18QHTF21-9.864-OE

Overview

The 18QHTF21-9.864-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 9.864 MHz and utilizes LVCMOS output logic. The device is powered by a 1.8V supply voltage and features an Enable/Disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Includes hardware enable/disable functionality for power management
• Utilizes a low-profile surface-mount package design

Applications

• General purpose clock signal generation
• Embedded system timing references
• Consumer electronics circuit boards

Procurement Notes

Verify the specific frequency suffix matches the required 9.864 MHz specification. Confirm that the 1.8V operating voltage aligns with the target system's power rails. Ensure the 4-SMD no-lead package footprint is compatible with the PCB layout. Check for any specific environmental or reliability certifications if required by the application standards.

Selection Notes

Select this component when a precise 9.864 MHz clock source is needed with low voltage operation. The LVCMOS output is suitable for standard digital logic families. The enable pin allows for dynamic power control. Consider the small 2.0x1.6mm footprint for space-constrained designs requiring reliable quartz-based timing.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The series includes various frequencies such as 8.64 MHz and 75.63 MHz. Mercury has been a pioneer in Taiwan's crystal industry since 1973, offering components like TCXOs and VCTCXOs alongside standard oscillators.

Replacement Considerations

Direct substitutes include other 9.864 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications before substitution.