MAX7328AAP+ ,I²C Port Expanders with Eight I/O PortsApplications● RAIDMAX7328AWE -40°C to +125°C 16 Wide SO● ServersMAX7328AAP -40°C to +125°C 20 SSOP● ..
MAX7328AWE+ ,I²C Port Expanders with Eight I/O PortsFeatures2● 100kHz, 5.5V-Tolerant, I C-Compatible Serial The MAX7328/MAX7329 are 2-wire serial-inter ..
MAX732CPA ,+5V/Adjustable Step-Up Current-Mode DC-DC ConvertersELECTRICAL CHARACTERISTICS
(Circuit of Figure 2, V+ = 5V, ILOAD = 0mA, TA = TMIN to TMAX, unless ..
MAX732CWE ,+12 V step-up current-mode PWM regulatorapplications information,
refer to AN-4.1, MAX732 E V Surface-Mount Evaluation
Board and Flash EE ..
MAX732CWE ,+12 V step-up current-mode PWM regulatorFeatures
. Load Current: Guaranteed to 200mA with No
External MOSFET (125mA tor MAX733)
. 170k ..
MAX732CWE ,+12 V step-up current-mode PWM regulatorApplications
Flash Memory Programming Power Supply
Portable Instruments
Distributed Power Syst ..
MB54502PFV ,Low noise amplifier (2 circuits)applications such as handy phones and car phones. Both of the amplifiers achieve low current consu ..
MB54609PFV ,Quadrature Modulator IC (With 1.0 GHz Up-converter)FUJITSU SEMICONDUCTORDS04-23509-1EDATA SHEETASSP for TelephoneBIPOLARQuadrature Modulator IC(With ..
MB6021A ,SINGLE CHIP CODEC WITH FILTERSFUJITSU hTCRoirLECTR()NTCS 31.5 D, " 37u=17aa 001.71.55 =1 "hu
April 1990
Edition 3.0
DA TA ..
MB6021AP ,SINGLE CHIP CODEC WITH FILTERSFUNCTIONAL DESCRIPTION
The simplified
MB6022 , Product Summary Prototyping Kits
MB6022 , Product Summary Prototyping Kits
MAX7328AAP+-MAX7328AWE+
I²C Port Expanders with Eight I/O Ports
General DescriptionThe MAX7328/MAX7329 are 2-wire serial-interfaced
peripherals with eight I/O ports. Any port can be used as
a logic input or an open-drain output.
All input ports are continuously monitored for state chang-
es (transition detection). Transitions are alerted through
the open-drain, 5.5V-tolerant INT output.
The MAX7328 and MAX7329 versions differ only by their
slave ID address ranges. The MAX7328 has a slave ID
range of 0100xxx (0x20 to 0x27). The MAX7329 has a
slave ID range of 0111xxx (0x38 to 0x3F).
For a similar part with overvoltage-protected I/Os and a
bus RST input that clears the I2C serial interface, refer to
the MAX7321 data sheet. The MAX7328/MAX7329 are
members of a family of pin-compatible port expanders
with a choice of input ports, open-drain I/O ports, and
push-pull output ports (see the Selector Guide).
Applications●RAID●Servers●Notebooks●Industrial
Features●100kHz, 5.5V-Tolerant, I2C-Compatible Serial
Interface●2.5V to 5.5V Operating Supply Voltage Range●Low-Standby-Current Consumption of 10μA (max)●I2C Bus-to-Parallel-Port Expander●Open-Drain Interrupt Output INT●8-Bit Remote I/O Port for the I2C Bus●Latched Outputs with High-Current-Drive Capability
for Directly Driving LEDs●Address by Three Hardware Address Pins for Use of
Up to Eight Devices (Up to 16 Using Both MAX7328/
MAX7329)●Second Sources to PCF8574 and PCF8574A
Pin Configurations continued at end of data sheet.
*Future product—contact factory for availability.
Devices are available in both leaded and lead-free packaging.
Specify lead free by adding the + symbol at the end of the part
number when ordering.
PARTTEMP RANGEPIN-PACKAGE
MAX7328AWE-40°C to +125°C16 Wide SO
MAX7328AAP-40°C to +125°C20 SSOP
MAX7328AUP*-40°C to +125°C20 TSSOP
MAX7329AWE-40°C to +125°C16 Wide SO
MAX7329AAP-40°C to +125°C20 SSOP
MAX7329AUP*-40°C to +125°C20 TSSOP
GND
+2.5V TO +5.5V
SCLSCL
SDA
AD1
AD0
SDAI/O
I/OAD2
INT
I/O
I/O
I/O
I/O
I/O
I/O
INT
47nF
MAX7328
MAX7329TOP VIEW
SDA
SCL
INTP0
AD2
AD1
AD0P3P4GND
WIDE SO
MAX7328
MAX7329
MAX7328/MAX7329I2C Port Expanders with Eight I/O Ports
Typical Application Circuit
Pin Conigurations
Ordering Information
(Voltage with respect to GND.)
