18QHTF21-68.680-PD

Overview

The 18QHTF21-68.680-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 68.68 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down mode capability. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation with 1.8V supply requirement
• Includes standby functionality for power management
• Provides LVCMOS output signal compatibility

Applications

• General-purpose digital timing circuits
• Embedded systems requiring stable clock sources
• Communication equipment 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 4-SMD no-lead package footprint matches your PCB layout constraints to avoid assembly issues.

Selection Notes

Choose this component when a 68.68 MHz clock signal is required with low-power consumption characteristics. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the standby feature if power efficiency during idle states is a critical design parameter for the target application.

Part Context

This model belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series typically offers various frequency options within a standardized small form factor. These components are engineered for reliability in consumer electronics and industrial control environments where space is limited.

Replacement Considerations

Direct substitutes must match the 68.68 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical specifications before swapping manufacturers.