MAX7310 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – 2-Wire-Interfaced 8-Bit I/O Port Expander with Reset

19-2698; Rev 3; 2/05
2-Wire-Interfaced 8-Bit I/O Port Expander
with Reset
General Description
The MAX7310 provides 8-bit parallel input/output port
expansion for SMBus™-compatible and I²C™-compati-
ble applications. The MAX7310 consists of an input port
register, an output port register, a polarity inversion reg-
ister, a configuration register, a bus timeout register,
and an SMBus/I²C-compatible serial interface. The sys-
tem master can invert the MAX7310 input data by writ-
ing to the active-high polarity inversion register. The
system master can enable or disable bus timeout by
writing to the bus timeout register.
Any of the eight I/O ports may be configured as input or
output. An active-low reset input sets the eight I/Os as
inputs. Three address select pins configure one of 56
slave ID addresses.
The MAX7310 is available in 16-pin thin QFN, TSSOP,
and QSOP packages and is specified over the -40°C to
+125°C automotive temperature range.
Applications
Servers
RAID Systems
Industrial Control
Medical Equipment
Instrumentation, Test Measurement
SMBus is a trademark of Intel Corp.
Purchase of I²C components of Maxim Integrated Products, Inc.,
or one of its sublicensed Associated Companies, conveys a
license under the Philips I²C Patent Rights to use these compo-
nents in an I²C system, provided that the system conforms to the
I²C Standard Specification as defined by Philips.
Features
♦ 400kHz 2-Wire Interface
♦ 2.3V to 5.5V Operation
♦ Low Standby Current (1.7µA typ)
♦ Bus Timeout for Lock-Up-Free Operation
♦ 56 Slave ID Addresses
♦ Polarity Inversion
♦ Eight I/O Pins that Default to Inputs on Power-Up
♦ 5V Tolerant Open-Drain Output on I/O0
♦ 4mm x 4mm, 0.8mm Thin QFN Package
♦ -40°C to +125°C Operation
Ordering Information
PART
MAX7310AUE
MAX7310AEE
MAX7310ATE
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
16 TSSOP
16 QSOP
16 Thin QFN
—
—
T1644-4
Pin Configurations
TOP VIEW
SCL 1
SDA 2
AD0 3
AD1 4
AD2 5
I/O0 6
I/O1 7
GND 8
MAX7310
16 V+
15 RESET
14 I/O7
13 I/O6
12 I/O5
11 I/O4
10 I/O3
9 I/O2
TSSOP/QSOP
12 11 10 9
RESET 13
V+ 14
SCL 15
SDA 16
MAX7310ATE
1
2
3
4
THIN QFN
8 I/O3
7 I/O2
6 GND
5 I/O1
________________________________________________________________ Maxim Integrated Products 1
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1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.