18QHTF21-90.909-OE

Overview

The 18QHTF21-90.909-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 90.909 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This surface-mount oscillator is engineered for precise timing requirements in electronic circuits.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable control functionality
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose clock signal generation
• Digital circuit timing synchronization
• Embedded system clock sources

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 4-SMD no-lead package dimensions provided in the official datasheet. Check for any specific reflow soldering profile recommendations to ensure component integrity during assembly.

Selection Notes

Select this component when a stable 90.909 MHz clock source is required for LVCMOS-compatible digital logic. The choice is driven by the need for a low-profile surface-mount solution with power management capabilities via the enable pin. Consider the operating temperature range and supply voltage constraints of the application to ensure reliable performance under all expected environmental conditions.

Part Context

This part belongs to the Mercury Electronic SMD oscillator series, which includes various frequencies and package types. The '18' prefix typically indicates the 1.8V supply voltage requirement, while 'QHTF21' denotes the specific package and form factor. The '-OE' suffix may indicate specific ordering or packaging variations defined by the manufacturer. This series is part of Mercury's broader portfolio of quartz-based frequency control products.

Replacement Considerations

Direct substitutes must match the 90.909 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if critical. Cross-reference with other manufacturers offering similar small-form-factor oscillators with enable functions.