Maxim MAX7321ATE+

8I²CPOR1.71V ~ 5.5V-40°C ~ 125°C

Overview

The MAX7321ATE 2-wire serial-interfaced peripheral features eight open-drain I/O ports with selectable internal pullups and transition detection. Any port may be used as a logic input or an open-drain output. Ports are overvoltage protected to +6V independent of supply voltage. All I/O ports configured as inputs are continuously monitored for state changes (transition detection). State changes are indicated by the open-drain, active-low INT output. The interrupt is latched, allowing detection of transient changes. When the MAX7321ATE is subsequently accessed through the serial interface, any pending interrupt is cleared. The open-drain outputs are rated to sink 20mA and are capable of driving LEDs. The +6V tolerant active-low RST input clears the serial interface, terminating any I2C communication to or from the MAX7321. The MAX7321ATE uses two address inputs with four-level logic to allow 16 I2C slave addresses. The slave address also determines the power-up logic state for the I/O ports, and enables or disables internal 40kΩ pullups in groups of four ports. The MAX7321ATE is one device in a family of pin-compatible port expanders with a choice of input ports, open-drain I/O ports, and push-pull output ports. The MAX7321ATE is available in 16-pin QSOP and TQFN packages, and is specified over the automotive temperature range (-40°C to +125°C).

Features

Tube Package

Surface Mount Mounting Type

Applications

There are a lot of Maxim Integrated
MAX7321ATE+ I/O Expanders applications.

• Antialiasing/Reconstruction Filter
• Single-Ended to Differential Conversion/Amplification
• Low Voltage, Low Noise, Differential Signal Processing
• Common Mode Voltage Translation
• Portable Instrumentation
• Multiprotocol RFID Readers: EPC-GEN2, ISD and IPX
• IDEN, PHS, GSM Basestations
• Repeaters, Radio Links, and Modems
• Wireless Telemetry
• JTRS