18QHTF21-25.040-PD

Oscillators Overview

The 18QHTF21-25.040-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 25.04 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a standby mode for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby functionality for power reduction
• Utilizes LVCMOS output interface

Oscillators Applications

• General clock signal generation
• Embedded system timing references
• Portable electronic devices requiring low power consumption

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator specifications. Confirm that the 2.0x1.6 mm footprint aligns with your PCB layout constraints. Check for any specific handling instructions regarding the no-lead SMD package during assembly.

Oscillators Selection Notes

Select this component when a precise 25.04 MHz clock source is required in space-constrained applications. The 1.8V operating voltage makes it suitable for modern low-power digital circuits. Consider the LVCMOS compatibility with your target microcontroller or FPGA inputs. The small form factor allows for dense board layouts.

Oscillators Part Context

This part belongs to the QHTF series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The 18QHTF21 variant specifically denotes the 1.8V supply version. The PD suffix indicates the presence of a power-down pin feature.

Oscillators Replacement Considerations

Direct replacements include other 25.04 MHz LVCMOS oscillators in 4-SMD packages. Verify voltage compatibility (1.8V) and pinout definitions. Cross-reference electrical parameters such as phase noise and jitter if critical. Ensure the replacement supports standby modes if power management is required.