PL138-48QC

Clock Buffers, Drivers Overview

The PL138-48QC is a low-skew, 1:4 differential LVPECL fanout buffer manufactured by Microchip Technology. It operates on a single supply voltage ranging from 2.375V to 3.63V and supports output frequencies up to 800 MHz. The device features four differential LVPECL output pairs and two selectable differential input pairs capable of translating various standard formats including LVDS, CML, and HCSL. Key electrical specifications include a typical propagation delay of 680 ps at +25°C, an output skew of 25 ps, and additive jitter under 100 fs. It is housed in a 16-pin QFN package with a commercial temperature range of 0°C to +70°C.

Clock Buffers, Drivers Feature Summary

• Four differential LVPECL outputs supporting frequencies up to 800 MHz
• Low skew performance with 25 ps typical output skew and <100 fs max additive jitter
• Flexible input compatibility for LVPECL, LVCMOS, LVDS, HCSL, SSTL, LVHSTL, and CML
• Single supply operation between 2.375V and 3.63V

Clock Buffers, Drivers Applications

• High-speed clock distribution networks
• Telecommunications infrastructure equipment
• Data communication systems requiring low-jitter signal buffering

Clock Buffers, Drivers Procurement Notes

Verify the ordering suffix 'QC' corresponds to the 16-pin QFN package and commercial temperature range (0°C to +70°C). Confirm that the specific revision of the datasheet DS20005543B matches the production lot requirements. Ensure proper termination resistors are selected based on the operating voltage to maintain signal integrity.

Clock Buffers, Drivers Selection Notes

Select this component when a low-cost, high-performance LVPECL buffer is required for commercial applications. The PL138-48QC is suitable for designs needing translation from single-ended or other differential inputs to LVPECL. Consider thermal resistance values if operating near the upper ambient temperature limit of +70°C with all outputs loaded.

Clock Buffers, Drivers Part Context

The PL138-48QC belongs to the PL138-48 family of differential LVPECL buffers. This family includes variants with different packages (TSSOP) and temperature ratings (Industrial -40°C to +85°C). The 'Q' suffix indicates the 16-pin QFN package, while 'C' denotes the commercial temperature range.

Clock Buffers, Drivers Replacement Considerations

Direct replacements within the same package and temperature range include PL138-48QI (Industrial grade). For tape and reel packaging options, consider PL138-48OC-R or PL138-48OI-R depending on the required temperature specification.