18QHTF21-11.155-PD

Overview

The 18QHTF21-11.155-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 11.155 MHz with LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby power-down function. It is housed in a 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports low voltage operation at 1.8V
• Includes standby power-down capability
• Utilizes LVCMOS output logic

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. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific operating temperature range limitations defined in the official datasheet.

Selection Notes

Select this component when a precise 11.155 MHz clock source is required for low-power applications. The LVCMOS interface ensures compatibility with standard digital logic families. The compact 2.0x1.6mm package is suitable for space-constrained designs. Consider the standby feature if power management during idle states is a priority for the system architecture.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies within the standard XO category. The 'PD' suffix indicates the inclusion of a power-down control pin. These components are designed for high reliability in consumer and industrial electronics requiring stable clock signals.

Replacement Considerations

Direct replacements include other 18QHTF21 variants with identical pinouts but different frequencies, such as 18QHTF21-11.000-PD or 18QHTF21-11.130-PD. Cross-referencing with other manufacturers requires verifying electrical parameters and mechanical dimensions to ensure functional equivalence.