18QHTF21-35.238-PD

Oscillators Overview

The 18QHTF21-35.238-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 35.238 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Oscillators Feature Summary

• LVCMOS output logic interface
• Standby power down capability
• Compact 4-SMD no lead surface mount package

Oscillators Applications

• General clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Ensure the 1.8V supply rail stability meets the oscillator specifications. Confirm that the 4-SMD footprint matches the PCB layout constraints. Cross-reference the manufacturer datasheet for absolute maximum ratings to prevent operational damage during integration.

Oscillators Selection Notes

Select this component when a precise 35.238 MHz clock source is required with low power consumption. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the 1.8V operating voltage constraint and the need for standby functionality in battery-powered or energy-efficient designs. Verify thermal performance within the specified operating temperature range.

Oscillators Part Context

This part belongs to the Mercury Electronics SMD oscillator series, specifically designed for space-constrained applications. The 'PD' suffix indicates the inclusion of a power-down control feature. The 18QHTF21 series offers various frequency options within a standardized 2.0x1.6 mm package, providing consistency across different clock frequencies while maintaining a small form factor.

Oscillators Replacement Considerations

Direct substitutes include other 35.238 MHz LVCMOS oscillators in a 4-SMD 2.0x1.6mm package from compatible manufacturers. Ensure equivalent electrical parameters such as supply voltage, output swing, and current consumption are matched. Verify mechanical compatibility and pinout alignment if replacing with non-identical parts.