18QHTF21-13.5678-PD

Overview

The 18QHTF21-13.5678-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 13.5678 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down mode capability. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby or power-down functionality
• Utilizes LVCMOS output interface

Applications

• General timing clock generation
• Digital signal processing circuits
• Communication modules requiring precise frequency reference

Procurement Notes

Verify the specific ordering suffix to ensure compatibility with required voltage levels and output types. Confirm that the 4-SMD no-lead package matches the target PCB footprint. Ensure the operating temperature range aligns with the intended environmental conditions before finalizing procurement orders.

Selection Notes

Select this component when a small form factor is required alongside a 1.8V supply constraint. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the standby feature if power management during idle states is a critical design requirement.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, a supplier specializing in quartz crystals and oscillators. The series offers various frequencies within a standardized 2.0x1.6mm SMD package, providing consistent mechanical dimensions across different frequency options.

Replacement Considerations

Direct substitutes must match the 13.5678 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical specifications against alternative manufacturers' datasheets.