18QHTF21-81.920-OE

Overview

The 18QHTF21-81.920-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 81.92 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports enable and disable control functionality for power management
• Utilizes LVCMOS output logic for digital interface compatibility
• Operates on a low voltage supply of 1.8V

Applications

• General clock signal generation in embedded systems
• Timing reference for digital communication interfaces
• Clock source for microcontrollers and processors requiring 1.8V operation

Procurement Notes

Verify the specific suffix OE indicates the enable/disable feature when sourcing replacements. Confirm the operating temperature range and load capacitance requirements match the target circuit design. Ensure the 4-SMD no-lead package footprint aligns with the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a precise 81.92 MHz clock signal is required with active power control capabilities. The 1.8V supply requirement makes it suitable for modern low-voltage digital circuits. Consider the small 2.0x1.6 mm package size for space-constrained designs. Verify that the LVCMOS output swing is compatible with the input thresholds of the downstream logic devices.

Part Context

This part belongs to the QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The 18QHTF21 variant specifically denotes the 1.8V supply version. The TF218 equivalents listed in archives refer to different voltage variants within the same physical package family.

Replacement Considerations

The 3QHTF21-81.920-OE is a documented equivalent offering the same frequency and form factor but operates at 3.3V instead of 1.8V. Direct substitution requires verifying voltage level compatibility with the host circuitry to prevent damage or malfunction.