MAX7319 Maxim, MAX7319 Datasheet
MAX7319
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MAX7319 Summary of contents
Page 1
... SDA, SCL, AD0, AD2, INT, and RST remain high impedance in power-down ( with up to +6V asserted on them. The MAX7319 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 Eight Inputs and 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 Eight Inputs and Maskable Transition Detection (T = +25°C, unless otherwise noted.) A STANDBY CURRENT vs. TEMPERATURE 2.0 1.8 1.6 1.4 1.2 1 +3. +2.5V 0.8 0.6 0.4 0.2 0 ...
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... The MAX7328 and MAX7329 are second sources to the PCF8574 and PCF8574A. The MAX7324–MAX7327 family consists of four pin- compatible, 16-port expanders that integrate the func- tions of the MAX7320 and one of either the MAX7319, MAX7321, MAX7322, or MAX7323. Table 1. MAX7319–MAX7329 Family Comparison 2 I ...
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... Pullups are enabled on the input ports in groups of four (see Table 3). The MAX7319, MAX7321, MAX7322, and MAX7323 use a different range of slave addresses (110xxxx) than the MAX7320 (101xxxx). The MAX7319 slave address is determined on each I transmission, regardless of whether the transmission is actually addressing the MAX7319. The MAX7319 distin- Initial Power-Up ...
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... SCL are terminated with pullup resistors to a different supply voltage than the MAX7319’s supply voltage, and if that pullup supply rises later than the MAX7319’s sup- ply, then SDA or SCL may appear at power- connected to GND. In such applications, use the four ...
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... The master initiates all data transfers to and from the MAX7319 and generates the SCL clock that synchronizes the data transfer (Figure 1). 40kΩ INPUT PULLUP ENABLED ...
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... SCL output. Each transmission consists of a START condition sent by a master, followed by the MAX7319’s 7-bit slave address plus R/W bit, then 1 or more data bytes, and finally a STOP condition (Figure 2). ...
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... R/W bit low for a write command, and high for a read com- mand. The 1st (A6), 2nd (A5), and 3rd (A4) bits of the MAX7319 slave address are always 1, 1, and 0. Connect AD2 and AD0 to GND, V+ SDA, or SCL to select slave address , bits A3, A2, A1, and A0 ...
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... INT remains high until the STOP condition. When the master reads 2 bytes from the MAX7319 and subsequently issues a STOP condition (Figure 7), the MAX7319 transmits the current port data, followed by the transition flags. The transition flags are cleared, and transition detection reset ...
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... START CONDITION P = STOP CONDITION RST, SCL, SDA, AD0, and AD2 remain high impedance with up to +6V asserted on them when the MAX7319 is powered down (V+ = 0). The MAX7319 can therefore be used in hot-swap applications. Each of the input ports I0–I7 has a protection diode to GND (Figure 9). When a port input is driven to a voltage lower than GND, the protection diode clamps the volt- age to a diode drop below GND ...
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... TQFN version, connect the exposed pad to GND. Compatibility with MAX6965, MAX7315, The MAX7319 is subset pin compatible with the MAX6965, MAX7315, and MAX7316. The pin differ- ences are shown in Table 4. The MAX7319 is not soft- ware compatible with MAX6965, MAX7315, or MAX7316. In many cases possible to design a PC Pin Configurations ...
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... I C Port Expander with Eight Inputs and Maskable Transition Detection AD0 AD2 SCL SDA RST Chip Information PROCESS: BiCMOS CONNECT EXPOSED PAD TO GND 14 ______________________________________________________________________________________ INPUT INPUT CONTROL PORTS FILTER POWER-ON RESET MAX7319 Functional Diagram INT ...
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... I C Port Expander with Eight Inputs and (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.) MARKING D/2 D 0.10 C PKG 8L 3x3 REF. MIN. NOM. MAX. MIN. A 0.70 0.75 0.80 0.70 b 0.25 0.30 0.35 0.20 D 2.90 3.00 3.10 2.90 E 2.90 3.00 3.10 2.90 e 0.65 BSC. ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied ...