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MAX7322ATE+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
MAX7322
I
2
C Port Expander with
4 Push-Pull Outputs and 4 Inputs
4 _______________________________________________________________________________________
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
0
0.4
0.2
1.0
0.8
0.6
1.2
1.4
1.8
1.6
2.0
-40 -10 5-25 203550658095110125
STANDBY CURRENT vs. TEMPERATURE
MAX7322 toc01
TEMPERATURE (
°
C)
STANDBY CURRENT (μA)
V+ = +3.3V
V+ = +2.5V
V+ = +5.0V
V+ = +1.71V
f
SCL
= 0kHz
0
20
10
40
30
50
60
-40 -10 5 20-25 3550658095110125
SUPPLY CURRENT vs. TEMPERATURE
MAX7322 toc02
TEMPERATURE (
°
C)
SUPPLY CURRENT (μA)
V+ = +3.3V
V+ = +5.0V
V+ = +1.71V
V+ = +2.5V
f
SCL
= 400kHz
OUTPUT VOLTAGE LOW
vs. TEMPERATURE
TEMPERATURE (°C)
OUTPUT VOLTAGE LOW (V)
MAX7322 toc03
-40 -25 -10 5 20 35 50 65 80 95 110 125
0
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
V+ = +3.3V
I
SINK
= 15mA
V+ = +5.0V
I
SINK
= 20mA
V+ = +2.5V
I
SINK
= 10mA
V+ = +1.71V
I
SINK
= 5mA
OUTPUT VOLTAGE HIGH
vs. TEMPERATURE
TEMPERATURE (°C)
OUTPUT VOLTAGE HIGH (V)
MAX7322 toc04
-40 -25 -10 5 20 35 50 65 80 95 110 125
0
1
2
3
4
5
6
V+ = +3.3V
I
SOURCE
= 5mA
V+ = +5.0V
I
SOURCE
= 10mA
V+ = +2.5V
I
SOURCE
= 5mA
V+ = +1.71V
I
SOURCE
= 2mA
Pin Description
PIN
QSOP TQFN
NAME FUNCTION
1, 3 15, 1 AD0, AD2
Address Inputs. Select device slave address with AD0 and AD2. Connect AD0 and
AD2 to either GND, V+, SCL, or SDA to give four logic combinations (see Table 2).
216 RST Reset Input. Active Low. Drive RST low to clear the 2-wire interface.
4, 5, 11, 12, 2, 3, 9, 10 O0, O1, O6, O7 Push-Pull Output Ports
6, 7, 9, 10 4, 5, 7, 8 I2–I5 Input Ports. I2 to I5 are CMOS-logic inputs protected to +6V.
8 6 GND Ground
13 11 INT Interrupt Output, Active Low. INT is an open-drain output.
14 12 SCL I
2
C-Compatible Serial Clock Input
15 13 SDA I
2
C-Compatible Serial Data I/O
16 14 V+ P osi ti ve S up p l y V ol tag e. Byp ass V + to G N D w i th a cer am i c cap aci tor of at l east 0.047µF.
— EP EP Exposed Paddle. Connect exposed pad to GND.
Detailed Description
MAX7319–MAX7329 Family Comparison
The MAX7319–MAX7323 family consists of five pin-
compatible, eight-port expanders. Each version is opti-
mized for different applications. The MAX7328 and
MAX7329 are industry-standard parts.
The MAX7324–MAX7327 family consists of four pin-
compatible, 16-port expanders that integrate the func-
tions of the MAX7320 and one of either MAX7319,
MAX7321, MAX7322, or MAX7323.
Functional Overview
The MAX7322 is a general-purpose port expander
operating from +1.71V to +5.5V supply that provides
four push-pull output ports with 20mA sink, 10mA
source drive capability, and four input ports that are
overvoltage protected to +6V independent of supply volt-
age. The MAX7322 is rated to sink a total of 100mA and
source a total of 50mA from all four combined outputs.
The MAX7322 is set to one of 16 I
2
C slave addresses
(0x60 to 0x6F) using address inputs AD2 and AD0, and
is accessed over an I
2
C serial interface up to 400kHz.
