18QHTF21-82.0025-PD

Overview

The 18QHTF21-82.0025-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 82.0025 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features a power-down function via a standby control input. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby mode for power management
• Utilizes LVCMOS output interface

Applications

• General-purpose clock signal generation
• Digital circuit timing synchronization
• Embedded system clock sources

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply rail stability meets the oscillator's jitter specifications. Ensure the PCB layout accommodates the 2.0x1.6mm footprint and no-lead package soldering profile to guarantee reliable electrical contact and thermal performance during assembly.

Selection Notes

Select this component when a precise 82.0025 MHz reference is required for 1.8V logic systems. Consider the LVCMOS compatibility with downstream digital inputs. Evaluate the need for power-down functionality to meet energy efficiency targets. Compare physical size constraints against alternative packages if space is limited, noting the 2.0x1.6mm form factor.

Part Context

This part belongs to the QHTF series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers standard frequencies with integrated quartz resonators. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from continuous-operation variants within the same family.

Replacement Considerations

Direct substitutes must match the 82.0025 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and duty cycle before substitution.