18QHTF21-38.152945-PD

Oscillators Overview

The 18QHTF21-38.152945-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 38.152945 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning at 1.8V supply voltage. It features a power-down capability via a standby control input to reduce consumption when inactive. The component is housed in a compact 4-SMD, No Lead surface-mount package with dimensions of 2.0mm x 1.6mm. This oscillator provides precision timing solutions suitable for digital circuits requiring stable clock signals.

Oscillators Feature Summary

• LVCMOS output interface for digital compatibility
• Integrated standby mode for power management
• Compact 4-SMD no-lead surface mount form factor

Oscillators Applications

• Precision timing circuits
• Digital signal processing systems
• Communication equipment clocking

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure the 1.8V supply rail is stable and within the operational limits specified in the official datasheet. Confirm that the PCB footprint matches the 2.0mm x 1.6mm SMD package dimensions to prevent assembly errors. Check for any specific handling instructions regarding electrostatic discharge protection during installation.

Oscillators Selection Notes

Select this component when a precise 38.152945 MHz clock source is required in space-constrained designs. The LVCMOS output ensures direct interfacing with standard logic families without additional level shifting. The inclusion of a power-down feature makes it suitable for battery-operated or energy-efficient applications. Consider the 1.8V operating voltage to ensure compatibility with modern low-power microcontrollers and FPGAs.

Oscillators Part Context

Mercury Electronics Ind. Co. Ltd specializes in frequency-control products, including quartz crystals and oscillators. The 18QHTF21 series represents their line of surface-mount crystal oscillators designed for high reliability. This specific model falls under the standard XO category, offering fixed-frequency performance. The manufacturer has established expertise in Taiwan's crystal industry since 1973, focusing on precision timing components for various electronic industries.

Oscillators Replacement Considerations

Direct substitutes must match the 38.152945 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify equivalent frequency stability and phase noise specifications if replacing with a different brand. Ensure the replacement part supports the same power-down functionality and pin configuration to maintain board compatibility.