18QHTF21-40.490496-PD

Oscillators Overview

The 18QHTF21-40.490496-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 40.490496 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down function for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Oscillators Feature Summary

• LVCMOS output interface
• Power-down capability
• Compact surface-mount package

Oscillators Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded microcontroller timing

Oscillators Procurement Notes

Verify the specific ordering suffix to ensure the correct package type and electrical characteristics match the design requirements. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Check for any specific temperature range limitations if operating in extreme environments.

Oscillators Selection Notes

Select this component when a precise 40.490496 MHz reference is required in space-constrained designs. The low profile and small footprint make it suitable for high-density PCB layouts. Ensure the host circuit supports the LVCMOS logic levels and provides adequate current for the 1.8V operation.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The series offers various frequencies and package options, catering to diverse electronic applications requiring stable clock signals.

Oscillators Replacement Considerations

Direct substitutes may include other 40.490496 MHz XO components with identical 1.8V LVCMOS specifications and 2.0x1.6mm SMD packages. Verify pinout compatibility and electrical parameters before substitution.