18QHTF21-84.7739-PD

Overview

The 18QHTF21-84.7739-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 84.7739 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down (standby) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

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

Applications

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

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints to guarantee proper assembly and electrical connectivity.

Selection Notes

Select this component when a precise 84.7739 MHz reference is required in space-constrained designs. The choice is driven by the need for low-power operation via the standby feature and compatibility with 1.8V logic families. Consider the small form factor as a primary advantage for dense circuit board layouts.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The manufacturer has a long history in Taiwan's crystal industry. This series typically offers standard oscillators designed for various digital applications requiring stable clock signals.

Replacement Considerations

Direct substitutes within the same series include models such as 18QHTF21-96.768-PD, 18QHTF21-51.200-PD, and 18QHTF21-48.7056-PD, provided the frequency difference is acceptable for the application.