SAB 82526 H V2.2

Specialized Overview

The SAB 82526 H V2.2 is a High-Level Serial Communication Controller Extended (HSCX) manufactured by Infineon Technologies, housed in a P-MQFP-44-2 surface-mount package. It provides one independent full-duplex HDLC channel with integrated Layer-1 and Layer-2 protocol handling. The device features an 8-bit demultiplexed bus interface compatible with Intel or Motorola microcontrollers, supporting data rates up to 4 Mbit/s. Electrical characteristics include a supply voltage of +5 V, active power consumption of 25 mW at 4 MHz, and standby power of 4 mW. Each channel includes 64-byte transmit and receive FIFOs.

Specialized Feature Summary

• Supports LAPB, LAPD, SDLC, and HDLC protocols with automatic frame handling
• Integrated Digital Phase Locked Loop (DPLL) for clock recovery
• Programmable time-slot assignment for time division multiplex applications
• Direct DMA interface for efficient high-speed data transfer

Specialized Applications

• ISDN terminal equipment and network interfaces
• X.25 packet switching systems
• Time-slot oriented PCM communication systems
• High-speed serial synchronous communication links

Specialized Procurement Notes

Verify the specific ordering code Q67101-H6482 for the H variant. Confirm package type P-MQFP-44-2 matches design requirements. Check current availability status as legacy components may have limited supply. Ensure compatibility with existing system bus architecture before procurement.

Specialized Selection Notes

Select this model over the SAB 82525 when only a single HDLC channel is required. Verify that the P-MQFP-44-2 package fits the PCB layout constraints. Ensure the host processor supports the required 8-bit bus interface modes. Confirm power supply stability for the +5 V requirement.

Specialized Part Context

This component belongs to the Siemens/Infineon HSCX family, designed for advanced serial communication control. It extends the functionality of the earlier SAB 82520 HSCC with additional protocol support and DMA capabilities. The H variant specifically denotes the P-MQFP-44-2 package option within the broader 8252x series.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consider the SAB 82525 N V2.2 if two channels are acceptable and P-LCC-44-1 packaging is viable. Verify pinout compatibility for any potential cross-package replacements.