18QHTF21-69.3755-PD

Overview

The 18QHTF21-69.3755-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 69.3755 MHz and utilizes LVCMOS output logic for digital signal interfacing. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby power-down mode to conserve energy when inactive. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm, suitable for space-constrained surface-mount assembly.

Feature Summary

• LVCMOS output logic for direct digital interface compatibility
• Integrated standby power-down functionality for energy efficiency
• Compact 4-SMD no-lead surface-mount package design

Applications

• Consumer electronics requiring precise timing signals
• Portable devices utilizing low-voltage digital circuits
• Communication equipment needing stable clock sources

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to ensure correct output type and voltage levels. Confirm that the 'PD' designation aligns with required power-down capabilities. Cross-reference package dimensions and lead-free status with assembly specifications. Ensure environmental compliance data matches project requirements before finalizing procurement orders.

Selection Notes

Select this component when a 1.8V supply voltage and LVCMOS outputs are mandatory. Consider the 2.0x1.6mm footprint for tight board layout constraints. Evaluate the need for power-down features if battery life optimization is critical. Compare operating temperature ranges against the intended application environment to ensure reliability under thermal stress conditions.

Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of standard XO oscillators. The series offers various frequencies and voltage options within a consistent small outline package format. The model number indicates specific electrical characteristics including the 1.8V supply and power-down feature set defined by the manufacturer's coding system.

Replacement Considerations

Direct substitutes must match the 69.3755 MHz frequency, 1.8V supply, and LVCMOS output. Verify pinout compatibility and package dimensions (2.0x1.6mm) for seamless integration. Check equivalent performance metrics such as phase noise and stability if replacing with components from other manufacturers.