18QHTF21-13.567188-PD

Overview

The 18QHTF21-13.567188-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 13.567188 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, no lead surface-mount package with dimensions of 2.00mm x 1.60mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic
• Compact 4-SMD no-lead surface mount package

Applications

• General clock signal generation
• Embedded systems timing
• Consumer electronics circuits

Procurement Notes

Verify the specific frequency tolerance and operating temperature range against the official datasheet before procurement. Confirm that the 1.8V supply requirement aligns with the target system design. Ensure the 4-SMD no-lead package footprint matches the PCB layout constraints to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a precise 13.567188 MHz clock source is required for LVCMOS-compatible digital logic. The choice is driven by the need for low-power operation via the 1.8V supply and the integration of standby modes. The small form factor makes it suitable for space-constrained applications where standard through-hole oscillators cannot be utilized.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies within the standard range, all sharing similar electrical characteristics and physical dimensions. The 'PD' suffix indicates the inclusion of power-down capabilities, distinguishing it from non-stby variants within the same family.

Replacement Considerations

Direct substitutes must match the 13.567188 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify pinout compatibility and thermal specifications. Cross-reference with other manufacturers offering identical footprint and electrical parameters to ensure seamless integration without redesign.