18QHTF21-57.563667-PD

Overview

The 18QHTF21-57.563667-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 57.563667 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features a power-down (Standby) control function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise timing signals in space-constrained electronic systems.

Feature Summary

• LVCMOS output interface for digital circuit compatibility
• Integrated standby mode for power reduction
• Compact surface-mount form factor

Applications

• Consumer electronics timing circuits
• Industrial control systems
• Communication equipment clock generation

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target system design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's specifications to maintain signal integrity. Confirm that the PCB footprint matches the 2.0x1.6mm SMD no-lead package dimensions to avoid assembly issues.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output. The integrated power-down feature makes it suitable for battery-operated devices where standby current consumption is critical. Consider the small 2.0x1.6mm package size if board real estate is limited compared to larger oscillator packages.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, a manufacturer specializing in quartz crystals and oscillators. The series typically offers various frequencies within a standardized 1.8V LVCMOS format. The 'PD' suffix indicates the inclusion of a power-down pin or functionality, distinguishing it from non-power-managed variants in the same physical package family.

Replacement Considerations

Direct replacements must match the 57.563667 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm SMD package. Verify equivalent electrical characteristics such as phase noise and jitter if available in competitor datasheets. Ensure the replacement also supports the standby/power-down function if utilized in the original design.