18QHTF21-64.2178-OE

Overview

The 18QHTF21-64.2178-OE is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 64.2178 MHz and utilizes LVCMOS output logic. The device is designed for low voltage operation at 1.8V and includes enable/disable functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports LVCMOS output logic for standard digital interface compatibility
• Features integrated enable and disable control capabilities
• Designed for low voltage operation at 1.8V supply
• Utilizes a compact surface-mount package format

Applications

• General clock signal generation in electronic circuits
• Data communication interfaces requiring precise timing
• Embedded systems utilizing standard logic levels

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Check for any specific ordering suffixes required by the manufacturer for lead-free or tape-and-reel configurations.

Selection Notes

Select this component when a 64.2178 MHz clock source is required with LVCMOS outputs. Consider the 1.8V operating voltage to ensure compatibility with low-power logic families. Evaluate the small 2.0x1.6mm package size for space-constrained designs. Verify that the enable/disable feature meets your power management needs.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies within a standardized small outline package. These components are commonly used in applications requiring stable clock signals for microprocessors, memory, and communication peripherals.

Replacement Considerations

Direct substitutes may include other 64.2178 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications such as phase noise and jitter before substitution.