18QHTF21-59.970-PD

Overview

The 18QHTF21-59.970-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 59.97 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy 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 timing signals within low-voltage digital systems.

Feature Summary

• LVCMOS output logic for standard digital interfacing
• Integrated standby and power-down functionality
• Compact 4-SMD no-lead surface mount package

Applications

• General-purpose clock signal generation
• Low-voltage digital circuit timing
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific operating temperature range limitations required by your application environment to ensure reliable performance.

Selection Notes

Select this component when a 59.97 MHz clock source is required with LVCMOS outputs. Consider the 1.8V operating voltage and the need for a power-down feature. The small 2.0x1.6mm package is suitable for space-constrained designs. Evaluate if the standard XO type meets your phase noise and stability needs compared to TCXO alternatives.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies in a standardized 4-SMD no-lead form factor. The series typically targets cost-sensitive applications requiring basic timing functions. The 'PD' suffix indicates the inclusion of a power-down control pin, distinguishing it from non-configurable variants within the same physical package family.

Replacement Considerations

Direct replacements must match the 59.97 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility, particularly the power-down control pin assignment. Cross-reference with other manufacturers offering similar SMD oscillators, ensuring electrical parameters like current consumption and startup time are comparable.