18QHTF21-75.900-OE

Overview

The 18QHTF21-75.900-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 75.9 MHz and utilizes LVCMOS output logic. The device is designed for surface mount applications, featuring a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. It supports a supply voltage range including 1.8V and includes an enable/disable control function. The component is rated for an operating temperature range of -40°C to 85°C.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes hardware enable/disable control functionality
• Utilizes a compact 4-SMD no-lead surface mount package

Applications

• General purpose clock signal generation in embedded systems
• Timing reference sources for consumer electronics
• Industrial control system clock distribution

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to prevent assembly errors. Cross-reference the datasheet for pinout configuration to guarantee correct orientation during placement.

Selection Notes

Select this component when a precise 75.9 MHz timing source is required within a space-constrained design. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the -40°C to 85°C temperature range for industrial or automotive environments. The enable/disable feature allows for power management optimization in battery-operated devices.

Part Context

This oscillator belongs to the Mercury Electronics 18QHTF21 series, which focuses on low-profile surface mount solutions. The series typically offers various frequency options within a standardized small outline package. This specific model provides a high-frequency option optimized for modern high-speed digital interfaces requiring stable clock signals.

Replacement Considerations

Direct substitutes must match the 75.9 MHz frequency, LVCMOS output type, and 4-SMD no-lead package dimensions. Verify that alternative manufacturers offer compatible enable/disable pin configurations. Ensure the replacement part meets the same -40°C to 85°C operating temperature specifications.