18QHTF21-91.500-PD

Overview

The 18QHTF21-91.500-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 91.5 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a Standby (Power Down) function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is designed for applications requiring precise timing signals within portable electronic systems.

Feature Summary

• Supports Standby mode for power reduction
• Compact surface-mount package design
• LVCMOS output compatibility

Applications

• Battery-powered portable devices
• Consumer electronics timing circuits
• Communication equipment signal generation

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this model when a 91.5 MHz clock signal is required with low voltage operation. Consider the 1.8V supply constraint and the availability of standby functionality for power-sensitive designs. Evaluate the small 2.0x1.6mm footprint against available board space. Compare performance metrics such as phase noise and stability if high-precision timing is critical for the application.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies in a standardized small outline package. The series is characterized by its low voltage operation and integrated standby control. Similar models in the lineup include different frequency variants like 51.2 MHz or 68.665 MHz, sharing the same physical dimensions and electrical interface characteristics.

Replacement Considerations

Direct substitutes may include other 91.5 MHz LVCMOS oscillators in a 4-SMD no-lead package with 1.8V operation. Verify pinout compatibility and thermal characteristics when cross-referencing with competitors. Ensure the replacement part supports the same standby control mechanism to maintain system power management functionality.