MAX7318 Datasheet | Maxim Integrated

Description The MAX7318 2-wire-interfaced expander provides 16bit parallel input/output (I/O) port expansion for SMBus™ and I2C™ applications. The MAX7318 consists of input port registers, output port registers, polarity inversion registers, configuration registers, a bus timeout register, and an I2C-patible serial interface logic patible with SMBus. The system master can invert the MAX7318 input data by writing to the activehigh polarity inversion register. Any of the 16 I/O ports can be configured as an input or output. A power-on reset (POR) initializes the 16 I/Os as inputs. Three address select pins configure one of 64 slave ID addresses. The MAX7318 supports hot insertion. All port pins, the INT output, SDA, SCL, and the slave address inputs AD0- 2 remain high impedance in power-down (V+ = 0V) with up to 6V asserted upon them. The MAX7318 is available in 24-pin SO, SSOP, TSSOP, and thin QFN packages and is specified over the -40°C to +125°C automotive temperature range. For applications requiring an SMBus timeout function, refer to the MAX7311 data sheet. - 2V to 5.5V Operation - 5.5V Overvoltage-Tolerant I/Os - Supports Hot Insertion - 16 I/O Pins that Default to Inputs on Power-Up - 100kΩ Pullup on Each I/O - Open-Drain Interrupt Output (INT) - Noise Filter on SCL/SDA Inputs - 64 Slave ID Addresses Available - Low Standby Current (5.4µA typ) - Polarity Inversion - 4mm ✕ 4mm, 0.8mm Thin QFN Package - -40°C to +125°C Operation Features - 400kbps I2C-patible Serial Interface Ordering Information PART TEMP RANGE PIN-PACKAGE PKG CODE - - T2444-4 - Applications Servers RAID Systems Industrial Control Medical Equipment PLCs Instrumentation and Test Measurement MAX7318AWG -40°C to +125°C 24 Wide SO MAX7318AAG MAX7318ATG MAX7318AUG -40°C to +125°C 24 SSOP -40°C to +125°C 24 Thin QFN (4mm ✕ 4mm) -40°C to +125°C 24 TSSOP SMBus is a trademark of Intel Corp. I2C is a trademark of Philips Corp. Purchase of I2C ponents from Maxim Integrated Products, Inc.,...