MAX7324AEG+ Maxim Integrated Products, MAX7324AEG+ Datasheet - Page 5

• Manufacturer Part Number: MAX7324AEG+
• Description: IC I/O EXPANDER I2C 8B 24QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX7324AEG+

• Interface: I²C
• Number Of I /o: 8
• Interrupt Output: Yes
• Frequency - Clock: 400kHz
• Voltage - Supply: 1.71 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 24-QSOP
• Includes: POR
• Operating Supply Voltage: 1.71 V to 5.5 V
• Power Dissipation: 761.9 mW
• Operating Temperature Range: - 40 C to + 125 C
• Input Voltage: 1.65 V to 1.197 V
• Maximum Clock Frequency: 400 KHz
• Mounting Style: SMD/SMT
• Output Voltage: 0.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX7324–MAX7327 family consists of four pin-
compatible, 16-port expanders that integrate the func-
tion of the MAX7320 and one of either the MAX7319,
MAX7321, MAX7322, or MAX7323.
The MAX7324 is a general-purpose port expander
operating from a +1.71V to +5.5V supply with eight
push-pull outputs and eight CMOS input ports that are
overvoltage protected to +6V.
Table 1. MAX7319–MAX7329 Family Comparison
16-PORT EXPANDERS
I
MAX7324
MAX7325
PART
2
MAX7324–MAX7327 Family Comparison
C Port Expander with Eight Push-Pull Outputs
ADDRESS
101xxxx
110xxxx
SLAVE
and
I
2
C
_______________________________________________________________________________________
Detailed Description
INPUTS
Up to 8
8
Functional Overview
INTERRUPT
INPUT
MASK
Yes
—
OUTPUTS
OPEN-
DRAIN
Up to 8
—
OUTPUTS
PUSH-
PULL
The MAX7324 is set to two of 32 I
(see Tables 2 and 3) using address select inputs AD0
and AD2, and is accessed over an I
up to 400kHz. The eight outputs and eight inputs have
different slave addresses. The eight push-pull outputs
have the 101xxxx addresses and the eight inputs have
the adresses with 110xxxx. The RST input clears the
serial interface in case of a bus lockup, terminating any
serial transaction to or from the MAX7324.
The input ports offer latching transition detection fea-
ture. All input ports are continuously monitored for
changes. An input change sets 1 of 8 flag bits that
identify the changed input(s). All flags are cleared upon
a subsequent read or write transaction to the MAX7324.
8
8
8 inputs and 8 push-pull outputs version:
8 input ports with programmable latching transition
detection interrupt and selectable pullups.
8 push-pull outputs with selectable default logic
levels.
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 if only for
a transient) since the ports were last read.
8 I/O and 8 push-pull outputs version:
8 open-drain I/O ports with latching transition
detection interrupt and selectable pullups.
8 push-pull outputs with selectable default logic
levels.
Open-drain outputs can level shift the logic-high
state to a higher or lower voltage than V+ using
external pullup resistors, but pullups draw current
when output is low. Any open-drain port can be used
as an input by setting the open-drain output to logic-
high. Transition flags identify which open-drain port
inputs have changed (even if only for a transient)
since the ports were last read.
and Eight Inputs
CONFIGURATION
2
C slave addresses
2
C serial interface
5