18QHTF21-84.6963-PD

Overview

The 18QHTF21-84.6963-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 84.6963 MHz with an LVCMOS output logic level. The device is designed for a supply voltage of 1.8V and features a power-down standby mode to reduce consumption. It utilizes a 4-SMD, no-lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes power-down standby functionality
• Utilizes compact surface-mount packaging

Applications

• General clock signal generation in electronic circuits
• Digital systems requiring precise timing references
• Embedded devices utilizing LVCMOS interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design 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. Check for any specific operating temperature range limitations defined in the official datasheet.

Selection Notes

Select this component when a stable 84.6963 MHz clock source is required for LVCMOS-compatible digital logic. The choice is driven by the need for low-power standby modes and a small form factor suitable for space-constrained designs. Consider the manufacturer's reliability standards and the availability of the specific PD suffix variant for power management needs.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies within a standardized 2.0x1.6mm package. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from continuous-operation variants within the same physical footprint family.

Replacement Considerations

Direct substitutes must match the 84.6963 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm SMD package. Verify pin compatibility and electrical characteristics such as jitter and phase noise if critical to the application.