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MAX7301ATL+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
General Description
The MAX7301 compact, serial-interfaced I/O expander
(or general-purpose I/O (GPIO) peripheral) provides
microprocessors with up to 28 ports. Each port is indi-
vidually user configurable to either a logic input or logic
output.
Each port can be configured either as a push-pull logic
output capable of sinking 10mA and sourcing 4.5mA,
or a Schmitt logic input with optional internal pullup.
Seven ports feature configurable transition detection
logic, which generates an interrupt upon change of port
logic level. The MAX7301 is controlled through an
SPI™-compatible 4-wire serial interface.
The MAX7301AAX and MAX7301ATL have 28 ports and
are available in 36-pin SSOP and 40-pin TQFN packages,
respectively. The MAX7301AAI has 20 ports and is avail-
able in a 28-pin SSOP package.
For a 2-wire I
2
C-interfaced version, refer to the
MAX7300 data sheet.
For a pin-compatible port expander with additional
24mA constant-current LED drive capability, refer to the
MAX6957 data sheet.
Applications
White Goods
Automotive
Gaming Machines
Industrial Controllerss
System Monitoring
Features
♦ High-Speed 26MHz SPI-/QSPI-™/MICROWIRE™-
Compatible Serial Interface
♦ 2.5V to 5.5V Operation
♦ -40°C to +125°C Temperature Range
♦ 20 or 28 I/O Ports, Each Configurable as
Push-Pull Logic Output
Schmitt Logic Input
Schmitt Logic Input with Internal Pullup
♦ 11µA (max) Shutdown Current
♦ Logic Transition Detection for Seven I/O Ports
MAX7301
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and
28-Port I/O Expander
________________________________________________________________ Maxim Integrated Products 1
19-2438; Rev 6; 4/06
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.
Pin Configurations appear at end of data sheet.
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX7301AAI+
-40°C to +125°C
28 SSOP A28-1
MAX7301AAX+
-40°C to +125°C
36 SSOP A36-4
MAX7301ATL+
-40°C to +125°C
40 TQFN
T4066- 5
P5
P4
P7
P8
P6
P10
P9
P12
P13
P11
P15
P14
P17
P18
P16
P20
P19
P22
P23
P21
36
2
3
33
4
34
35
29
27
31
24
25
22
21
23
V+
GND
GND
SCLK
DIN
DOUT
P30
P29
P31
P27
P28
P25
P24
P26
32
30
26
5
7
9
28
6
8
11
10
12
14
15
13
17
16
19
20
18
CS
MAX7301
3V
SSOP
CHIP SELECT
DATA IN
CLOCK IN
DATA OUT
I/O 4
I/O 5
I/O 6
I/O 7
I/O 8
I/O 9
I/O 10
I/O 11
I/O 12
I/O 13
I/O 14
I/O 15
I/O 16
I/O 17
I/O 18
I/O 19
I/O 20
I/O 21
I/O 22
I/O 23
I/O 24
I/O 25
I/O 26
I/O 27
I/O 28
I/O 29
I/O 30
I/O 31
47nF
1
ISET
39kΩ
Typical Operating Circuit
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
+Denotes lead-free package.
MAX7301
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and
28-Port I/O Expander
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.
(Voltage with respect to GND.)