V+, SCL, SDA, AD0, AD1, AD2, INT ........................-0.3V to +6V
P0–P7 ...........................................................-0.3V to (V+ + 0.3V)
P0–P7, SDA, INT Output Sink Current ................................25mA
SCL, SDA, AD0, AD1, AD2, INT, P0–P7 Input Current .......20mA
Total V+ Current................................................................100mA
Total GND Current ............................................................100mA
Continuous Power Dissipation (TA = +70°C)
16-Pin Wide SO (derate 9.5mW/°C over +70°C).........762mW
20-Pin SSOP (derate 8mW/°C over +70°C).................640mW
20-Pin TSSOP (derate 11mW/°C over +70°C).............879mW
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
(Typical Operating Circuit, V+ = 2.5V to 5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = 5V, TA = +25°C.)
(Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSOperating Supply VoltageV+2.55.5V
Supply Current (Interface
Running)I+fSCL = 100kHz, other digital inputs at V+ or
GND40100µA
Standby Current (Interface Idle)I+SCL, SDA, and other digital inputs at V+ or
GND110µA
Power-On Reset VoltageVPOR1.32.4V
Input Low Voltage
SDA, SCL, AD0, AD1, AD2, P0–P7VIL0.3 x V
Input High Voltage
SDA, SCL, AD0, AD1, AD2, P0–P7VIH0.7 x V
Maximum Allowed Input Current
through Protection Diode P0–P7IPPROT±400µA
Output Low Current SDAIOLSDAVSDA = 0.4V3mA
Input Leakage Current
SDA, SCL, AD0, AD1, AD2, P0–P7IIH, IILPin at V+ or GND-0.25+0.25µA
Input Capacitance
SDA, SCL, AD0, AD1, AD2CI2CPin at GND (Note 2)7pF
Port Output-Low Output Current
P0–P7IOLVOL = 1V, V+ = 5V1025mA
Ports Output-High Output Current
P0–P7IOHVOH = GND30300µA
Output-High Transient Pullup
Current P0–P7IOHtSources during acknowledge, VOH = GND,
V+ = 2.5V1mA
Input Capacitance P0–P7CP(Note 2)10pF
Interrupt Output-Low Current INTIOLINTVOLINT = 0.4V1.6mA
MAX7328/MAX7329I2C Port Expanders with Eight I/O Ports
Absolute Maximum RatingsStresses 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.
Electrical Characteristics
(Typical Operating Circuit, V+ = 2.5V to 5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = 5V, TA = +25°C.)
(Note 1)
(Typical Operating Circuit, V+ = 2.5V to 5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = 5V, TA = +25°C.)
(Note 1)
Note 1: All parameters are tested at TA = +25°C. Specifications over temperature are guaranteed by design.
Note 2: Guaranteed by design.
Note 3: A master device must provide a hold time of at least 300ns for the SDA signal (referred to VIL of the SCL signal) to bridge
the undefined region of SCL’s falling edge.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSPort Output Data ValidtPPVCL ≤ 100pF4µs
Port Input Setup TimetPSUCL ≤ 100pF0µs
Port Input Hold TimetPHCL ≤ 100pF4µs
INT Input Data Valid TimetIVCL ≤ 100pF4µs
INT Reset Delay Time from
AcknowledgetIRCL ≤ 100pF4µs
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSSerial Clock FrequencyfSCL100kHz
Tolerable Spike Width on BustSP(Note 2)100ns
Bus Free Time between STOP
and STARTtBUF4.7µs
START or Repeated START Setup
TimetSU, STA4.7µs
START or Repeated START Hold
TimetHD, STA4µs
SCL Clock Low PeriodtLOW4.7µs
SCL Clock High PeriodtHIGH4µs
SDA and SCL Rise TimetR(Note 2)1µs
SDA and SCL Fall TimetF(Note 2)300ns
Data Setup TimetSU, DAT250ns
Data Hold TimetHD, DAT(Note 3)0.9µs
SCL Low to Data-Out ValidtVD, DATSCL low to SDA output valid3.4µs
STOP Condition Setup TimetSU, STO4µs
Capacitive Load for Each Bus LineCb(Note 2)400pF
MAX7328/MAX7329I2C Port Expanders with Eight I/O Ports
Port And Interrupt INT Timing Characteristics
Timing Characteristics
Figure 1. Block Diagram
PINNAMEFUNCTIONSOSSOP/TSSOP1, 2, 36, 7, 9AD0, AD1,
AD2
Address Inputs. AD0, AD1, and AD2 set device slave address. Connect AD0, AD1,
and AD2 to either GND or V+. See Tables 1 and 2.
4–7, 9–1210, 11, 12, 14,
16, 17, 19, 20P0–P7Input/Output Ports. P0–P7 are open-drain I/Os.15GNDGround1INTInterrupt Output. INT is an open-drain output rated at 5.5V.2SCLI2C-Compatible Serial-Clock Input4SDAI2C-Compatible Serial-Data I/O5V+Positive Supply Voltage. Bypass V+ to GND with a 0.047µF ceramic capacitor.3, 8, 13, 18N.C.No Connection. Internally not connected.
