18QHTF21-74.1782-OE

Overview

The 18QHTF21-74.1782-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 74.1782 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption during inactive periods. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly processes.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Operates on a 1.8V supply voltage
• Utilizes a 4-SMD no-lead surface mount package

Applications

• General-purpose clock signal generation in electronic circuits
• Timing reference for digital systems requiring 74.1782 MHz
• Embedded devices utilizing LVCMOS-compatible interfaces

Procurement Notes

Verify the specific ordering suffix against official Mercury Electronics documentation to ensure correct output logic and voltage specifications. Confirm that the enable/disable feature aligns with system power management requirements. Check package dimensions against PCB footprint constraints. Ensure supply voltage matches the 1.8V requirement. Validate operating temperature range for the intended environment.

Selection Notes

Select this component when a precise 74.1782 MHz timing source is required within a low-power design. Consider the LVCMOS output compatibility with downstream logic families. Evaluate the need for active power control via the enable pin. Assess space limitations due to the small SMD form factor. Compare against alternative frequencies if system flexibility allows.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which provides various frequency options within the same physical package. The series supports different output voltages and logic types. This specific model targets applications needing a stable high-frequency clock without spread spectrum modulation.

Replacement Considerations

Direct replacements must match the 74.1782 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility before substitution. Alternative parts may require level shifting if output voltage differs.