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The 18QHTF21-121.000-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 121.0 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning at 1.8V. It features an enable/disable control pin for power management flexibility. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This surface-mount configuration supports automated assembly processes.
Verify the specific suffix 'OE' against official Mercury Electronics documentation to confirm the enable/disable feature and voltage specifications. Ensure the 121.0 MHz frequency matches the target design requirements. Confirm the 4-SMD no-lead package footprint aligns with PCB layout constraints before finalizing procurement orders.
Select this component when a precise 121.0 MHz clock source is required within space-constrained environments. The 1.8V operating voltage makes it suitable for modern low-power digital logic families. The enable pin provides additional control over power consumption during idle states compared to continuously running oscillators.
This model belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor oscillators. The series typically includes various frequencies such as 8.64 MHz and 96.768 MHz. The 121.0 MHz variant serves high-speed data interface or processor clocking needs within the same physical envelope.
Direct substitutes include other 121.0 MHz LVCMOS oscillators in 2.0x1.6mm packages. Verify electrical parameters such as supply voltage and output swing. Check if the replacement part offers similar enable/disable functionality and phase noise characteristics.