The RST input clears the serial interface in case of a
bus lockup, terminating any serial transaction to or from
the MAX7322.
MAX7322
I
2
C Port Expander with
4 Push-Pull Outputs and 4 Inputs
_______________________________________________________________________________________ 5
PART
I
2
C
SLAVE
ADDRESS
INPUTS
INPUT
INTERRUPT
MASK
OPEN-
DRAIN
OUTPUTS
PUSH-
PULL
OUTPUTS
I
2
C DATA
WRITE
I
2
C DATA
READ
APPLICATION
8-PORT EXPANDERS
MAX7319 110xxxx 8 Yes — —
<I7–I0
interrupt
mask>
<I7–I0 port
inputs>
<I7–I0
transition
flags>
Input-only versions:
8 input ports with
programmable latching
transition detection interrupt
and selectable pullups.
Offers maximum versatility
for automatic input
monitoring. An interrupt
mask selects which inputs
cause an interrupt on
transitions, and transition
flags identify which inputs
have changed (even
momentarily) since the
ports were last read.
MAX7320 101xxxx — — — 8
<O7–O0
port
outputs>
<O7-O0
port
inputs>
Output-only versions:
8 push-pull outputs with
selectable power-up default
levels.
Push-pull outputs offer
faster rise time than open-
drain outputs, and require
no pullup resistors.
Table 1. MAX7319–MAX7329 Family Comparison
MAX7322
I
2
C Port Expander with
4 Push-Pull Outputs and 4 Inputs
6 _______________________________________________________________________________________
PART
I
2
C
SLAVE
ADDRESS
INPUTS
INPUT
INTERRUPT
MASK
OPEN-
DRAIN
OUTPUTS
PUSH-
PULL
OUTPUTS
I
2
C DATA
WRITE
I
2
C DATA
READ
APPLICATION
MAX7321 110xxxx Up to 8 — Up to 8 —
<P7–P0
port
outputs>
<P7–P0
port
inputs>
<P7–P0
transition
flags>
I/O versions:
8 open-drain I/O ports with
latching transition detection
interrupt and selectable
pullups.
Open-drain outputs can
level shift the logic-high
state to a higher or lower
voltage than V+ using
external pullup resistors.
Any port can be used as an
input by setting the open-
drain output to logic-high.
Transition flags identify
which inputs have changed
(even momentarily) since
the ports were last read.
MAX7322 110xxxx 4 Yes — 4
<O7, O6
outputs,
I5–I2
interrupt
mask, O1,
O0
outputs>
<O7, O6,
I5–I2, O1,
O0 port
inputs>
<0, 0, I5–I2
transition
flags, 0, 0>
4 input-only, 4 output-only
versions:
4 input ports with
programmable latching
transition detection interrupt
and selectable pullups;
4 push-pull outputs with
selectable power-up default
levels.
MAX7323 110xxxx Up to 4 — Up to 4 4
<port
outputs>
<O7, O6,
P5–P2, O1,
O0 port
inputs>
<0, 0,
P5–P2
transition
flags, 0, 0>
4 I/O, 4 output-only
versions:
4 open-drain I/O ports with
latching transition detection
interrupt and selectable
pullups.
4 push-pull outputs with
selectable power-up default
levels.
MAX7328
MAX7329
0100xxx
0111xxx
Up to 8 — Up to 8 —
<P7–P0
port
outputs>
<P7–P0
port
inputs>
8 open-drain I/O ports with
nonlatching transition
detection interrupt and
pullups on all ports.
All ports power up as inputs
(or logic-high outputs).
Any port can be used as an
input by setting the open-
drain output to logic-high.
Table 1. MAX7319–MAX7329 Family Comparison (continued)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

MAX7322ATE+T

Mfr. #:
Buy MAX7322ATE+T
Manufacturer:
Maxim Integrated
Description:
Interface - I/O Expanders I2C Port Expander w/4 P-P Out & 4 In
Lifecycle:
New from this manufacturer.
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