18QHTF21-81.0755-PD

Overview

The 18QHTF21-81.0755-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 81.0755 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports standby mode for power down capability
• Utilizes LVCMOS output logic interface
• Compact 4-SMD no lead surface mount package

Applications

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

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a precise 81.0755 MHz clock source is required with low voltage operation. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the standby feature if power management is critical. Verify that the operating temperature range meets the environmental conditions of the intended deployment scenario.

Part Context

This part belongs to the QHTF series of surface mount oscillators from Mercury Electronics. The series offers various frequencies and voltage options within small form factors. The 'PD' suffix indicates the inclusion of power down functionality. This model specifically targets applications requiring stable clock signals in space-constrained designs.

Replacement Considerations

Direct substitutes must match the 81.0755 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Check datasheets for equivalent parts from other manufacturers ensuring identical pinout and electrical characteristics to maintain compatibility without redesign.