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MAX7310AUE+T

P1-P3P4-P6P7-P9P10-P12P13-P15
MAX7310
2-Wire-Interfaced 8-Bit I/O Port Expander
with Reset
________________________________________________________________ Maxim Integrated Products 1
19-2698; Rev 3; 2/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
General Description
The MAX7310 provides 8-bit parallel input/output port
expansion for SMBus™-compatible and I
2
C-compatible
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/I
2
C-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
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
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX7310AUE
-40°C to +125°C
16 TSSOP —
MAX7310AEE
-40°C to +125°C
16 QSOP —
MAX7310ATE
-40°C to +125°C
16 Thin QFN
T1644-4
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
TOP VIEW
TSSOP/QSOP
SCL
SDA
AD0
AD1
AD2
I/O0
I/O1
GND
V+
RESET
I/O7
I/O6
I/O5
I/O4
I/O3
I/O2
THIN QFN
I/O4
12
13
14
15
16
8
7
6
5
11 10 9
1234
I/O7
I/O6
I/O5
I/O3
I/O2
GND
I/O1
V+
SCL
SDA
AD0
AD1
AD2
I/O0
RESET
MAX7310ATE
MAX7310
Pin Configurations
SMBus is a trademark of Intel Corp.
MAX7310
2-Wire-Interfaced 8-Bit I/O Port Expander
with Reset
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V+ to GND ................................................................-0.3V to +6V
I/O1–I/O7 as an Input.......................(V
SS
- 0.3V) to (V
DD
+ 0.3V)
I/O0 as an Input..............................................(V
SS
- 0.3V) to +6V
SCL, SDA, AD0, AD1, AD2, RESET ...............(V
SS
- 0.3V) to +6V
DC Current on I/O0 ........................................................ +400µA
DC Current on I/O1 to I/O7 ............................................. ±50mA
Maximum GND and V+ Current........................................180mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin TSSOP (derate 5.7mW/°C above +70°C) .........457mW
16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW
16-Pin Thin QFN (derate 16.9mW/°C above +70°C) ...1349mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
DC ELECTRICAL CHARACTERISTICS
(V+ = 2.3V to 5.5V, GND = 0, RESET = V+, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V+ = 3.3V, T
A
= +25°C.)
(Note 1)
PARAMETER SYM B O L CONDITIONS MIN TYP MAX UNITS
Supply Voltage V+ 2.3 5.5 V
V+ = 2.3V 19 30
V+ = 3.3V 29 40Supply Current I+
All outputs floating,
all inputs at V+ or GND,
f
SCL
= 400kHz
V+ = 5.5V 65 80
µA
V+ = 2.3V 1.5 3.4
V+ = 3.3V 1.7 3.9Standby Current
All outputs floating,
all inputs at V+ or GND,
f
SCL
= 0
V+ = 5.5V 2.1 5
µA
Power-On Reset Voltage 1.6 2.1 V
SCL, SDA
Input Voltage Low V
IL
0.8 V
Input Voltage High
V
IH
2V
Low-Level Output Voltage V
OIL
I
SINK
= 6mA 0.4 V
Leakage Current I
L
-1 +1 µA
Input Capacitance C
I
10 pF
I/Os
Input Voltage Low V
IL
0.8 V
Input Voltage High V
IH
2V
Input Leakage Current I
L
All inputs at V+ or GND -1 +1 µA
V+ = 2.3V, V
OL
= 0.5V 8 14
V+ = 3.3V, V
OL
= 0.5V 12.5 22
Low-Level Output Current I
OL
V+ = 5.5V, V
OL
= 0.5V 19 30
mA
V+ = 3.3V, V
OH
= 2.4V 6.5 11
High Output Current for I/O1–I/O7 I
OH
V+ = 5.5V, V
OH
= 4.5V 12.5 18
mA
AD0, AD1, AD2, AND RESET
Input Voltage Low 0.8 V
Input Voltage High 2V
MAX7310
2-Wire-Interfaced 8-Bit I/O Port Expander
with Reset
_______________________________________________________________________________________ 3
Note 1: All parameters are 100% production tested at T
A
= +25°C. Specifications over temperature are guaranteed by design.
Note 2: Minimum SCL clock frequency is limited by the MAX7310 bus timeout feature, which resets the serial bus interface if either
SDA or SCL is held low for a 30ms minimum.
Note 3: A master device must internally provide a hold time of at least 300ns for the SDA signal (referred to the V
IL
of the SCL signal) in
order to bridge the undefined region of SCL’s falling edge.
Note 4: t
F
measured between 90% to 10% of V+.
Note 5: Input filters on the SDA and SCL inputs suppress noise spikes less than 50ns.
DC ELECTRICAL CHARACTERISTICS (continued)
(V+ = 2.3V to 5.5V, GND = 0, RESET = V+, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V+ = 3.3V, T
A
= +25°C.)
(Note 1)
PARAMETER SYM B O L CONDITIONS MIN TYP MAX UNITS
Leakage Current -1 +1 µA
Input Capacitance 10 pF
AC ELECTRICAL CHARACTERISTICS
(V+ = 2.3V to 5.5V, GND = 0, RESET = V+, T
A
= -40°C to +125°C, unless otherwise noted.) (Note 1)
PARAMETER SYM B O L CONDITIONS MIN TYP MAX UNITS
SCL Clock Frequency f
SCL
(Note 2) 400 kHz
BUS Timeout t
TIMEOUT
30 60 ms
Bus Free Time Between STOP
and START Condition
t
BUF
Figure 2 1.3 µs
Hold Time (Repeated) START
Condition
t
HD
,
STA
Figure 2 0.6 µs
Repeated START Condition Setup
Time
t
SU
,
STA
Figure 2 0.6 µs
STOP Condition Setup Time t
SU
,
STO
Figure 2 0.6 µs
Data Hold Time t
HD
,
DAT
Figure 2 (Note 3) 0.9 µs
Data Setup Time t
SU
,
DAT
Figure 2 0.1 µs
SCL Low Period t
LOW
Figure 2 1.3 µs
SCL High Period t
HIGH
Figure 2 0.7 µs
SCL/SDA Fall Time (Transmitting) t
F
Figure 2 (Note 4) 250 ns
Pulse Width of Spike Supressed t
SP
(Note 5) 50 ns
PORT TIMING
Output Data Valid t
PV
Figure 9 1 µs
Input Data Setup Time t
PS
Figure 10 29 µs
Input Data Hold Time t
PH
Figure 10 0 µs
RESET
Reset Pulse Width 100 ns
P1-P3P4-P6P7-P9P10-P12P13-P15

MAX7310AUE+T

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Buy MAX7310AUE+T
Manufacturer:
Maxim Integrated
Description:
Interface - I/O Expanders 8-Bit I/O Port Expander
Lifecycle:
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