18QHTF21-7.654321-OE

Overview

The 18QHTF21-7.654321-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 7.654321 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, supporting a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable control functionality
• Compact 4-SMD no-lead surface mount package

Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD package footprint matches your PCB layout. Check for any specific handling or storage requirements related to electrostatic discharge sensitivity.

Selection Notes

Select this component when a precise 7.654321 MHz clock source is required with low voltage operation. Consider the LVCMOS output level compatibility with downstream logic families. Evaluate the enable/disable feature if power management during idle states is necessary. Compare package dimensions against available board space constraints.

Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within a small form factor. It is designed for applications requiring stable clock signals in consumer electronics and industrial equipment where space is limited.

Replacement Considerations

Direct substitutes must match the 7.654321 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter. Cross-reference with other manufacturers' equivalent parts ensuring identical functional parameters.