18QHTF21-49.380-PD

Oscillators Overview

The 18QHTF21-49.380-PD is a standard LVCMOS crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 49.38 MHz with a supply voltage range of 1.8V to 3.3V. The device features a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm and a height of 0.75mm. It supports standby power-down functionality and is designed for applications requiring precise timing signals in space-constrained electronic systems.

Oscillators Feature Summary

• Generates stable 49.38 MHz clock signals using LVCMOS output logic
• Supports dual voltage operation at 1.8V and 3.3V for flexible integration
• Includes standby mode capability to reduce power consumption during idle periods
• Utilizes a small footprint surface-mount package for high-density PCB layouts

Oscillators Applications

• High-speed data communication interfaces requiring precise clock synchronization
• Portable consumer electronics with strict size and power constraints
• Embedded systems utilizing low-voltage microcontrollers and processors
• Industrial control modules needing reliable timing sources in compact enclosures

Oscillators Procurement Notes

Verify the specific operating voltage configuration required for your circuit design, as the component supports both 1.8V and 3.3V levels. Ensure that the PCB land pattern matches the 2.0mm x 1.6mm SMD package dimensions to guarantee proper soldering and mechanical stability. Confirm that the LVCMOS output voltage levels are compatible with the input thresholds of the receiving logic devices to prevent signal integrity issues.

Oscillators Selection Notes

Choose this oscillator when a small form factor and low power consumption are critical priorities. The 49.38 MHz frequency is suitable for specific baud rate generation or clock division requirements. Consider the standby feature if power management is a key design constraint. Evaluate the LVCMOS output compatibility against the target system's logic family before finalizing the selection for optimal performance.

Oscillators Part Context

This component belongs to the 18QHTF21 series from Mercury Electronics, which focuses on miniature crystal oscillators. The series offers various frequencies and package sizes tailored for modern electronics. The 18QHTF21-49.380-PD specifically addresses the need for compact, low-power timing solutions in portable and industrial applications where space is limited.

Oscillators Replacement Considerations

Direct substitutes include other 49.38 MHz LVCMOS oscillators in 2.0x1.6mm packages from manufacturers like Epson, NDK, or SiTime. Verify pinout compatibility and electrical specifications such as load capacitance and drive strength before swapping components to ensure seamless integration without redesigning the PCB layout.