18QHTF21-12.7281-PD

Overview

The 18QHTF21-12.7281-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.7281 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby function for power down capabilities. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports low voltage operation at 1.8V
• Includes standby mode for power management
• Utilizes LVCMOS output logic interface

Applications

• General clock signal generation
• Embedded system timing references
• Portable electronic devices requiring low power consumption

Procurement Notes

Verify the specific frequency suffix matches the required 12.7281 MHz specification. Confirm the 1.8V supply voltage requirement aligns with the target circuit design. Ensure the 4-SMD no-lead package footprint fits the PCB layout constraints. Check for any specific RoHS compliance documentation if required by project standards.

Selection Notes

Select this component when a precise 12.7281 MHz clock source is needed with minimal power consumption. The LVCMOS interface ensures compatibility with standard digital logic families. The small form factor makes it suitable for space-constrained designs. Consider the operating temperature range requirements against the datasheet specifications before finalizing the selection.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies within a standardized 2.0x1.6mm package. The '-PD' suffix typically indicates power-down functionality. Mercury Electronics specializes in quartz-based frequency control products, providing reliable timing solutions for industrial and consumer applications.

Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with identical pinout and electrical characteristics but different frequencies, such as 18QHTF21-12.300-PD or 18QHTF21-51.200-PD, provided the frequency difference is acceptable for the application.