18QHTF21-105.630-PD

Overview

The 18QHTF21-105.630-PD is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 105.63 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features a Standby (Power Down) 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 high-reliability applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic for standard digital interface compatibility
• Integrated standby mode to reduce power consumption during idle periods
• Compact surface-mount package suitable for space-constrained designs

Applications

• High-speed data communication systems
• Network infrastructure equipment
• Consumer electronics requiring precise clocking

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Ensure that the 1.8V supply voltage aligns with your target circuit's power rails. Confirm that the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure joint integrity.

Selection Notes

Select this oscillator when a 105.63 MHz signal is required with low voltage operation. Consider the LVCMOS output type for direct interfacing with standard logic families. Evaluate the need for power-down functionality if battery life or thermal management is critical. Compare package size against available board real estate to ensure mechanical fit within the assembly.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies and voltages, typically utilizing quartz resonators for stability. The 'PD' suffix indicates the inclusion of a power-down control feature. These components are generally used in portable devices and industrial applications where size and power efficiency are prioritized over higher performance metrics found in VCXO or OCXO types.

Replacement Considerations

Direct replacements must match the 105.63 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as jitter and phase noise. Consult manufacturer cross-reference lists for equivalent parts from other suppliers offering identical specifications.