18QHTF21-75.335-PD

Overview

The 18QHTF21-75.335-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd, designed for precision timing applications requiring stable clock signals. It operates at a fixed frequency of 75.335 MHz and utilizes LVCMOS output logic to ensure compatibility with digital circuits. The device is powered by a single 1.8V supply voltage and features a low-profile 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. A key functional characteristic is its support for Standby mode, allowing for power-down control when the oscillator is not actively required. This configuration makes it suitable for portable electronics and systems where power efficiency and compact form factors are critical design constraints.

Feature Summary

• Supports standby mode for power-down control
• Utilizes LVCMOS output logic for digital interface compatibility
• Operates on a 1.8V single supply voltage

Applications

• Portable electronic devices requiring low power consumption
• Digital communication systems needing precise clock synchronization
• Embedded systems utilizing LVCMOS compatible interfaces

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your target circuit's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout specifications. Check for any specific handling precautions related to surface-mount assembly processes.

Selection Notes

Select this component when a 75.335 MHz frequency is strictly required alongside LVCMOS outputs. Consider the 1.8V supply constraint and the need for standby functionality in your power management strategy. Evaluate the 2.0x1.6mm package size against available board space. Compare performance metrics such as phase noise and stability if available in official documentation to ensure suitability for high-speed data transmission environments.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The manufacturer has a long history in Taiwan's quartz industry, producing various oscillators and resonators. The 'PD' suffix typically indicates specific packaging or processing details within their product line, while the numeric value denotes the exact frequency. This series targets applications demanding reliable timing solutions in compact formats.

Replacement Considerations

Direct substitutes must match the 75.335 MHz frequency, LVCMOS output type, 1.8V supply, and 4-SMD no-lead package dimensions. Verify pinout compatibility and electrical characteristics such as drive level and load capacitance. Cross-reference with other manufacturers offering similar small-form-factor XO components if Mercury Electronics parts are unavailable.