CDCUN1208LPRHBT

Overview

The CDCUN1208LPRHBT is a clock buffer and distribution device manufactured by Texas Instruments. It features one circuit with a 2:8 input-to-output ratio, supporting differential inputs and outputs. The component operates within a supply voltage range of 1.7V to 3.63V and supports maximum frequencies up to 400 MHz. Input and output signal types include HCSL, LVCMOS, and LVDS. It is housed in a 32-VQFN (5x5) package with an exposed pad, designed for surface mount installation. The device functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• 2:8 fanout buffer configuration with differential input/output support
• Supports HCSL, LVCMOS, and LVDS signal standards
• Operates on 1.7V to 3.63V supply voltage
• Maximum frequency capability of 400 MHz

Applications

• Clock distribution networks requiring 2:8 splitting
• Systems utilizing LVDS or HCSL clock signals
• Embedded timing circuits operating between 1.7V and 3.63V

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and reel specifications. Ensure compatibility with the required input signal standard (HCSL, LVCMOS, or LVDS) and confirm that the 32-VQFN footprint matches the target PCB layout constraints.

Selection Notes

Select this component when a 2:8 clock split is required with support for multiple logic families including LVDS and HCSL. Verify that the system power supply falls within the 1.7V to 3.63V range and that the 400 MHz maximum frequency meets the design requirements. Confirm thermal management capabilities for the -40°C to +85°C operating range.

Part Context

This part belongs to the family of clock buffers and drivers from Texas Instruments. It serves as a distribution element for timing signals, converting a single differential input into eight synchronized outputs. The device is distinct from general-purpose logic buffers due to its specific support for high-speed differential signaling standards like LVDS and HCSL.

Replacement Considerations

Consult official substitution guides for pin-compatible alternatives within the same manufacturer's portfolio. Verify that any replacement maintains the 2:8 ratio, 400 MHz frequency limit, and compatible voltage ranges.