MAX7317 Maxim, MAX7317 Datasheet
MAX7317
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MAX7317 Summary of contents
Page 1
... The MAX7317 supports hot insertion. All port pins remain high impedance in power-down (V+ = 0V) with asserted on them. The MAX7317 is available in 16-pin thin QFN and QSOP packages and operates in the -40°C to +125°C range. For a similar part with constant-current outputs and 8-bit PWM controls, refer to the MAX6966/MAX6967 data sheet ...
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... Total GND Current ............................................................200mA 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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... CL CSS 20pF (Note 2) FT LOAD = +25°C. Specifications over temperature are guaranteed by design. A MAX7317 I/O REGISTER 4-WIRE SERIAL INTERFACE = +25°C.) A MIN TYP MAX UNITS 38 9.5 2.5 9.5 2 38.4 MAX7317 Block Diagram I/O PORTS ...
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... CS’s rising edge. I/O Ports can be configured as open-drain, current-sink outputs rated at 20mA 3–7, 9–13 1–5, 7–11 P0–P9 maximum CMOS inputs open-drain outputs. Loads should be connected to a supply voltage no higher than 7V GND Ground Serial-Data Output. The data into DIN is valid at DOUT 15.5 clock cycles later. Use this pin to ...
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... DIN except when CS is low. Note that the SPI protocol expects DOUT to be high impedance when the MAX7317 is not being accessed; DOUT on the MAX7317 is never high impedance www.maxim-ic.com/an1879 for ways to convert the MAX7317 to tri-state, if required. Controlling the MAX7317 requires sending a 16-bit Initial Power-Up word ...
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SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection Table 1. Register Address Map REGISTER Port P0 output level Port P1 output level Port P2 output level Port P3 output level Port P4 output level Port P5 output level Port ...
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... SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection Connecting Multiple MAX7317s to the 4-Wire Bus Multiple MAX7317s can be interfaced to a common SPI bus by connecting DIN inputs together, SCLK inputs Table 3. Input Ports Register REGISTER Read input ports P7–P0 Read input ports P9, P8 Table 4 ...
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... SCLK. When sending com- mands to daisy-chained MAX7317s, all devices are accessed at the same time. An access requires ( clock cycles, where n is the number of MAX7317s con- nected together. The serial interface speed (maximum SCLK) is limited to 10MHz when multiple devices are daisy-chained due to the DOUT propagation delay and DIN setup time ...
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... Figure 3. MAX7317 Daisy-Chain Connection CS t CSS SCLK t DS DIN D15 DOUT Figure 4. Timing Diagram CS SCLK D15 DIN D14 D13 D12 = 0 DOUT Figure 5. 16-Bit Write Transmission to the MAX7317 _______________________________________________________________________________________ DIN DOUT DIN CS CS MAX7317 MAX7317 SCLK SCLK D14 D1 D11 ...
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... N- DOUT N-31 N-30 N-29 Figure 6. Transmission of More than 16 Bits to the MAX7317 Applications Information The I/O ports P0–P9 remain high impedance with asserted on them when the MAX7317 is powered down (V+ = 0V). The MAX7317 can therefore be used in hot-swap applications. SPI Routing Considerations The MAX7317’s SPI interface is guaranteed to operate at 26Mbps ...
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... SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, QSOP .150", .025" LEAD PITCH 1 21-0055 ...
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... COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS. 9. DRAWING CONFORMS TO JEDEC MO220 REVISION C. 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. ...