18QHTF21-75.735-PD

Overview

The 18QHTF21-75.735-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 75.735 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) control function to manage power consumption. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes Standby (Power Down) functionality for power management
• Designed for low-voltage operation at 1.8V

Applications

• Digital signal processing systems
• Communication equipment timing references
• Embedded system clock generation

Procurement Notes

Verify the specific ordering suffix PD confirms the Standby (Power Down) control feature against the manufacturer's datasheet. Ensure the 1.8V supply voltage requirement aligns with the target circuit design. Confirm the 4-SMD, No Lead package dimensions match the PCB footprint specifications before procurement.

Selection Notes

Select this component when a 75.735 MHz frequency is required with LVCMOS outputs. The 1.8V operating voltage dictates compatibility with low-power logic families. The Standby feature is essential for applications requiring active power management. Verify thermal performance within the specified operating temperature range.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics Ind. Co., Ltd, which manufactures frequency control products. The series includes various frequencies and voltage options. The -PD suffix specifically denotes the Standby (Power Down) control variant, distinguishing it from OE (Enable/Disable) or standard non-controlled versions.

Replacement Considerations

Direct substitutes must match the 75.735 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and control signal definitions (Standby vs. Enable/Disable) to ensure functional equivalence without circuit redesign.