IDTCSPT857DNLG8

Overview

The IDTCSPT857DNLG8 is a PLL-based clock driver manufactured by Renesas Electronics Corporation, designed for memory, DDR, and SDRAM applications. It features a single circuit with a 1:10 input-to-output ratio and supports differential inputs and outputs. The device operates at a maximum frequency of 220MHz with a supply voltage range of 2.3V to 2.7V. It is housed in a 40-VFQFN package with an exposed pad (supplier designation: 40-VFQFPN 6x6) and functions within a commercial temperature range of 0°C to 70°C.

Feature Summary

• PLL-based architecture optimized for DDR/SDRAM clock distribution
• 1:10 differential clock distribution ratio
• Maximum operating frequency of 220MHz
• Low skew performance (<75ps for PC3200)

Applications

• DDR SDRAM clock buffering
• SDRAM clock distribution
• Memory system timing

Procurement Notes

This component is marked as obsolete and no longer manufactured. Verification of availability should focus on surplus or secondary market sources rather than direct manufacturer distribution. Confirm the specific package variant matches design requirements before procurement.

Selection Notes

Select this part for designs requiring a 1:10 differential clock buffer with integrated PLL functionality. Ensure the PCB layout accommodates the 40-VFQFN package dimensions. Verify that the 2.3V-2.7V supply voltage aligns with the target memory interface specifications.

Part Context

The IDTCSPT857DNLG8 belongs to the CSPT857 series of clock drivers. It is functionally equivalent to the CSPT857DNLG8 part number. The device was originally produced by Integrated Device Technology (IDT), which is now part of Renesas Electronics.

Replacement Considerations

Texas Instruments CDCVF857RHAT is listed as an upgrade substitute for this obsolete component.