18QHTF21-7.056-PD

Overview

The 18QHTF21-7.056-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 7.056 MHz and utilizes LVCMOS output logic levels. The device is designed for operation with a supply voltage of 1.8V. It features a compact surface-mount package measuring 2.0mm by 1.6mm in footprint, utilizing a four-terminal no-lead SMD configuration. The component supports standard operating conditions and includes power-down functionality for standby mode control.

Feature Summary

• Generates a precise 7.056 MHz clock signal using LVCMOS interface
• Operates on a low 1.8V supply voltage for energy efficiency
• Utilizes a compact 2.0x1.6mm four-terminal no-lead surface mount package

Applications

• Embedded system clock generation
• Digital signal processing circuits
• Microcontroller timing references

Procurement Notes

Verify the specific ordering suffix to ensure compatibility with required pin configurations and electrical specifications. Confirm that the LVCMOS output type matches the receiving logic family requirements. Ensure the 1.8V supply voltage aligns with the target system design constraints before procurement.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a small form factor. The 2.0x1.6mm package size is suitable for high-density PCB layouts. Verify that the LVCMOS output swing is compatible with the connected digital inputs.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequency options within a standardized small outline package. The PD suffix typically denotes specific packaging or tape-and-reel configurations provided by the manufacturer.

Replacement Considerations

Direct substitutes include other 1.8V LVCMOS oscillators in 2.0x1.6mm packages from manufacturers such as Epson or SiTime, provided the frequency tolerance and load capacitance requirements are met.