18QHTF21-80.3722-PD

Overview

The 18QHTF21-80.3722-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 80.3722 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down (PD) control function for standby management. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm. The component is designed for applications requiring precise timing signals within low-voltage digital systems.

Feature Summary

• Supports LVCMOS output logic for direct interface with digital circuits
• Includes power-down functionality to reduce current consumption during standby
• Utilizes a small form-factor SMD package suitable for space-constrained designs

Applications

• Digital signal processing systems
• Communication equipment requiring precise clock sources
• Embedded systems with low-voltage microcontrollers

Procurement Notes

Verify the specific ordering suffix 'PD' confirms the power-down feature and 1.8V supply requirement. Ensure the 80.3722 MHz frequency matches the system design specifications. Confirm the 4-SMD no-lead package type aligns with PCB footprint requirements. Check manufacturer datasheets for tolerance and stability parameters before integration.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a power-down capability. The 80.3722 MHz frequency is specific; ensure it meets the target application's clock needs. Consider the 2.0x1.6mm package size for board layout constraints. Compare against other series if higher frequencies or different voltages are needed.

Part Context

This part belongs to the 218 Series of quartz oscillators from Mercury Electronics. The series includes various frequencies and voltage options. The '18' prefix typically indicates the 1.8V supply voltage, while 'QHTF21' denotes the package and series type. The '-PD' suffix specifies the power-down control feature, distinguishing it from standard enable/disable variants.

Replacement Considerations

Direct substitutes may include other 80.3722 MHz LVCMOS oscillators with 1.8V supply and power-down features. Verify pin compatibility and package dimensions (2.0x1.6mm SMD). Check electrical specifications such as jitter and phase noise if critical. Consult manufacturer cross-reference lists for verified alternatives.