SAB82525H-V21

Specialized Overview

The Infineon Technologies SAB82525H-V21 is a High-Level Serial Communication Controller Extended (HSCX) fabricated in advanced ACMOS technology. It features two independent full-duplex HDLC channels within a P-MQFP-44-2 surface-mount package. The device supports data rates up to 4 Mbit/s and operates on a single +5 V power supply. Key electrical characteristics include active power consumption of 25 mW at 4 MHz and standby power of 4 mW. It integrates 64-byte FIFOs per channel and direction, an internal oscillator, baud rate generators, and Digital Phase Locked Loops for clock recovery.

Specialized Feature Summary

• Supports Full-Duplex LAPB/LAPD/SDLC/HDLC protocols with modulo 8 or 128 operation
• Includes 64-byte transmit and receive FIFOs per channel for efficient data buffering
• Features a 4-channel DMA interface for high-speed memory transfers without CPU intervention
• Provides programmable time-slot assignment and collision resolution for bus configurations

Specialized Applications

• ISDN applications utilizing time division multiplex methods
• Packet switching systems requiring high-level serial communication
• Time-slot oriented PCM system implementations
• Siemens/Intel or Motorola 8-bit and 16-bit microcontroller integration

Specialized Procurement Notes

Verify the specific ordering code Q67101-H6482 against current manufacturer availability. Confirm that the H suffix corresponds to the P-MQFP-44-2 package variant. Ensure compatibility with existing system voltage levels and bus interface requirements before finalizing procurement plans.

Specialized Selection Notes

Select this component when dual independent HDLC channels are required within a single integrated circuit. It is suitable for designs needing hardware offloading of Layer-2 protocol functions such as CRC generation and bit stuffing. Consider the P-MQFP-44-2 package constraints for PCB layout and thermal management during the selection process.

Specialized Part Context

This part belongs to the SAB 82525 series of High-Level Serial Communication Controllers. It is functionally compatible with the SAB 82520 but offers extended features like DMA support and additional protocol handling. The 'H' designation specifically indicates the P-MQFP-44-2 surface mount package option compared to the P-LCC-44-1 variant.

Specialized Replacement Considerations

The SAB 82525N serves as a pin-compatible alternative using the P-LCC-44-1 package. Verify software compatibility and physical footprint differences when substituting between the N and H suffix variants.