18QHTF21-85.400-OE

Overview

The 18QHTF21-85.400-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 85.4 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features enable/disable functionality for power management. 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 via the OE pin
• Utilizes LVCMOS output logic for digital interfacing
• Designed in a small form factor surface mount package

Applications

• General purpose clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific suffix 'OE' to confirm the presence of the enable pin functionality, as this distinguishes it from standard variants without control inputs. Ensure the operating temperature range meets the application requirements. Confirm that the 1.8V supply voltage aligns with the target system's power rails before procurement.

Selection Notes

Select this component when an LVCMOS interface is required alongside power management capabilities. The 2.0x1.6 mm footprint is suitable for space-constrained designs. Consider the 85.4 MHz frequency requirement specifically, as oscillator frequencies are fixed per part number. Verify compatibility with the host device's input voltage levels.

Part Context

This model belongs to the Mercury Electronics XO series, which includes various frequencies and packages. The 18QHTF21 prefix indicates the specific series characteristics, while the numeric suffix denotes the exact frequency. Similar parts include the -PD variant, which may differ in packaging or specifications.

Replacement Considerations

Direct substitutes must match the 85.4 MHz frequency, 1.8V supply, and LVCMOS output. Check for equivalent enable pin functionality. Cross-reference with other Mercury Electronics models in the same series for mechanical compatibility.