18QHTF21-28.339-PD

Oscillators Overview

The 18QHTF21-28.339-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 28.339 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features a power-down mode accessible via a standby control pin. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm by 1.6mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V with LVCMOS compatibility
• Includes a dedicated standby function for power management
• Utilizes a small-footprint surface-mount package design

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Communication systems utilizing standard clock signals
• Embedded controllers needing precise timing references

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply rail is stable and within the specified operating range to ensure reliable oscillator performance. Check the datasheet for the exact pinout configuration to match PCB layout constraints.

Oscillators Selection Notes

Select this component when a 28.339 MHz reference signal is required in space-constrained applications. Ensure the host system supports LVCMOS logic levels and can provide the necessary 1.8V supply current. Consider the thermal characteristics of the 4-SMD package if the operating environment involves high ambient temperatures.

Oscillators Part Context

This model belongs to the Mercury Electronics XO series, which focuses on standard frequency generation for digital circuits. The product line emphasizes miniaturization and energy efficiency, catering to modern portable electronics. The manufacturer has established expertise in quartz-based frequency control solutions since 1973.

Oscillators Replacement Considerations

Direct substitutes include other 28.339 MHz LVCMOS oscillators from Mercury Electronics such as the 18QHTF21-28.339 without the PD suffix if power-down functionality is not needed. Verify package dimensions and pin compatibility before replacing.