18QHTF21-60.938-PD

Overview

The 18QHTF21-60.938-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 60.938 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to manage energy consumption. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0 x 1.6 mm. This component serves as a precise clock source for digital circuits requiring low-profile surface-mount integration.

Feature Summary

• Integrates LVCMOS output logic for direct interface with digital loads
• Includes standby capability to reduce power consumption during idle states
• Utilizes a small form factor 4-SMD no-lead package for space-constrained designs

Applications

• Clock generation for high-speed data communication interfaces
• Timing reference for portable consumer electronics
• System clock source for embedded microcontroller units

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable within the specified tolerance to ensure frequency accuracy. Ensure the PCB footprint matches the 2.0x1.6mm SMD no-lead package dimensions to prevent assembly issues. Cross-reference the datasheet for any specific reflow soldering profile recommendations to maintain component integrity during manufacturing.

Selection Notes

Select this oscillator when a 60.938 MHz frequency is strictly required for system synchronization. The 1.8V supply requirement makes it suitable for modern low-voltage digital systems. Consider the LVCMOS output compatibility with the receiving input pins. The small 4-SMD package is ideal for applications with strict spatial limitations. Evaluate the need for the standby feature if power management is a critical design constraint.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options within a standardized 2.0x1.6mm footprint. The 'PD' suffix indicates the inclusion of a power-down pin or function. Mercury Electronics specializes in frequency control products, providing reliable timing solutions for industrial and commercial applications.

Replacement Considerations

Direct replacements must match the 60.938 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter. Consult manufacturer cross-reference lists for equivalent parts from other suppliers offering identical specifications.