18QHTF21-26.8435-PD

Oscillators Overview

The 18QHTF21-26.8435-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 26.8435 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby power-down mode. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component provides precise clock signals for digital circuits requiring stable timing references.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V with integrated power-down functionality
• Delivers LVCMOS output logic for direct interface with digital systems
• Utilizes a miniature surface-mount package for space-constrained designs

Oscillators Applications

• Clock generation for high-speed data communication interfaces
• Timing reference for portable consumer electronics
• System clock source for embedded microcontrollers

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail is stable to maintain oscillator performance. Confirm that the PCB footprint matches the 2.0x1.6mm SMD package dimensions. Check for RoHS compliance status if required by your manufacturing standards. Validate compatibility with LVCMOS input thresholds of the receiving component.

Oscillators Selection Notes

Select this oscillator when a precise 26.8435 MHz clock signal is required in a minimal form factor. The 1.8V operating voltage makes it suitable for battery-powered or low-voltage logic systems. Consider the standby feature for applications requiring power management. Ensure the application environment does not exceed the specified temperature range. Verify that the LVCMOS output swing meets the noise immunity requirements of the target system.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies with standardized packaging. The 'PD' suffix indicates the inclusion of a power-down control pin. These components are designed for general-purpose timing applications where size and power consumption are critical factors.

Oscillators Replacement Considerations

Direct replacements must match the 26.8435 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility, particularly the power-down control function. Check if alternative manufacturers offer equivalent frequency stability and phase noise specifications.