18QHTF21-40.530-PD

Oscillators Overview

The 18QHTF21-40.530-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 40.53 MHz with a frequency stability of 50 ppm. The device utilizes an LVCMOS output interface and supports a supply voltage of 1.8V. Key functional features include a standby or power-down mode for energy management. The component is housed in a compact 4-SMD, No Lead surface mount package, measuring 2.00mm x 1.60mm with a maximum height of 0.079 inches. Maximum supply current is specified at 23 mA.

Oscillators Feature Summary

• Standard XO configuration with LVCMOS output interface
• Integrated standby and power-down functionality
• Compact 4-SMD no-lead surface mount footprint

Oscillators Applications

• Digital signal processing systems requiring precise clocking
• Communication equipment utilizing 40.53 MHz timing references
• Embedded control units needing low-power standby modes

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the PCB layout accommodates the 4-SMD no-lead package dimensions to prevent soldering defects during assembly.

Oscillators Selection Notes

Select this component when a fixed 40.53 MHz frequency is required without external tuning. The LVCMOS output is suitable for direct interfacing with digital logic families operating at 1.8V. Consider the 50 ppm stability limit for applications where environmental temperature variations are controlled. The integrated power-down feature aids in extending battery life for portable devices.

Oscillators Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of surface-mount crystal oscillators. The series offers various standard frequencies tailored for consumer electronics and industrial applications. The 'PD' suffix typically denotes specific packaging or tape-and-reel configurations, though exact definitions require manufacturer confirmation. The series emphasizes small form factors and low power consumption.

Oscillators Replacement Considerations

Direct replacements must match the 40.53 MHz frequency, 1.8V supply, and LVCMOS output type. Verify pin compatibility for the 4-SMD no-lead package. Cross-reference with other manufacturers offering similar SMD oscillators, ensuring identical electrical parameters and mechanical dimensions to maintain board integrity.