V+ .............................................................................-0.3V to +6V
All Other Pins................................................-0.3V to (V+ + 0.3V)
P4–P31 Current ................................................................±30mA
GND Current .....................................................................800mA
Continuous Power Dissipation (T
A
= +70°C)
28-Pin SSOP (derate 9.5mW/°C above +70°C) ...........762mW
36-Pin SSOP (derate 11.8mW/°C above +70°C) .........941mW
40-Pin TQFN (derate 26.3mW/°C above +70°C) ....2963.0mW
Operating Temperature Range
(T
MIN
, T
MAX
) ..................................................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(Typical Operating Circuit, V+ = 2.5V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Operating Supply Voltage V+
2.5
5.5 V
T
A
= +25°C 5.5 8
T
A
= - 40° C to + 85°C
10Shutdown Supply Current I
SHDN
All digital inputs at V+
or GND
T
A
= T
MIN
to T
MAX
11
µA
T
A
= +25°C
180
230
T
A
= - 40° C to + 85°C
250
Operating Supply Current
(Output High)
I
GPOH
All ports programmed
as outputs high, no
load, all other inputs
at V+ or GND
T
A
= T
MIN
to T
MAX
270
µA
T
A
= +25°C
170
210
T
A
= - 40° C to + 85°C
230
Operating Supply Current
(Output Low)
I
GPOL
All ports programmed
as outputs low, no
load, all other inputs
at V+ or GND
T
A
= T
MIN
to T
MAX
240
µA
T
A
= +25°C
110
135
T
A
= - 40° C to + 85°C
140
Operating Supply Current
(Input)
I
GPI
All ports programmed
as inputs without
pullup, ports, and all
other inputs at V+ or
GND
T
A
= T
MIN
to T
MAX
145
µA
INPUTS AND OUTPUTS
Logic High Input Voltage
Port Inputs
V
IH
0.7 ✕
V+
V
Logic Low Input Voltage
Port Inputs
V
IL
0.3 ✕
V+
V
Input Leakage Current I
IH
, I
IL
GPIO inputs without pullup,
VPORT = V+ to GND
-100
±1
+100
nA
V+ = 2.5V 12 19 30
GPIO Input Internal Pullup to V+
I
PU
V+ = 5.5V 80
120
180
µA
Hysteresis Voltage GPIO Inputs
∆V
I
0.3 V
GPIO outputs, I
SOURCE
= 2mA,
T
A
= -40°C to +85°C
V+ -
0.7
Output High Voltage V
OH
GPIO outputs, I
SOURCE
= 1mA,
T
A
= T
MIN
to T
MAX
(Note 2)
V+ -
0.7
V
MAX7301
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and
28-Port I/O Expander
_______________________________________________________________________________________ 3
Note 1: All parameters tested at T
A
= +25°C. Specifications over temperature are guaranteed by design.
Note 2: Guaranteed by design.
ELECTRICAL CHARACTERISTICS (continued)
(Typical Operating Circuit, V+ = 2.5V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Port Sink Current I
OL
V
PORT
= 0.6V 2 10 18 mA
Output Short-Circuit Current I
OLSC
Port configured output low, shorted to V+
2.75
11
20.00
mA
V+ ≤ 3.3V 1.6
Input High-Voltage SCLK, DIN,
CS
V
IH
V+ > 3.3V 2
V
Input Low-Voltage SCLK, DIN,
CS
V
IL
0.6 V
Input Leakage Current SCLK,
DIN, CS
I
IH
, I
IL
-50 +50 nA
Output High-Voltage DOUT V
OH
I
SOURCE
= 1.6mA
V+ -
0.5
V
Output Low-Voltage DOUT V
OL
I
SINK
= 1.6mA 0.4 V
TIMING CHARACTERISTICS (Figure 3)
(V+ = 2.5V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
CLK Clock Period t
CP
38.4
ns
CLK Pulse Width High t
CH
19 ns
CLK Pulse Width Low t
CL
19 ns
CS Fall to SCLK Rise Setup Time
t
CSS
9.5 ns
CLK Rise to CS Rise Hold Time
t
CSH
0ns
DIN Setup Time t
DS
9.5 ns
DIN Hold Time t
DH
0ns
Output Data Propagation Delay
t
DO
C
LOAD
= 25pF 21 ns
Minimum CS Pulse High t
CSW
19 ns
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

MAX7301ATL+T

Mfr. #:
Buy MAX7301ATL+T
Manufacturer:
Maxim Integrated
Description:
Interface - I/O Expanders 2.5-5.5V 20/28 Port I/O Expander
Lifecycle:
New from this manufacturer.
Delivery:
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