18QHTF21-8.100-PD

Overview

The 18QHTF21-8.100-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 8.1 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a Standby (Power Down) function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Feature Summary

• Supports Standby mode for power reduction
• LVCMOS output interface compatibility
• Compact surface-mount form factor

Applications

• Battery-powered portable devices
• General electronic circuits requiring clock signals
• Embedded systems utilizing low-voltage logic

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator specifications. Confirm that the 4-SMD no-lead package footprint aligns with your PCB layout constraints to ensure proper assembly and thermal performance.

Selection Notes

Select this component when a low-profile, low-voltage clock source is required for space-constrained designs. The LVCMOS output ensures compatibility with standard digital logic families operating at 1.8V. Consider the standby feature if power efficiency during idle periods is a critical system requirement.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic, which specializes in quartz crystal frequency control products. The series offers various frequencies within a standardized 2.0x1.6mm package, providing designers with consistent mechanical footprints while allowing flexibility in electrical specifications across different applications.

Replacement Considerations

Direct substitutes include other 8.1 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation, such as the 18QHTF21-8.000-PD or 18QHTF21-51.200-PD if frequency adjustment is permissible. Verify pinout and electrical characteristics match before substitution.