MDB1900ZBQZ

Overview

The MDB1900ZBQZ is a zero-delay buffer from Microchip Technology designed for PCI Express and SATA CPU applications. It features one differential HCSL input and nineteen differential HCSL outputs, providing a 2:19 input-to-output ratio. The device operates with a supply voltage range of 2.375V to 3.465V and supports a maximum frequency of 133.33MHz. It is housed in a 72-VFQFN exposed pad package (10x10mm) suitable for surface mount installation. The component functions within an operating temperature range of 0°C to 70°C.

Feature Summary

• Zero-delay buffer architecture for PCI Express and SATA CPU timing
• Converts one HCSL input to nineteen HCSL outputs
• Operates on 2.375V to 3.465V supply voltage
• Housed in a compact 72-VFQFN (10x10mm) package

Applications

• PCI Express clock distribution
• SATA CPU timing circuits
• High-speed digital system synchronization

Procurement Notes

Verify the specific ordering suffix 'QZ' against official Microchip documentation to confirm the exact temperature grade and packaging configuration. Ensure that the 0°C to 70°C commercial temperature range aligns with the design requirements before procurement.

Selection Notes

Select this component when a single HCSL source must drive up to nineteen loads with zero-delay buffering. Confirm that the required operating environment falls within the 0°C to 70°C range and that the 133.33MHz maximum frequency meets the system specifications.

Part Context

This part belongs to the Application Specific Clock/Timing category. It serves as a critical timing solution for high-speed interfaces like PCIe and SATA, ensuring signal integrity across multiple downstream components through its specific 2:19 buffering capability.

Replacement Considerations

Check for pin-compatible upgrades such as the 9ZX series if enhanced jitter performance or extended temperature ranges are required. Verify electrical compatibility regarding output signaling types and supply voltage constraints.