18QHTF21-115.120-PD

Overview

The 18QHTF21-115.120-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 115.12 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down function accessible via a standby control pin. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby mode for power management
• Utilizes LVCMOS output interface

Applications

• General clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational needs. Confirm that the PCB footprint matches the 2.0x1.6mm SMD package dimensions to ensure proper assembly and electrical connectivity.

Selection Notes

Select this component when a precise 115.12 MHz clock source is required for low-power applications. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the power-down feature if energy efficiency during idle states is a critical design constraint for the target application.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies within a small form factor. The 'PD' suffix indicates the inclusion of a power-down capability, distinguishing it from standard continuous-operation variants within the same physical package family.

Replacement Considerations

Direct replacements must match the 115.12 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify equivalent performance characteristics such as phase noise and jitter if available in competitor datasheets.