Datasheet

Table 1. MAX7319–MAX7329 Family Comparison (continued)
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.
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Maxim Integrated │ 6
MAX7322 I
2
C Port Expander with
4 Push-Pull Outputs and 4 Inputs