TPT29555A-TS5R

Overview

The TPT29555A-TS5R is a 16-bit I2C GPIO expander with interrupt and weak pull-up resistors, packaged in TSSOP-24. It operates on a supply voltage of 1.65 V to 5.5 V, supporting interconnection with 1.8-V microcontrollers. The device features low standby current consumption of 3.0 μA at 5 V and 1.5 μA at 3.3 V. It supports 400-kHz Fast-Mode I2C communication and includes 5-V tolerant I/Os. An open-drain active-low interrupt output (INT) signals input state changes. Three hardware address pins allow up to eight devices on the same bus. It provides latch-up protection exceeding 200 mA per JESD 78 and ESD protection exceeding ±4000 V HBM and ±1500 V CDM.

Feature Summary

• I2C-Bus to 16-Bit GPIO Expander
• Low Standby Current Consumption
• Open-Drain Active Low Interrupt Output
• Configurable Slave Address with 3 Address Pins

Applications

• Servers/Storages
• Routers (Telecom Switching Equipment)
• Personal Computers

Procurement Notes

Verify the TPT29555A-TS5R datasheet revision history for updates regarding operating temperature ranges and thermal characteristics. Confirm that the TSSOP-24 package dimensions align with PCB layout requirements. Ensure power supply decoupling capacitors are placed close to the VCC pin as recommended in the application guidelines.

Selection Notes

Select this component when expanding I/O capabilities via I2C for systems requiring low standby power and high ESD tolerance. It is suitable for interfacing with 1.8-V logic while maintaining 5-V I/O compatibility. Consider the TSSOP-24 package for applications needing multiple addressable units on a single bus without external address configuration components.

Part Context

The TPT29555A belongs to the TPT series of I2C peripherals from 3PEAK. It serves as a general-purpose input/output expander designed for systems requiring additional digital I/O lines over a serial interface. The TS5R suffix indicates the TSSOP-24 package variant supplied in tape and reel format for automated assembly processes.

Replacement Considerations

Public confirmed substitute part numbers: None available.