18QHTF21-26.66875-PD

Oscillators Overview

The 18QHTF21-26.66875-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 26.66875 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down control feature. It is housed in a compact 4-SMD, no-lead package, designed for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated standby or power-down control functionality
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• General purpose clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Oscillators Procurement Notes

Verify the specific part number suffix against manufacturer documentation to confirm the exact electrical characteristics and pinout configuration. Ensure that the required operating temperature range and load capacitance specifications align with the target application design requirements before finalizing procurement decisions.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output interface. The inclusion of a power-down feature makes it suitable for battery-powered or energy-efficient designs. Confirm that the 4-SMD no-lead footprint matches the PCB layout constraints.

Oscillators Part Context

This model belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequency options within a standardized small outline package. The 'PD' suffix indicates the presence of a power-down or standby control input distinct from enable/disable variants.

Oscillators Replacement Considerations

Direct substitutes must match the 26.66875 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify that any alternative component supports the same standby control functionality and meets identical thermal and electrical specifications.