P0–P7
100µA
GND
CLKQ
CLKQ
WRITE PULSE
READ PULSE
DATA FROM
SHIFT REGISTER
DATA TO
SHIFT REGISTER
POWER-ON
RESET
TO INTERRUPT
LOGIC
MAX7328
MAX7329MAX7328/MAX7329I2C Port Expanders with Eight I/O Ports
Pin Description
Detailed Description
Functional OverviewThe MAX7328/MAX7329 are general-purpose port
expanders operating from a 2.5V to 5.5V supply that pro-
vide eight open-drain input/output ports with a 20mA sink
capability. The devices are rated to sink up to 100mA at
once, from any combination of ports. The port outputs can
drive loads connected to any voltage up to the MAX7328/
MAX7329’s supply voltage.
The MAX7328 is set to one of eight I2C slave addresses
0x20 to 0x27, and the MAX7329 is set to one of eight I2C
slave addresses, 0x38 to 0x3F, using the address inputs
AD2, AD1, and AD0. The parts are accessed over an I2C
serial interface up to 100kHz.
Any port can be configured as a logic input by setting
the port output logic-high. The MAX7328/MAX7329 do
not distinguish between a port used as an input and a
port used as an output that happens to be high. When a
MAX7328 or MAX7329 is read through the serial inter-
When an I/O port is high, an internal pullup to V+ is active.
The pullup is enabled only when the output is high, and
is turned off when the output is low to reduce quiescent
current. An additional strong pullup to V+ allows fast-rising
edges into heavily loaded outputs. These strong pullups
turn on when an output is written high, and are switched
off by the falling edge of SCL (Figure 2).
The MAX7328/MAX7329 provide an open-drain output
(INT). An interrupt is generated by any rising or falling
edge of the port inputs in the input mode. After time, tIV,
the signal INT is valid.
Resetting and reactivating the interrupt circuit is achieved
when data on the port is changed to the original setting
or data is read from or written to the port that generated
the interrupt.
Resetting occurs as follows:In the READ mode at the acknowledge bit after the
rising edge of the SCL signalIn the WRITE mode at the acknowledge bit after the
Table 1. MAX7328 Slave ID Address Selection
PIN CONNECTIONDEVICE ADDRESSPORTS POWER-UP DEFAULT
AD2AD1AD0A6A5A4A3A2A1A0P7P6P5P4P3P2P1P0GNDGNDGND010000011111111
GNDGNDV+010000111111111
GNDV+GND010001011111111
GNDV+V+010001111111111GNDGND010010011111111GNDV+010010111111111V+GND010011011111111V+V+010011111111111
PIN CONNECTIONDEVICE ADDRESSPORTS POWER-UP DEFAULT
AD2AD1AD0A6A5A4A3A2A1A0P7P6P5P4P3P2P1P0GNDGNDGND011100011111111
GNDGNDV+011100111111111
GNDV+GND011101011111111
GNDV+V+011101111111111GNDGND011110011111111GNDV+011110111111111V+GND011111011111111V+V+011111111111111
Table 2. MAX7329 Slave ID Address SelectionMAX7328/MAX7329I2C Port Expanders with Eight I/O Ports
Interrupts that occur during the acknowledge clock pulse
may be lost (or very short) due to the resetting of the
interrupt during this pulse. Each change of the I/Os after
resetting is detected and, after the next rising clock edge,
is transmitted as INT.
MAX7328/MAX7329 Initial Power-UpOn power-up, the power-up default states of the eight I/O
ports are high, and therefore, can be used as inputs or out-
puts. The interrupt output INT is reset, and INT goes high
(high impedance if an external pullup resistor is not fitted).
Serial Interface
Serial AddressingThe MAX7328/MAX7329 operate as slave devices that
send and receive data through an I2C-compatible, 2-wire
interface. The interface uses a serial-data line (SDA) and
a serial-clock line (SCL) to achieve bidirectional communi-
cation between master(s) and slave(s). A master initiates
all data transfers to and from the MAX7328 or MAX7329,
and generates the SCL clock that synchronizes the data
transfer (Figure 3).
The MAX7328 or MAX7329 SDA line operates as both
an input and an open-drain output. A pullup resistor,
Figure 2. Repeated Write Operation Showing Transient Pullup Current
Figure 3. 2-Wire Serial-Interface Timing Details
SCL
SDA
START CONDITIONR/WACKNOWLEDGE
FROM SLAVE
SLAVE ADDRESS02345678AAPP3
IOH0
OUTPUT
VOLTAGE
P3 PULLUP
OUTPUT CURRENT
IOHt
DATA TO PORTDATA TO PORT
SCL
SDA tF
tBUF
START
CONDITION
STOP
CONDITION
REPEATED START CONDITION START CONDITION
tSU, STO
tHD, STA
tSU, STA
tVD, DAT
tHD, DAT
tSU, DAT tLOW
tHIGH
tHD, STA
MAX7328/MAX7329I2C Port Expanders with Eight I/O Ports
