18QHTF21-64.478-OE

Overview

The 18QHTF21-64.478-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 64.478 MHz and utilizes LVCMOS output logic. 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, designed for surface-mount applications. This component provides precise timing signals suitable for digital circuits requiring stable clock sources within its specified operating parameters.

Feature Summary

• LVCMOS output logic for direct interface with digital systems
• Integrated enable/disable control for power optimization
• Compact 4-SMD no-lead surface mount package design

Applications

• Digital signal processing equipment
• Communication system timing references
• Embedded controller clock generation

Procurement Notes

Verify the specific suffix OE against the manufacturer's current datasheet to confirm exact electrical tolerances and pinout configurations. Ensure compatibility with 1.8V supply rails and LVCMOS input requirements of the target circuit. Cross-reference the 4-SMD package dimensions with PCB footprint libraries to prevent assembly errors during manufacturing integration.

Selection Notes

Choose this oscillator when a 64.478 MHz frequency is required with low-voltage 1.8V operation. The LVCMOS output eliminates the need for external level shifting. Consider the enable/disable feature if power conservation is critical. Verify that the 4-SMD form factor fits the available board space and supports the required thermal dissipation characteristics for the intended environment.

Part Context

Mercury Electronic Ind. Co., Ltd specializes in frequency control products including quartz crystals and oscillators. The 18QHTF21 series represents their standard XO line offering various frequencies. This specific model integrates timing stability with low-power operation, serving as a core component in modern electronic devices requiring precise clock synchronization without complex external circuitry.

Replacement Considerations

Direct substitutes include other 64.478 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Ensure equivalent supply voltage (1.8V) and output logic levels. Verify mechanical footprint compatibility and thermal specifications before substitution.