18QHTF21-74.350-OE

Overview

The 18QHTF21-74.350-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 74.35 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications.

Feature Summary

• Standard XO configuration with LVCMOS output
• Integrated enable and disable functionality
• Compact 4-SMD no lead surface mount package

Applications

• General purpose clock signal generation
• Digital system timing references
• Embedded controller clock sources

Procurement Notes

Verify the specific suffix against official documentation to confirm exact electrical tolerances and pinout configurations. Ensure the selected variant matches the required operating temperature range and load capacitance specifications for the target circuit design before finalizing procurement orders.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside precise frequency stability. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the small form factor for space-constrained PCB layouts requiring reliable surface-mount assembly.

Part Context

This part belongs to the 18QHTF series of oscillators from Mercury Electronics. The series offers various frequency options within a standardized footprint. The 74.35 MHz variant provides a specific clock rate for systems requiring this exact timing reference without additional frequency multiplication.

Replacement Considerations

Direct substitutes include other 18QHTF series parts with identical pinouts and voltage levels but different frequencies, such as 18QHTF21-74.500-OE. Cross-referencing datasheets is essential to ensure compatible output drive strength and loading conditions.