18QHTF21-65.170-PD

Overview

The 18QHTF21-65.170-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 65.170 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is designed for applications requiring precise timing signals within space-constrained electronic systems.

Feature Summary

• Integrates LVCMOS output interface for digital circuit compatibility
• Supports standby mode to reduce power consumption during idle periods
• Utilizes surface-mount packaging for automated assembly processes

Applications

• General clock signal generation for embedded systems
• Timing reference for data communication interfaces
• Power supply monitoring circuits requiring stable frequency sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target system design before procurement. Confirm that the 1.8V supply voltage aligns with the available power rails in the application board. Ensure the 4-SMD no-lead package footprint matches the PCB layout guidelines provided in the official datasheet to prevent soldering defects.

Selection Notes

Select this model when a low-voltage 1.8V operation is mandatory for the system architecture. The choice is appropriate for designs prioritizing minimal physical footprint due to the small 2.0x1.6mm package size. Consider the LVCMOS output swing limits to ensure compatibility with downstream logic levels without additional buffering components.

Part Context

This component belongs to the 18QHTF21 series from Mercury Electronics, which focuses on miniature oscillators. The series typically offers various frequency options within a standardized form factor. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from continuous-operation variants within the same product line.

Replacement Considerations

Direct substitutes must match the 65.170 MHz frequency, 1.8V supply, and LVCMOS output type. Verify pin compatibility for the 4-SMD no-lead configuration. Alternative models from other manufacturers require careful evaluation of thermal characteristics and frequency stability specifications to ensure functional equivalence.