18QHTF21-17.69472-OE

Oscillators Overview

The 18QHTF21-17.69472-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fundamental frequency of 17.69472 MHz and utilizes LVCMOS output logic for digital signal interfacing. The device is designed for low-voltage applications, functioning with a supply voltage of 1.8V. It features an active-low enable/disable control pin to manage power consumption and operational states. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm, suitable for space-constrained surface-mount assembly.

Oscillators Feature Summary

• LVCMOS output logic provides compatible digital signaling for standard CMOS/TTL loads
• Integrated enable/disable function allows for dynamic power management via control pin
• Compact 4-SMD no-lead package design facilitates high-density PCB layout

Oscillators Applications

• Portable consumer electronics requiring low-power clock sources
• Embedded systems utilizing 1.8V logic families
• Communication modules needing precise frequency reference

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operating specifications. Confirm that the PCB footprint matches the 2.0x1.6mm SMD package dimensions to avoid assembly issues. Cross-reference the enable pin polarity with the system's control logic to ensure correct functionality.

Oscillators Selection Notes

Select this component when a 17.69472 MHz reference is required for 1.8V logic systems. Consider the LVCMOS output type for direct interface with microcontrollers or FPGAs. Evaluate the enable feature if power conservation is critical during idle states. Compare package size constraints against other available oscillator options to ensure compatibility with the mechanical design.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies within a small form factor. The 'OE' suffix likely denotes specific packaging or tape-and-reel configuration details as per manufacturer standards. This model represents a standard XO variant rather than a spread-spectrum or differential output type.

Oscillators Replacement Considerations

Direct substitutes must match the 17.69472 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility, specifically the enable pin location and polarity. Check equivalent electrical parameters such as phase noise and jitter if the application is sensitive to timing precision.