MAX9321BESA+

Clock Buffers, Drivers Overview

The MAX9321BESA+ is a low-skew differential receiver/driver designed for clock and data distribution. It supports differential PECL/LVPECL operation with a +3.0V to +5.5V supply range, and differential ECL/LVECL operation with a -3.0V to -5.5V supply. The device features an ultra-low propagation delay of 172ps typical and part-to-part skew of 20ps typical. It draws a maximum supply current of 24mA and includes an on-chip VBB reference for single-ended input adaptation. The component is housed in an 8-SOIC package.

Clock Buffers, Drivers Feature Summary

• Ultra-low propagation delay (172ps typical) and part-to-part skew (20ps typical)
• Supports differential PECL/LVPECL (+3.0V to +5.5V) and ECL/LVECL (-3.0V to -5.5V) supplies
• On-chip VBB reference allows conversion of differential inputs to single-ended
• ESD protection exceeds 2kV (Human Body Model)

Clock Buffers, Drivers Applications

• Precision Clock Buffer
• Low-Jitter Data Repeater

Clock Buffers, Drivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm package type and temperature range. The 'ESA' suffix indicates an 8-pin SO package with a -40°C to +85°C operating range. Confirm that the required supply voltage polarity matches the intended logic family (positive for PECL/LVPECL, negative for ECL/LVECL). Ensure proper bypassing capacitors are included in the design.

Clock Buffers, Drivers Selection Notes

Select this component when low skew and precise timing are critical for clock distribution networks. It is suitable for systems requiring interface between PECL, LVPECL, ECL, or LVECL signals. Consider the 24mA maximum supply current for power budget calculations. Ensure the PCB layout maintains 50Ω characteristic impedance for differential traces to minimize reflections and jitter.

Clock Buffers, Drivers Part Context

The MAX9321B is part of Maxim Integrated's high-speed clock buffer and driver portfolio. Analog Devices acquired Maxim Integrated, consolidating these products into its broader analog and mixed-signal lineup. This device serves as a replacement for legacy parts like the MC10EP16D, offering improved performance metrics such as lower skew and propagation delay.

Clock Buffers, Drivers Replacement Considerations

The datasheet identifies the MAX9321B as an improved second source for the MC10EP16D. Verify pin compatibility and electrical specifications before substitution. No other direct public substitutes are listed in the provided documentation.