IDT7290820J8

Overview

The IDT7290820J8 is a non-blocking digital time slot interchange switch manufactured by Renesas Electronics. It provides a switching capacity of 2,048 x 2,048 channels at a serial bit rate of 8.192 Mb/s. The device supports variable or constant throughput delay per channel and features automatic identification of ST-BUS/GCI interfaces. It accepts input streams of 2.048 Mb/s, 4.096 Mb/s, or 8.192 Mb/s. The component operates on a 5V power supply and includes programmable stream and channel control capabilities.

Feature Summary

• Non-blocking digital switching architecture supporting up to 2,048 x 2,048 channels
• Automatic identification of ST-BUS and GCI interface standards
• Programmable per-channel high-impedance output control and processor mode interface
• Per-stream frame delay offset programming for multi-chip synchronization

Applications

• Telecommunications infrastructure requiring digital time slot interchange
• Multi-chip switch systems transporting voice and concatenated data channels
• Network equipment utilizing ST-BUS or GCI interfaces

Procurement Notes

Verify the specific suffix J8 against official datasheets to confirm package type and temperature range. Confirm RoHS compliance status as older IDT variants may differ. Check for end-of-life notices or obsolescence warnings from Renesas before procurement planning.

Selection Notes

Select this component when a non-blocking digital switch with 2,048 x 2,048 channel capacity is required. Ensure system timing aligns with the 8.192 Mb/s maximum serial bit rate. Verify compatibility with existing ST-BUS or GCI interface protocols in the design.

Part Context

This part belongs to the IDT72908 series of digital time slot interchange switches. These devices are designed for high-density telecommunications applications. The IDT brand was integrated into Renesas Electronics following acquisition activities.

Replacement Considerations

Consult official Renesas documentation for direct cross-reference substitutes. Verify pinout and electrical specifications match exactly if considering alternative manufacturers.