18QHTF21-69.948-OE

Overview

The 18QHTF21-69.948-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a frequency of 69.948 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features an enable/disable control pin for power management flexibility. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm. The component supports surface mount mounting types and operates within a temperature range of -40°C to 85°C.

Feature Summary

• Standard XO configuration with LVCMOS output logic
• Integrated enable/disable functionality for power control
• Compact 4-SMD no lead surface mount package

Applications

• General clock signal generation in embedded systems
• Timing reference for digital circuits requiring 1.8V operation
• Consumer electronics utilizing surface mount technology

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD package footprint matches your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards. Validate the enable/disable pin logic levels with your microcontroller or driver interface.

Selection Notes

Select this component when a precise 69.948 MHz timing source is required for low-voltage applications. Consider the LVCMOS output compatibility with your downstream logic families. Evaluate the thermal performance within the specified -40°C to 85°C range for your operating environment. Assess the space constraints to ensure the 2.0x1.6 mm package fits your design. Compare power consumption metrics if battery life is a critical factor.

Part Context

This oscillator belongs to the Mercury Electronics Ind. Co. Ltd SMD Oscillator series, specifically designed for high-frequency timing applications. The manufacturer specializes in quartz crystals and oscillators, offering various packages and frequencies. This model represents a standard XO variant suitable for general-purpose clocking needs in modern electronic devices.

Replacement Considerations

Direct substitutes include other 69.948 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Verify electrical parameters such as supply voltage, current consumption, and output swing. Ensure mechanical dimensions and pinout configurations are identical to avoid PCB redesign. Check frequency stability specifications to maintain system timing accuracy.