18QHTF21-12.288-PD

Overview

The 18QHTF21-12.288-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.288 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is designed for applications requiring precise timing signals within low-power electronic systems.

Feature Summary

• Supports standby mode for power reduction
• Compact surface-mount footprint
• LVCMOS output compatibility

Applications

• Low-power digital circuits
• Communication modules
• Embedded system clocks

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply voltage aligns with your system's power rails. Confirm that the 4-SMD no-lead package dimensions fit within your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards. Cross-reference the part number suffix to ensure the correct variant is ordered.

Selection Notes

Select this oscillator when a 12.288 MHz clock signal is required for data transmission or processing tasks. Consider the 1.8V operating voltage to ensure compatibility with low-voltage logic families. Evaluate the need for a power-down feature to extend battery life in portable devices. Assess the physical space available on the PCB to accommodate the small 2.0x1.6 mm package size.

Part Context

This component belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The PD suffix typically indicates a specific package or performance grade. These oscillators are commonly used in consumer electronics and industrial control systems where stable timing is critical.

Replacement Considerations

Direct substitutes may include other 12.288 MHz LVCMOS oscillators in a 4-SMD no-lead package. Verify pinout compatibility and electrical specifications such as current consumption and startup time. Ensure the replacement supports the same standby functionality. Check for equivalent temperature ranges and stability ratings.