PSB 21383 H V1.3

Telecom Overview

The PSB21383HV1.3 is a SCOUT-SX integrated circuit manufactured by Infineon Technologies, combining an ISDN S/T transceiver and a speech codec with speakerphone functionality on a single chip. It operates at 3.3 V or 5 V supply voltages using CMOS technology. The device integrates Layer-1 and basic Layer-2 functions for digital terminals connected to four-wire S/T interfaces. It features an analog front end with three analog inputs and two analog outputs, programmable amplifiers, tone generation, and an IOM-2 interface for modular expansion. The component is available in P-MQFP-44 and P-MQFP-64 packages.

Telecom Feature Summary

• Integrates ISDN subscriber access controller and audio ringing codec filter with speakerphone performance
• Supports modular design via IOM-2 interface for functional extensions such as acoustic echo cancellation
• Includes HDLC controller supporting multiple data transfer modes and transparent operation
• Provides flexible microcontroller interface options including serial control and parallel bus configurations

Telecom Applications

• Basic ISDN voice terminals
• High-end featurephones requiring acoustic echo cancellation
• Digital terminal systems utilizing the S/T interface

Telecom Procurement Notes

Verify component authenticity through official Infineon channels or authorized distributors. Confirm package type matches system requirements, as P-MQFP-44 supports only serial interfaces while P-MQFP-64 includes parallel support. Check revision history for register address space and timing updates. Ensure compliance with CECC manufacturing standards specified in the datasheet.

Telecom Selection Notes

Select the PSB21383HV1.3 when speakerphone functionality is required alongside standard ISDN connectivity. Choose the P-MQFP-64 package if parallel microcontroller interfacing or additional clock/reset pins are necessary. Verify that the application environment supports the specified 3.3 V or 5 V operating voltage ranges and utilizes the appropriate IOM-2 protocol for peripheral integration.

Telecom Part Context

This component belongs to the SCOUT family of wired communications ICs designed for ISDN applications. It consolidates the functions previously handled by separate ISAC-S TE and ARCOFI-SP chips into a single CMOS solution. The PSB21383 variant specifically extends the base PSB21381 model by adding dedicated hardware for speakerphone operations, distinguishing it from non-speakerphone versions within the same product line.

Telecom Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Infineon directly for legacy replacement strategies or updated equivalents.