18QHTF21-26.500-PD

Oscillators Overview

The 18QHTF21-26.500-PD is a 26.5 MHz crystal oscillator manufactured by Mercury Electronic Ind., Co., Ltd. It operates on a 1.8V supply voltage and features LVCMOS output logic. The device is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. It includes a power-down (Standby) control function to reduce consumption. The unit supports an operating temperature range of -40°C to +85°C.

Oscillators Feature Summary

• LVCMOS output logic for standard digital interfacing
• Integrated power-down control capability
• Compact surface-mount form factor

Oscillators Applications

• Battery-powered portable devices
• General-purpose clock signal generation
• Digital circuit timing references

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before ordering. Confirm that the 1.8V supply rail is stable within the specified limits. Ensure the PCB footprint matches the 2.0x1.6 mm SMD package dimensions precisely to avoid assembly issues.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS interface. The small 2.0x1.6 mm package makes it suitable for space-constrained designs. Consider the power-down feature if energy efficiency during idle states is a priority for the application.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies and voltages. The 'PD' suffix indicates the inclusion of a power-down pin or function. Similar parts in the series include variants like 18QHTF21-50.000-PD and 18QHTF21-51.200-PD, differing primarily in frequency and potentially voltage options.

Oscillators Replacement Considerations

Direct substitutes must match the 26.5 MHz frequency, 1.8V voltage, LVCMOS output, and 2.0x1.6 mm package. Verify compatibility with other series members such as 18QHTF21-24.57696-PD only if frequency differences are acceptable.