18QHTF21-27.4912-PD

Oscillators Overview

The 18QHTF21-27.4912-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 27.4912 MHz with LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function. It is housed in a 4-SMD, No Lead package.

Oscillators Feature Summary

• Supports low voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic for digital interfacing

Oscillators Applications

• General purpose clock generation
• Digital signal processing systems
• Communication equipment timing

Oscillators Procurement Notes

Verify the specific frequency tolerance and phase noise specifications against the official datasheet before integration. Confirm that the 1.8V supply requirement aligns with the target system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB design constraints. Check for any RoHS compliance documentation if required by project standards.

Oscillators Selection Notes

Select this component when a precise 27.4912 MHz clock source is required with low power consumption capabilities. The LVCMOS interface ensures compatibility with standard digital logic families. The integrated standby feature allows for power management strategies in battery-operated or energy-efficient designs. Verify thermal performance within the specified operating temperature range.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies with consistent packaging and electrical characteristics. The PD suffix typically indicates specific packaging or tape-and-reel configuration details as defined by the manufacturer.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical pinouts and 1.8V operation, such as the 18QHTF21-25.000-PD or 18QHTF21-30.000-PD, provided the frequency difference is acceptable. Cross-reference with industry-standard equivalents like SiTime or Epson parts only if pin-compatible and electrically equivalent parameters are confirmed.