18QHTF21-42.07788-PD

Oscillators Overview

The 18QHTF21-42.07788-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 42.07788 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.

Oscillators Feature Summary

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

Oscillators Applications

• General electronic timing circuits
• Embedded systems requiring stable clock sources
• Consumer electronics with space constraints

Oscillators 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 specifications to guarantee proper assembly and electrical connection.

Oscillators Selection Notes

Select this component when a precise 42.07788 MHz clock signal is required in a low-power environment. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the standby feature if power efficiency during idle periods is a critical design constraint for the target application.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series offers various frequencies within a small form factor. The 'PD' suffix typically indicates specific packaging or handling characteristics defined by the manufacturer, distinct from other variants in the same family.

Oscillators Replacement Considerations

Direct substitutes must match the 42.07788 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and thermal characteristics before swapping. Generic oscillators may not support the specific standby function without additional circuitry.