18QHTF21-75.8005-PD

Overview

The 18QHTF21-75.8005-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 75.8005 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning with a supply voltage of 1.8V. It features a standby mode that allows for power-down functionality to reduce energy consumption during idle periods. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly processes.

Feature Summary

• LVCMOS output interface for digital signal compatibility
• Integrated standby capability for power management
• Compact surface-mount package design

Applications

• General-purpose clock generation in embedded systems
• Timing reference for digital logic circuits
• Consumer electronics requiring low-power oscillators

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm the 4-SMD package dimensions fit within your PCB footprint constraints. Check for any specific operating temperature range limitations defined in the official datasheet for your application environment.

Selection Notes

Select this component when a precise 75.8005 MHz timing source is required with minimal power consumption. The LVCMOS output is suitable for direct interfacing with standard digital inputs. Consider the 1.8V operation if your system prioritizes low voltage efficiency. The no-lead package aids in automated assembly but requires appropriate soldering profile adherence.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency control solutions. The '18' prefix typically indicates the 1.8V supply voltage, while 'QHTF' denotes the specific series characteristics. The '-PD' suffix confirms the inclusion of power-down functionality. This model is distinct from other frequencies in the same package family, such as the 6.000 MHz variant.

Replacement Considerations

Direct substitutes must match the 75.8005 MHz frequency, 1.8V LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical specifications with alternative manufacturers. Cross-reference with other Mercury models like 18QHTF21-75.355-PD only if frequency differences are acceptable.