18QHTF21-1.065-PD

Overview

The 18QHTF21-1.065-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 1.065 MHz and utilizes an LVCMOS output interface. The device is designed for a supply voltage of 1.8V and features a power-down function to reduce consumption during standby modes. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation at 1.8V for energy efficiency
• Includes power-down capability to minimize current draw
• Utilizes LVCMOS output logic levels
• Compact 4-SMD no-lead surface mount package

Applications

• Battery-powered portable electronic devices
• Consumer electronics requiring low-power timing
• Embedded systems with space constraints
• General-purpose digital circuit clocking

Procurement Notes

Verify the specific frequency tolerance and stability specifications against the official datasheet before integration. 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 design guidelines. Check for any RoHS compliance documentation if required for your manufacturing standards.

Selection Notes

Select this component when a low-frequency, low-power clock source is required for compact designs. The 1.8V operating voltage makes it suitable for modern low-voltage logic families. Consider the power-down feature if battery life is a critical constraint. Verify that the 1.065 MHz frequency meets the specific timing requirements of the target application compared to standard frequencies.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options in a small form factor. Mercury Electronics is a Taiwan-based manufacturer specializing in frequency control products including crystals, oscillators, and filters, established since 1973.

Replacement Considerations

Direct substitutes include other 1.065 MHz XO components in 4-SMD packages with 1.8V LVCMOS outputs. Cross-reference with similar series from Mercury or other manufacturers ensuring identical pinout and electrical characteristics. Verify thermal and mechanical compatibility before substitution.