18QHTF21-10.492-PD

Overview

The 18QHTF21-10.492-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 10.492 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby function for power down control. It is housed in a compact 4-SMD, No Lead surface mount package with dimensions of 0.079 inches in length and 0.063 inches in width. The output current capability is specified at 22mA.

Feature Summary

• Supports standby mode for power management
• LVCMOS output interface compatibility
• Compact surface mount packaging

Applications

• General clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design specifications. Confirm that the 1.8V supply voltage aligns with the system power architecture. Ensure the 4-SMD package footprint matches the PCB layout constraints. Check the operating temperature range suitability for the intended environment. Validate the standby pin functionality if power conservation is required.

Selection Notes

Choose this component when a precise 10.492 MHz reference is needed with low voltage operation. Consider the LVCMOS output swing for direct interfacing with compatible digital logic families. Evaluate the physical size constraints to ensure the 4-SMD package fits within the available board space. Assess the need for power-down capabilities to optimize system energy consumption during idle periods.

Part Context

This part belongs to the Mercury Electronics XO series, which includes various frequencies and voltage options. Similar models like the 18QHTF21-51.200-PD share the same package and voltage characteristics but differ in frequency. The series typically offers standard oscillators for general-purpose applications requiring reliable clock signals in compact electronic devices.

Replacement Considerations

Direct substitutes must match the 10.492 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify electrical parameters such as output current and standby functionality before substitution.