18QHTF21-72.30417-PD

Overview

The 18QHTF21-72.30417-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 72.30417 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to manage energy consumption. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is suitable for applications requiring precise clock signals in space-constrained electronic designs.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic for digital interfacing
• Available in a small 4-SMD no-lead surface mount package

Applications

• General purpose clock signal generation
• Digital system timing references
• Embedded electronics requiring low-power oscillators
• Compact consumer electronic devices

Procurement Notes

Verify the specific frequency tolerance and operating temperature range against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD package footprint matches the PCB layout requirements. Check for any specific handling instructions regarding the no-lead soldering process.

Selection Notes

Select this component when a 72.30417 MHz clock source is required within a 1.8V logic environment. The choice is driven by the need for a small form factor and power management capabilities via the standby feature. Consider the LVCMOS output compatibility with downstream digital components. Evaluate thermal performance if the application involves high ambient temperatures.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on miniature crystal oscillators. The series typically offers various frequency options within a standardized 2.0x1.6mm package. The 'PD' suffix indicates the inclusion of power-down control, distinguishing it from continuous-operation variants. Mercury Electronics leverages its experience in frequency control products to provide these solutions.

Replacement Considerations

Direct replacements must match the 72.30417 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter. Cross-reference with other manufacturers offering similar low-profile oscillators with standby functions.