18QHTF21-1.700-PD

Overview

The 18QHTF21-1.700-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 1.7 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to manage energy consumption. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm. This component is suitable for applications requiring precise timing signals within low-power electronic systems.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby and power-down functionality for energy management
• Utilizes a compact 4-SMD no-lead surface mount package

Applications

• Low-power portable electronic devices
• Consumer electronics requiring precise timing
• Industrial control systems with space constraints

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 2.0x1.6 mm footprint matches your PCB layout. Check for any specific environmental ratings if operating in extreme conditions. Consult official datasheets for detailed electrical characteristics and reliability data.

Selection Notes

Select this component when a 1.7 MHz clock signal is required with low power consumption. Consider the LVCMOS output level compatibility with downstream logic circuits. Evaluate the physical size constraints to ensure the 2.0x1.6 mm package fits the design. Compare performance metrics such as phase noise and stability against alternative oscillators. Verify the availability of the power-down feature for battery-operated applications.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd., which specializes in quartz crystals and oscillators. The series offers various frequencies and supply voltages. The 'PD' suffix indicates the inclusion of a power-down pin. Mercury Electronic is a Taiwan-based supplier known for timing components including TCXOs and VCTCXOs.

Replacement Considerations

Direct substitutes include other 1.7 MHz LVCMOS oscillators in a 2.0x1.6 mm SMD package with 1.8V operation. Verify equivalent specifications for frequency stability, phase noise, and output drive strength. Ensure the replacement supports the same power-down functionality. Cross-reference pinouts and electrical characteristics to guarantee compatibility.