3QHM53D0.25-31.250

Oscillators Overview

The 3QHM53D0.25-31.250 is a spread spectrum crystal oscillator (SSXO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 31.25 MHz with a down-spread modulation depth of -0.25%. The device utilizes CMOS output logic and functions within a supply voltage range of 3.3V. It features an enable/disable control pin for power management. The component is housed in a compact 4-pad ceramic surface-mount package measuring 5.0 x 3.2 x 1.2 mm, designed for low electromagnetic interference applications.

Oscillators Feature Summary

• Integrated spread spectrum modulation to reduce electromagnetic interference emissions
• CMOS output interface compatible with standard digital logic levels
• Hardware enable/disable control for active power management
• Low-profile ceramic surface-mount construction

Oscillators Applications

• High-speed data transmission interfaces requiring EMI reduction
• Computer peripheral connections and bus systems
• Telecommunications equipment signal processing
• Industrial control system clock generation

Oscillators Procurement Notes

Verify the specific ordering suffix matches the required frequency tolerance and modulation depth. Confirm the package dimensions align with PCB footprint requirements. Ensure the supply voltage specification meets the target circuit design constraints. Check for RoHS compliance documentation if environmental regulations apply to the final assembly process.

Oscillators Selection Notes

Select this component when low EMI performance is critical for signal integrity. The CMOS output simplifies interface design compared to LVDS or HCSL options. The enable pin allows for dynamic power saving in battery-operated devices. Consider the operating temperature range to ensure reliability under specific environmental conditions.

Oscillators Part Context

This part belongs to the QuikXO series of spread spectrum oscillators from Mercury Electronics. The series focuses on mitigating radiated emissions through frequency dithering. The 3QHM53D variant specifically denotes the SSXO technology with CMOS outputs. It serves as a timing source where spectral spreading is mandated by regulatory standards.

Oscillators Replacement Considerations

Direct substitutes must match the 31.25 MHz frequency, -0.25% spread depth, and 3.3V CMOS specifications. Verify pin compatibility and package dimensions for direct replacement. Cross-reference electrical characteristics such as phase noise and jitter performance to ensure equivalent system behavior.