18QHTF21-73.253125-PD

Overview

The 18QHTF21-73.253125-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 73.253125 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features a standby (power down) control mode for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly in space-constrained electronic designs requiring precise timing signals.

Feature Summary

• Provides stable 73.253125 MHz timing signal via LVCMOS interface
• Supports low-voltage operation at 1.8V with power-down capability
• Utilizes compact 4-SMD no-lead surface-mount packaging

Applications

• Timing and frequency control in general electronic devices
• Digital systems requiring precise clock synchronization
• Embedded circuits utilizing LVCMOS-compatible interfaces

Procurement Notes

Verify the exact operating voltage and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail is stable and within specification to ensure oscillator performance. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to avoid assembly issues.

Selection Notes

Select this component when a specific 73.253125 MHz frequency is required for system timing. Consider the 1.8V supply constraint and LVCMOS output compatibility with downstream logic. The standby feature offers power management benefits for battery-operated or energy-efficient applications compared to always-on oscillators.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series typically includes various frequencies and voltage options, such as 25.3125 MHz and 96.768 MHz variants. The suffix -PD indicates the presence of a power-down control function, distinguishing it from models without standby capabilities.

Replacement Considerations

Direct substitutes include other 73.253125 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Verify pinout compatibility and electrical specifications, particularly supply voltage and current consumption, before swapping. Models like 25QHTF21-73.253125-PD may offer similar functionality but require verification of voltage levels.