18QHTF21-74.175-PD

Overview

The 18QHTF21-74.175-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 74.175 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. The component is designed for applications requiring precise timing signals within low-voltage digital systems.

Feature Summary

• Supports LVCMOS output logic for standard digital interface compatibility
• Includes standby and power-down functionality to reduce power consumption
• Utilizes a small form factor 4-SMD no lead package design

Applications

• General purpose clock signal generation in embedded systems
• Timing reference for low-voltage digital circuits
• Consumer electronics requiring compact oscillator solutions

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your system design before procurement. Ensure that the 1.8V supply voltage aligns with your target platform's power rails. Confirm that the LVCMOS output swing is compatible with the receiving logic inputs. Check for any specific handling precautions related to the surface mount package type during assembly.

Selection Notes

Select this component when a 74.175 MHz frequency is required alongside a 1.8V supply constraint. The choice is driven by the need for a small footprint suitable for dense PCB layouts. Consider the LVCMOS output level if interfacing with standard CMOS logic families. Evaluate the power-down feature necessity for battery-operated or energy-efficient designs.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on low-profile surface mount oscillators. The series typically offers various frequencies within a standardized package size. Mercury Electronics specializes in quartz crystals and timing components, providing solutions for consumer and industrial markets. This specific model represents a standard XO variant within their portfolio.

Replacement Considerations

Direct substitutes must match the 74.175 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package dimensions. Verify pinout compatibility and electrical characteristics such as rise/fall times and duty cycle. Cross-reference with other manufacturers offering similar SMD oscillators ensuring identical functional parameters.