18QHTF21-63.7955-OE

Overview

The 18QHTF21-63.7955-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 63.7955 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control pin for power management. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise clock signals in space-constrained electronic systems.

Feature Summary

• Integrates LVCMOS output logic for standard digital interface compatibility
• Features an enable/disable pin for active power management control
• Utilizes a compact 4-SMD no-lead surface mount package design

Applications

• General purpose clock signal generation in embedded systems
• Timing reference for microcontrollers and processors
• Data communication interfaces requiring stable clock sources

Procurement Notes

Verify the specific frequency suffix matches the required 63.7955 MHz specification during procurement. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD no-lead package footprint corresponds to the PCB layout requirements. Check for any specific manufacturing date codes or lot traceability needs if applicable to the production environment.

Selection Notes

Select this component when a low-profile surface mount oscillator is required for 1.8V logic systems. The LVCMOS output ensures direct interfacing with standard digital inputs without additional level shifting. The enable feature allows for dynamic power reduction in battery-operated devices. Consider the thermal characteristics and operating temperature range relative to the intended application environment.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency oscillators. The model number indicates a specific frequency variant within the 18QHTF21 family. These components are widely used in consumer electronics and industrial equipment where reliable timing is essential. The manufacturer has established history in quartz crystal production.

Replacement Considerations

Direct substitutes must match the 63.7955 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify that alternative components support the same enable/disable functionality. Cross-reference pin assignments to ensure electrical compatibility. Consult official manufacturer cross-reference lists for validated replacements.