18QHTF21-49.178555-OE

Overview

The 18QHTF21-49.178555-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 49.178555 MHz and utilizes LVCMOS output logic. The device is designed for surface mount applications, featuring a 4-SMD, No Lead package configuration. It supports a supply voltage of 1.8V and includes an Enable/Disable control function. This component is part of the 18QHTF21 series, which provides precise clock signals for digital circuits requiring stable frequency generation.

Feature Summary

• LVCMOS output logic for standard digital interfacing
• Integrated enable/disable control functionality
• Surface-mount 4-SMD no-lead package design

Applications

• Digital circuit clock signal generation
• Embedded systems timing reference
• Communication equipment synchronization

Procurement Notes

Verify the specific frequency tolerance and operating temperature range requirements against your system specifications before ordering. Confirm that the 1.8V supply voltage aligns with your power architecture. Ensure the 4-SMD footprint matches your PCB layout constraints. Check for any specific handling or storage requirements related to electrostatic discharge sensitivity during procurement and assembly processes.

Selection Notes

Select this component when a precise 49.178555 MHz clock source is required for LVCMOS-compatible digital logic. Consider the 1.8V operating voltage and the need for software-controllable enable/disable features. Evaluate the physical size constraints of the 4-SMD package against available board space. Compare performance characteristics such as phase noise and stability if available in official documentation to ensure suitability for the target application environment.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, a manufacturer specializing in frequency control products. The series typically offers various standard frequencies within a compact SMD form factor. Mercury Electronics has a history of producing quartz-based components, positioning this part within their portfolio of surface-mount oscillators designed for modern electronic devices requiring reliable timing solutions.

Replacement Considerations

Direct substitutes must match the 49.178555 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD package dimensions. Verify pin compatibility and electrical characteristics with alternative manufacturers' offerings. Ensure any replacement maintains the same enable/disable functionality and meets the required operating temperature range for the intended application.