18QHTF21-59.8178-PD

Overview

The 18QHTF21-59.8178-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 59.8178 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. This component is designed for applications requiring precise timing signals within space-constrained electronic systems.

Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Features a standby mode to reduce power consumption during idle periods
• Utilizes a small form factor SMD package for surface mount assembly

Applications

• General purpose timing clock generation
• Embedded system synchronization
• Consumer electronics signal processing

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 2.0x1.6mm 4-SMD no lead package specifications to avoid assembly issues.

Selection Notes

Select this model when a low-voltage 1.8V operation is required alongside a standard LVCMOS interface. Consider the physical size constraints of the 2.0x1.6mm package for dense layouts. Evaluate the need for power-down functionality if battery life or thermal management is a priority in the target application environment.

Part Context

This part belongs to the QHTF series of quartz crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options. The 'PD' suffix indicates the inclusion of a power-down feature. These components are generally used as primary clock sources in digital circuits where stability and size are critical factors.

Replacement Considerations

Direct substitutes must match the 59.8178 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 jitter before swapping components.