18QHTF21-7.00375-PD

Overview

The 18QHTF21-7.00375-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 7.00375 MHz and utilizes LVCMOS output logic. The device is powered by a 1.8V supply voltage and features a Standby function for power-down control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Integrates LVCMOS output logic for direct digital interface compatibility
• Includes standby capability to reduce power consumption during idle states
• Utilizes a leadless surface-mount package for automated assembly

Applications

• Timing and clock generation in electronic devices
• Synchronization circuits requiring precise frequency references
• Embedded systems utilizing low-voltage digital interfaces

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application environment before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD no-lead footprint matches the PCB land pattern design to guarantee proper solder joint formation and mechanical stability during operation.

Selection Notes

Select this component when a 7.00375 MHz reference signal is required within a low-voltage 1.8V system architecture. The choice is appropriate for designs prioritizing small form factors due to the 2.0x1.6mm package size. Consider the LVCMOS output swing levels to ensure compatibility with downstream logic gates without additional buffering.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies while maintaining consistent electrical characteristics and physical dimensions. The 'PD' suffix typically indicates the presence of a power-down or standby pin functionality, distinguishing it from continuous-output variants within the same family.

Replacement Considerations

Direct replacements must match the 7.00375 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify equivalent jitter specifications and standby current limits. Cross-reference with other manufacturers offering identical footprint and electrical parameters to ensure functional interchangeability.