18QHTF21-10.267-PD

Overview

The 18QHTF21-10.267-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 10.267 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a standby power-down mode for energy efficiency. It is housed in a compact 4-SMD, no-lead package suitable for surface-mount applications. The unit supports an operating temperature range of -40°C to +85°C and maintains a frequency stability of ±50ppm.

Feature Summary

• LVCMOS output logic interface
• Integrated standby power-down mode
• Compact 4-SMD no-lead surface mount package

Applications

• General clock signal generation
• Embedded system timing references
• Consumer electronics circuit boards

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Check for any RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside standard LVCMOS compatibility. The ±50ppm stability is suitable for general-purpose timing rather than high-precision synchronization. Consider the small form factor for space-constrained designs. Evaluate thermal performance within the specified -40°C to +85°C range for your intended environment.

Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series offers various frequencies and voltage options. Mercury Electronic has a long history in quartz crystal manufacturing, providing frequency control products including TCXOs and VCXOs. This specific model represents a standard XO variant optimized for low-power applications.

Replacement Considerations

Direct substitutes must match the 10.267 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical parameters such as current consumption and startup time. Cross-reference with other manufacturers offering similar surface-mount oscillators if availability is an issue.