18QHTF21-21.3125-PD

Oscillators Overview

The 18QHTF21-21.3125-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 21.3125 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby mode for power down functionality. 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 at 1.8V
• Includes standby capability for power management
• Utilizes LVCMOS output interface

Oscillators Applications

• Digital signal processing systems
• Communication equipment timing
• Microcontroller clock sources

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 constraints to avoid assembly issues.

Oscillators Selection Notes

Choose this component when a stable 21.3125 MHz reference is required with minimal power consumption. The LVCMOS output ensures compatibility with standard digital logic families. Consider the operating temperature range and phase noise specifications if high-frequency stability is critical for your application environment.

Oscillators Part Context

This part belongs to the QHTF series of surface-mount oscillators from Mercury Electronics. These devices are engineered for cost-effective timing solutions in consumer and industrial electronics. The 'PD' suffix typically indicates a specific tape-and-reel packaging option or variant within the manufacturer's catalog.

Oscillators Replacement Considerations

Direct substitutes must match the 21.3125 MHz frequency, 1.8V supply, and LVCMOS output. Verify pinout compatibility for the 4-SMD package. Cross-reference with other Mercury QHTF variants or industry-standard oscillators offering identical electrical parameters and mechanical dimensions.