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18QHTF21-27.1631-PD is listed in the Oscillators range at ChipApex. The manufacturer field lists Mercury Electronics Ind. Co. Ltd. Its product description is 27.1631 MHz XO 1.8V 2.0X1.6MM PD. Review the specifications below when checking this part for your BOM.
The 18QHTF21-27.1631-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 27.1631 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby or power-down mode for energy efficiency. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 2.0x1.6mm SMD footprint matches your PCB layout constraints. Check for any specific RoHS compliance documentation if required by your manufacturing standards.
Select this component when a small form factor and low voltage operation are critical. The LVCMOS output is suitable for direct interfacing with most digital logic families. Consider the power-down feature if battery life is a primary concern. Compare against other frequencies in the 18QHTF21 series to ensure the exact 27.1631 MHz rate meets your system's timing needs.
This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies within a consistent 2.0x1.6mm package. These components are designed for applications where space is limited and power efficiency is important. The 'PD' suffix indicates the inclusion of power-down capabilities.
Direct replacements must match the 27.1631 MHz frequency, 1.8V supply, and 2.0x1.6mm package. Verify output logic compatibility. Other Mercury parts in the same series may offer different frequencies but share similar physical characteristics.
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