output logic. The device is designed for operation with a supply voltage of 1.8V and features a standby or power-down mode capability. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise clock signals.

Feature Summary

• Supports low-voltage LVCMOS output logic for digital interface compatibility
• Includes standby functionality to reduce power consumption during idle periods
• Utilizes a leadless SMD package design for automated surface-mount assembly

Applications

• Digital signal processing systems requiring stable clock sources
• Communication equipment utilizing high-frequency timing references
• Embedded systems needing low-power oscillators with standby modes

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your board's power rails. Ensure the 4-SMD no-lead footprint matches your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided in the official datasheet to ensure reliable assembly and long-term performance.

Selection Notes

Select this component when a 91.875 MHz clock signal is required with LVCMOS outputs. Consider the 1.8V operating voltage and standby feature for power-sensitive designs. Evaluate the 4-SMD package size against available board space. Compare stability specifications if tighter tolerances are needed for your application environment.

Part Context

This part belongs to the QHTF series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The '18' prefix indicates the 1.8V supply variant. These oscillators are designed for general-purpose timing applications where moderate stability and low cost are prioritized over ultra-high precision.

Replacement Considerations

Direct substitutes may include other 91.875 MHz LVCMOS oscillators in similar packages. Verify pinout compatibility and electrical parameters such as current consumption and rise/fall times. Cross-reference with Mercury's own product line for updated revisions or alternative voltage options if system requirements change.