18QHTF21-75.685-OE

Overview

The 18QHTF21-75.685-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 75.685 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features an Enable/Disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. The component supports an operating temperature range of -40°C to 85°C and maintains a frequency stability of ±50ppm.

Feature Summary

• LVCMOS output interface
• Enable/Disable control functionality
• Compact 4-SMD no lead package

Applications

• General clock signal generation
• Embedded system timing references
• Consumer electronics circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD package footprint matches the PCB layout specifications. Check for any specific ordering suffixes that may alter electrical characteristics or packaging options.

Selection Notes

Select this component when a low-voltage, small-footprint clock source is required for digital logic interfaces. The LVCMOS output is suitable for direct interfacing with standard CMOS inputs. Consider the ±50ppm stability for applications not requiring high-precision timing. The enable/disable feature allows for dynamic power management in battery-operated devices.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies within the same physical package size. The 'OE' suffix typically denotes specific output or packaging variations defined by the manufacturer. These components are designed for space-constrained applications requiring reliable clock signals.

Replacement Considerations

Direct replacements must match the 75.685 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pin compatibility and thermal characteristics. Cross-reference with other manufacturers offering similar SMD XO packages.