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The 18QHTF21-6.700-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 6.7 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a Standby (Power Down) control function for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.
Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD no-lead package dimensions match the PCB footprint design to prevent assembly issues.
Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS interface. The inclusion of a standby pin makes it suitable for battery-powered systems where power conservation is critical. Verify that the 6.7 MHz frequency meets the specific timing needs of the application circuit.
This part belongs to the Mercury Electronic 18QHTF series of standard XO oscillators. The series offers various frequencies with consistent 1.8V operation and LVCMOS outputs. The 'PD' suffix typically indicates the presence of a power-down or standby control feature, distinguishing it from non-controlled variants within the same package family.
Direct substitutes must maintain the 6.7 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Cross-reference with other manufacturers offering similar low-voltage XO specifications. Ensure pinout compatibility and thermal characteristics match the original design constraints.