MAX7320_15 Datasheet, PDF (1/14 Pages) Maxim Integrated Products – I2C Port Expander with Eight Push-Pull Outputs

MAX7320
EVALUATION KIT AVAILABLE
I²C Port Expander with Eight Push-Pull Outputs
General Description
The MAX7320 2-wire serial-interfaced peripheral features
eight push-pull outputs with selectable power-up logic
states.
The +5.5V tolerant RST input clears the serial inter-
face, terminating any I²C communication to or from the
MAX7320.
The MAX7320 uses two address inputs with four-level
logic to allow 16 I²C slave addresses. The slave address
also determines the power-up state level for the outputs
in groups of four ports.
The MAX7320 supports hot insertion. The serial interface
SDA, SCL, AD0, AD2, and RST remain high impedance in
power-down (V+ = 0V) with up to +6V asserted on them.
The MAX7320 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 (see Table 1).
The MAX7320 is available in 16-pin QSOP and 16-pin
TQFN packages, and is specified over the automotive
temperature range (-40°C to +125°C).
Applications
●● Cell Phones/PDAs
●● Satellite Radios
●● Notebooks
●● RAID
●● Servers
Benefits and Features
●● 400kHz, +5.5V-Tolerant I²C Serial Interface
●● +1.71V to +5.5V Operating Voltage
●● Eight Push-Pull Output Ports with Selectable Power-
Up Logic States
●● RST Clears the Serial Interface, Terminating Any
Serial Transaction to or from the MAX7320
●● AD0 and AD2 Inputs Select from 16 Slave Addresses
●● Low 0.6μA (typ) Standby Current
●● -40°C to +125°C Temperature Range
Ordering Information
PART
MAX7320AEE+
MAX7320ATE+
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
PIN-
PACKAGE
16 QSOP
16 TQFN
3mm x 3mm x
0.8mm
TOP
MARK
—
ADB
+Denotes a lead(Pb)-free/RoHS-compliant package.
Pin Configurations, Typical Application Circuit, and
Functional Diagram appear at end of data sheet.
Selector Guide
PART
INPUTS
MAX7319
8
MAX7320
—
MAX7321
Up to 8
MAX7322
4
MAX7323
Up to 4
MAX7328*
MAX7329**
Up to 8
*Second source to PCF8574.
**Second source to PCF8574A.
INTERRUPT MASK
Yes
—
—
Yes
—
—
—
OPEN-DRAIN OUTPUTS
—
—
Up to 8
—
Up to 4
Up to 8
PUSH-PULL OUTPUTS
—
8
—
4
4
—
—
19-3879; Rev 1; 4/15