18QHTF21-15.9744-PD

Oscillators Overview

The 18QHTF21-15.9744-PD is a 15.9744 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It utilizes LVCMOS output logic and operates at a supply voltage of 1.8V. The device features a Standby (Power Down) function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Oscillators Feature Summary

• Supports LVCMOS output logic for standard digital interfacing
• Includes Standby (Power Down) functionality to reduce power consumption
• Utilizes a small form factor 4-SMD No Lead package

Oscillators Applications

• Portable electronic devices requiring low power operation
• Communication equipment utilizing LVCMOS interfaces
• Embedded systems needing precise clock timing sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the 4-SMD No Lead package footprint matches your PCB layout constraints. Check for any specific RoHS or environmental compliance certifications required by your project standards.

Oscillators Selection Notes

Select this component when a low-profile, surface-mount oscillator with LVCMOS outputs is required. The 1.8V operating voltage makes it suitable for modern low-voltage digital circuits. Consider the Standby feature if power efficiency during idle periods is critical. Ensure the 15.9744 MHz frequency meets the specific timing needs of your application compared to more common frequencies like 16 MHz.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The manufacturer has a history dating back to 1973, focusing on precision timing components. This series typically offers various frequencies within a compact SMD package, catering to consumer electronics and industrial applications requiring reliable clock signals.

Oscillators Replacement Considerations

Direct substitutes may include other 15.9744 MHz LVCMOS oscillators in a 2.0x1.6mm 4-SMD package from manufacturers such as Epson, NDK, or SiTime. Verify pin compatibility and electrical specifications including supply voltage and current consumption. Ensure the replacement supports the same Standby function if power management is required.