18QHTF21-49.248-PD

Overview

The 18QHTF21-49.248-PD is a standard LVCMOS crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 49.248 MHz with a supply voltage of 1.8V. The component features a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. It supports a Standby (Power Down) function for energy management. The device is designed for surface-mount applications and complies with RoHS standards.

Feature Summary

• Provides stable 49.248 MHz timing signals via LVCMOS output logic
• Integrates a standby mode to reduce power consumption during idle periods
• Utilizes a miniature 4-SMD no-lead package for efficient board space utilization

Applications

• Digital signal processing circuits requiring precise clock synchronization
• Communication systems utilizing 49.248 MHz carrier or sampling frequencies
• Embedded microcontroller boards operating at 1.8V logic levels

Procurement Notes

Verify the exact suffix against manufacturer documentation to confirm pinout and electrical tolerances. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions. Confirm that the 1.8V supply rail is stable within specified limits to maintain frequency accuracy. Check for RoHS compliance requirements specific to the target assembly process.

Selection Notes

Select this model when a low-profile 1.8V LVCMOS oscillator is required for 49.248 MHz applications. The integrated power-down feature makes it suitable for battery-operated devices. Compare physical dimensions against available board real estate. Ensure the load capacitance requirements of the host circuit align with the oscillator's internal specifications.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystals and oscillators. The series offers various frequencies and packages tailored for consumer electronics and industrial timing needs. The 18QHTF21 line emphasizes small form factors and low power consumption.

FAQ

Does the 18QHTF21-49.248-PD support power saving modes?

Yes, the datasheet indicates that this oscillator includes a Standby (Power Down) function to manage power usage.

What is the output logic type for this oscillator?

The component utilizes LVCMOS (Low Voltage Complementary Metal-Oxide-Semiconductor) output logic compatible with 1.8V systems.