18QHTF21-64.667-PD

Overview

The 18QHTF21-64.667-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 64.667 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0 x 1.6 mm. The component is RoHS compliant.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby and power-down functionality
• Utilizes LVCMOS output logic for digital interfacing
• Features a compact surface-mount package design

Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems requiring standard frequencies
• Embedded applications utilizing low-voltage power supplies

Procurement Notes

Verify the specific frequency suffix matches the required 64.667 MHz specification. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD no-lead package footprint corresponds to the PCB layout. Check for RoHS compliance requirements if applicable to the end product regulations.

Selection Notes

Select this component when a precise 64.667 MHz timing source is required within a low-power environment. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the physical size constraints due to the small 2.0x1.6 mm package. Verify thermal operating range requirements against the datasheet specifications before integration.

Part Context

This part belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series offers various standard frequencies tailored for general-purpose timing applications. The 'PD' suffix indicates the inclusion of power-down capabilities. The manufacturer specializes in frequency control products, providing reliable timing solutions for consumer and industrial electronics.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical pinouts and electrical characteristics but different frequency suffixes, such as 18QHTF21-64.000-PD, provided the frequency difference is acceptable for the application.