18QHTF21-90.1368-PD

Overview

The 18QHTF21-90.1368-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 90.1368 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly. This component provides precise timing signals for digital circuits requiring stable clock sources.

Feature Summary

• LVCMOS output logic interface
• Integrated standby (power down) capability
• Compact 4-SMD no lead package

Applications

• Battery-powered portable devices
• Digital signal processing systems
• Communication equipment timing

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD no lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this model when a 90.1368 MHz clock source is required with low voltage operation. Consider the LVCMOS compatibility with downstream logic families. Evaluate the need for standby functionality to manage power consumption in idle states. Verify thermal performance within the specified operating temperature range for the intended application environment.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies with consistent 1.8V operation and LVCMOS outputs. The 'PD' suffix indicates the inclusion of a power-down pin or feature. These components are designed for applications requiring reliable timing in space-constrained environments.

Replacement Considerations

Direct substitutes must match the 90.1368 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Check datasheets for equivalent parts from other manufacturers ensuring identical pinout and electrical characteristics. Verify if alternative brands offer compatible standby functionality.