18QHTF21-77.885-OE

Overview

The 18QHTF21-77.885-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 77.885 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 2.0x1.6 mm. The component supports surface mount technology and functions within an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrates enable/disable functionality for efficient power control
• Utilizes LVCMOS output interface for digital compatibility
• Designed for surface mount assembly in small form factors

Applications

• General clock signal generation in electronic circuits
• Timing reference sources for digital systems
• Embedded devices requiring precise frequency standards

Procurement Notes

Verify the specific suffix 'OE' corresponds to the required enable/disable feature and 1.8V supply voltage configuration. Confirm that the 4-SMD no-lead package matches the PCB footprint requirements. Ensure the operating temperature range meets the environmental specifications of the target application before finalizing procurement decisions.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside active power management capabilities. The small 2.0x1.6 mm footprint makes it suitable for space-constrained designs. Consider the LVCMOS output compatibility with downstream logic levels and verify the 77.885 MHz frequency stability against system timing requirements.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequency options while maintaining consistent electrical characteristics and physical dimensions. The 'OE' designation typically indicates the inclusion of an enable pin or control mechanism, distinguishing it from standard continuous-output variants within the same family.

Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical 1.8V supply, LVCMOS output, and enable functionality. Verify that alternative frequencies match the system design needs. Cross-reference package dimensions and pinout configurations to ensure mechanical and electrical compatibility during replacement.