MAX7326 Maxim, MAX7326 Datasheet
MAX7326
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MAX7326 Summary of contents
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... The MAX7326 is one device in a family of pin-compatible port expanders with a choice of input ports, open-drain I/O ports, and push-pull output ports (see Table 1). ...
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... Total GND Current ...........................................................100mA 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 ...
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I C Port Expander with 12 Push-Pull Outputs PORT AND INTERRUPT INT TIMING CHARACTERISTICS (V+ = +1.71V to +5.5V -40°C to +125°C, unless otherwise noted. Typical values are +3.3V PARAMETER SYMBOL Port ...
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I C Port Expander with 12 Push-Pull Outputs and 4 Inputs (T = +25°C, unless otherwise noted.) A STANDBY CURRENT 2.0 1.8 1.6 1.4 1.2 1 +2.5V 0.8 0.6 0.4 0.2 0 -40 -25 - ...
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... _______________________________________________________________________________________ sink a total of 100mA and source a total of 50mA from all 12 combined outputs. The MAX7326 is set to two (see Tables 2 and 3) using address inputs AD0 and AD2, and is accessed over an I 400kHz. Eight outputs use a different slave address from the other four outputs and four inputs. Eight push- pull outputs, O8– ...
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... I C Port Expander with 12 Push-Pull Outputs and 4 Inputs Table 1. MAX7319–MAX7329 Family Comparison (continued INPUT PART SLAVE INPUTS INTERRUPT ADDRESS MASK MAX7326 4 101xxxx and 110xxxx MAX7327 8-PORT EXPANDERS MAX7319 110xxxx 8 MAX7320 101xxxx — MAX7321 110xxxx MAX7322 110xxxx 4 6 _______________________________________________________________________________________ ...
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... I/O high), and whether pullups are enabled. However, at power-up, the I bus interface lines are high impedance at the pins of (1.6V max), the POR every device (master or slave) connected to the bus, including the MAX7326. This is guaranteed as part of , the POR 2 the I C specification. Therefore, when address inputs AD0 and AD2 are connected to SDA or SCL during power-up, they appear to be connected to V+ ...
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... I C Port Expander with 12 Push-Pull Outputs and 4 Inputs Table 2. MAX7326 Address Map for Ports O0, O1, I2–I5, O6, and O7 PIN DEVICE ADDRESS CONNECTION AD2 AD0 SCL GND SCL SCL SCL SCL SDA ...
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... I C Port Expander with 12 Push-Pull Outputs Table 3. MAX7326 Address Map for Outputs O8–O15 PIN CONNECTION AD2 AD0 A6 A5 SCL GND 1 0 SCL SCL SCL 1 0 SCL SDA 1 0 SDA GND 1 0 SDA SDA SCL 1 0 SDA SDA 1 0 GND ...
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... The master initiates all data transfers to and from the MAX7326 and generates the SCL clock that synchronizes the data transfer (Figure 1). SDA operates as both an input and an open-drain out- put. A pullup resistor, typically 4.7kΩ ...
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... INT output are cleared when the master acknowledges the slave address byte, but the previous transition flag data is sent as the second byte. CLOCK PULSE A 2-byte read from the group B ports of the MAX7326 repeatedly returns the status of the eight output ports read back as inputs ...
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... S MAX7326 SLAVE ADDRESS SCL PORTS t IV INT OUTPUT Figure 6. Reading Group A Ports of the MAX7326 (1 Data Byte) 12 ______________________________________________________________________________________ 2 C STOP A read from the group A ports of the MAX7326 starts with the master transmitting the port group’s slave address with the R/W bit set to high. The MAX7326 ...
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... ACKNOWLEDGE FROM MAX7326 S MAX7326 SLAVE ADDRESS SCL PORTS t IV INT OUTPUT Figure 7. Reading Group A Ports of the MAX7326 (2 Data Bytes START CONDITION P = STOP CONDITION A = ACKNOWLEDGE ACKNOWLEDGE FROM MAX7326 MAX7326 SLAVE ADDRESS S SCL Figure 8. Reading Group B Ports of the MAX7326 ______________________________________________________________________________________ ...
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... Figure 10. Writing to the Group B Ports of the MAX7326 14 ______________________________________________________________________________________ A write to the group B ports of the MAX7326 starts with the master transmitting the group’s slave address with the R/W bit set low. The MAX7326 acknowledges the slave address and samples the ports during the acknowledge bit ...
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... When the MAX7326 is powered down (V+ = 0), each input port appears as a 40kΩ resistor in series with a diode con- nected to zero. Input ports are protected to +6V under any of these circumstances (Figure 12) ...
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... Any combi- nation of outputs can be used as part of a load-sharing design, because any combination of ports can be set or cleared at the same time by writing to the MAX7326. Do not exceed a total sink current of 100mA for the device. The MAX7326 must be protected from the negative- ...
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... V+ SDA SCL AD0 O15 O14 O13 O12 O11 O10 O9 O8 and 4 Inputs Typical Application Circuit 3.3V V+ SCL SDA O15 RST O14 INT O13 O12 MAX7326 O11 OUTPUT O10 OUTPUT O9 OUTPUT O8 OUTPUT O7 OUTPUT O6 OUTPUT AD0 O1 OUTPUT AD2 O0 OUTPUT GND Chip Information ...
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... I C Port Expander with 12 Push-Pull Outputs and 4 Inputs (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 18 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, 12, 16, 20, 24, 28L THIN QFN, 4x4x0.8mm ...
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... I C Port Expander with 12 Push-Pull Outputs (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ and 4 Inputs Package Information (continued) PACKAGE OUTLINE, 12, 16, 20, 24, 28L THIN QFN, 4x4x0.8mm ...
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... For the latest package outline information www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © ...