18QHTF21-68.736-PD

Overview

The 18QHTF21-68.736-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind., Co., Ltd. It operates at a frequency of 68.736 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby (power down) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Supports standby mode to reduce power consumption during idle periods
• Utilizes quartz-based resonance for stable frequency generation

Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded control units needing low-power oscillation sources

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your power architecture. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Cross-reference the datasheet for any specific handling or soldering recommendations provided by Mercury Electronics.

Selection Notes

Select this component when a 68.736 MHz reference is required with LVCMOS compatibility. Consider the 1.8V supply constraint and the need for a power-down feature. Evaluate the 2.0x1.6mm form factor against available board space. Compare performance against other Mercury series oscillators if different voltage levels or package sizes are necessary for the application.

Part Context

This part belongs to the Mercury Electronic Ind., Co., Ltd. oscillator family, which specializes in frequency control products. The manufacturer has been active in the crystal industry since 1973. This specific model represents a standard XO variant designed for surface-mount applications, fitting within their broader portfolio of SMD oscillators and crystals.

Replacement Considerations

Consult official substitution lists from Mercury Electronics for direct replacements. Verify that any alternative maintains the 68.736 MHz frequency, 1.8V operation, and LVCMOS output. Ensure physical compatibility with the 4-SMD no-lead package. Generic equivalents may require verification of electrical parameters and thermal characteristics.