PI7C9X1172BLEX

Controllers Overview

The PI7C9X1172BLEX is a discontinued I2C-bus/SPI to dual-channel UART bridge controller manufactured by Diodes Incorporated. It provides full-duplex serial communication with 64-byte transmitter and receiver FIFOs, supporting baud rates up to 16 Mbit/s via 4X sampling. The device operates at supply voltages of 1.8V, 2.5V, or 3.3V within an industrial temperature range of -40°C to 85°C. It features backward compatibility with the 16C450 register set, programmable character formatting, hardware/software flow control, and up to eight general-purpose I/O pins. Available in TSSOP-28 packages.

Controllers Feature Summary

• Dual-channel full-duplex UART interface with 64-byte TX/RX FIFOs
• Support for I2C-bus (Fast Speed) and SPI (Mode 0 Slave) host interfaces
• Backward compatible with industry standard 16C450, 16C550, and 16C2550 register sets
• Integrated IrDA encoder/decoder and automatic RS-485 half-duplex direction control

Controllers Applications

• Industrial computing and automation systems
• Factory process control equipment
• Mobile and embedded battery-operated devices
• Networking infrastructure components

Controllers Procurement Notes

This specific part number variant is officially marked as obsolete and no longer manufactured. Verification of availability should focus on direct replacement alternatives listed by the manufacturer rather than original stock. Sourcing requires confirmation of current lifecycle status through official distributor channels to ensure component authenticity and compliance with RoHS3 standards.

Controllers Selection Notes

Designers requiring this functionality must select a verified active substitute from the same product family. Selection criteria should prioritize package compatibility, voltage range support, and FIFO depth matching. Verify that the replacement component maintains identical pinout configurations and register compatibility to minimize redesign efforts in existing PCB layouts.

Controllers Part Context

The PI7C9X1172 belongs to the PI7C9X117x series of high-performance UART bridge controllers. This series integrates protocol conversion capabilities between digital system buses and serial communication standards. The device line emphasizes low power consumption and small form factor implementations suitable for space-constrained electronic applications.

Controllers Replacement Considerations

The PI7C9X1172CLEX is documented as a direct replacement for the obsolete PI7C9X1172BLEX. Engineers should verify package and electrical parameter equivalence before implementation.