18QHTF21-11.0625-PD

Overview

The 18QHTF21-11.0625-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 11.0625 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a standby (power down) function. 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
• Features LVCMOS output logic compatibility
• Includes standby power-down capability

Applications

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

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply voltage aligns with the system power architecture. 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 11.0625 MHz reference is required for low-power digital applications. The choice is driven by the need for LVCMOS interface compatibility and a small form factor. Consider the 1.8V supply requirement and the availability of the standby feature for power management strategies in portable or energy-efficient designs.

Part Context

This part belongs to the QHTF series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options within a standardized 2.0x1.6mm footprint. The 'PD' suffix indicates the inclusion of a power-down control pin, distinguishing it from continuous-operation variants in the same family.

Replacement Considerations

Direct substitutes include other 11.0625 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications such as jitter and phase noise before substitution.