PI6C48543LEX

Clock Buffers, Drivers Overview

The PI6C48543LEX is a 3.3V low-skew fanout buffer manufactured by Diodes Incorporated, designed for differential to LVDS translation and clock distribution. It features two selectable differential input pairs (CLK/nCLK and PCLK/nPCLK) that support multiple logic levels including LVDS, LVPECL, CML, SSTL, LVHSTL, and HCSL. The device translates the selected input into four synchronized differential LVDS output pairs. Operating at frequencies up to 800 MHz with a maximum propagation delay of 2.2 ns, it ensures signal integrity with an output skew of 40 ps and part-to-part skew of 300 ps. The component is housed in a 20-pin TSSOP package.

Clock Buffers, Drivers Feature Summary

• Maximum operation frequency of 800 MHz with 4 pairs of differential LVDS outputs
• Selectable differential inputs supporting LVDS, LVPECL, CML, SSTL, LVHSTL, and HCSL levels
• Low skew performance: 40 ps output-to-output skew and 300 ps part-to-part skew
• Pin-to-pin compatible with ICS8543

Clock Buffers, Drivers Applications

• Differential to LVDS clock translation
• LVDS clock distribution networks
• Data-communications systems
• Telecommunications equipment

Clock Buffers, Drivers Procurement Notes

Verify the ordering code PI6C48543LE corresponds to the Pb-free and Green 20-pin wide TSSOP package. Confirm the specific suffix requirements for tape and reel quantities if applicable to the manufacturing line. Ensure the design supports the 3.3V power supply range of 3.135V to 3.465V.

Clock Buffers, Drivers Selection Notes

Select this component when a single-ended or differential source needs to drive multiple LVDS loads with minimal skew. The CLK_SEL pin allows flexibility between two input sources. Consider the external bias circuit requirements if driving the differential inputs with single-ended signals, as this requires specific resistor ratios to center the reference voltage.

Clock Buffers, Drivers Part Context

This device belongs to the PI6C485xx series of high-performance clock buffers. It serves as a direct replacement for the ICS8543, facilitating migration in existing designs without PCB layout changes. The device is part of Diodes Incorporated's portfolio of timing solutions for high-speed digital interfaces.

Clock Buffers, Drivers Replacement Considerations

The datasheet explicitly states pin-to-pin compatibility with the ICS8543. Designers replacing legacy ICS8543 components should verify that the new design accommodates the specific pull-up/pull-down configurations on the control pins (CLK_EN, CLK_SEL, OE).