18QHTF21-49.090909-PD

Overview

The 18QHTF21-49.090909-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 49.090909 MHz with an LVCMOS output logic level. 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 7.0 mm length by 5.0 mm width.

Feature Summary

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

Applications

• General clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific part number suffix to ensure compatibility with required frequency and package specifications. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the LVCMOS output logic matches the receiving component inputs. Check for any specific environmental ratings if operating outside standard conditions.

Selection Notes

Select this component when a precise 49.090909 MHz clock source is required for low-power applications. The 1.8V supply requirement makes it suitable for modern portable electronics. Consider the 7.0x5.0mm footprint for PCB layout constraints. The power-down feature aids in battery life extension for devices with intermittent usage patterns.

Part Context

This oscillator belongs to the 18QHTF series from Mercury Electronics, designed for surface-mount applications. The series typically offers various frequencies within a standardized package format. Mercury Electronics has established itself as a manufacturer of frequency control products, providing components for diverse electronic industries.

Replacement Considerations

Direct substitutes may include other 49.090909 MHz oscillators with identical 1.8V LVCMOS outputs and compatible 7.0x5.0mm footprints. Verify pinout compatibility before substitution. Alternative manufacturers should be evaluated based on similar electrical characteristics and thermal performance.