18QHTF21-33.55443-PD

Oscillators Overview

The 18QHTF21-33.55443-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 33.55443 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and draws a maximum supply current of 23mA. Frequency stability is specified at ±50ppm. The component supports a standby or power-down mode for energy management. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount assembly.

Oscillators Feature Summary

• Supports standby (power down) mode for reduced power consumption
• Utilizes LVCMOS output logic for digital interface compatibility
• Operates on a low voltage 1.8V supply rail

Oscillators Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded control units needing low-power oscillators

Oscillators Procurement Notes

Verify the specific frequency tolerance and operating temperature range against the official datasheet before integration. Confirm that the 4-SMD no-lead package dimensions align with the target PCB footprint. Ensure the 1.8V supply voltage matches the system design requirements to prevent malfunction.

Oscillators Selection Notes

Select this component when a stable 33.55443 MHz reference is required with minimal power draw. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the ±50ppm stability specification for applications where moderate frequency accuracy is sufficient without expensive trimming.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies with consistent electrical characteristics. The 'PD' suffix likely indicates a specific packaging or tape-and-reel configuration, though exact details require datasheet confirmation.

Oscillators Replacement Considerations

Direct substitutes must match the 33.55443 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and thermal specifications before swapping manufacturers.