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MAX1608EEE Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX1608EEE Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 16 page General Description The MAX1608/MAX1609 provide remote input/output (I/O) expansion through an SMBus™ 2-wire serial interface. Each device has eight high-voltage open-drain outputs that double as TTL-level logic inputs, providing continuous bidirectional capabilities. The open-drain outputs tailor the MAX1608/MAX1609 for use in load-switching and other level-shifting applications as well as general-purpose I/O applications. Two complete sets of registers allow the device and its outputs to be toggled between two states using the SMBSUS input, without the inherent latency of reprogram- ming outputs over the serial bus. The eight I/O lines are continuously monitored and can be used as inputs. Each line can generate asynchronous maskable interrupts on the falling edge, the rising edge, or both edges. For load-switching applications, the MAX1608 is designed to drive N-channel MOSFETs, and its outputs are low upon power-up; the MAX1609 is designed to drive P- channel MOSFETs, and its I/Os are high impedance upon power-up. Other features of both devices include thermal- overload and output-overcurrent protection, ultra-low sup- ply current, and a wide +2.7V to +5.5V supply range. The MAX1608/MAX1609 are available in space-saving 16-pin QSOP packages. Applications Parallel I/O Expansion Power-Plane Switching Notebook and Desktop Computers Servers and Workstations Notebook Docking Stations Industrial Equipment Features o Serial-to-Parallel or Parallel-to-Serial Conversions o 8 General-Purpose Digital I/O Pins (withstand +28V) o SMBus 2-Wire Serial Interface o Supports SMBSUS Asynchronous Suspend o 9 Pin-Selectable Slave Addresses o Outputs High Impedance on Power-Up (MAX1609) o Outputs Low on Power-Up (MAX1608) o 2.5µA Supply Current o +2.7V to +5.5V Supply Range o 16-Pin QSOP Package Octal SMBus-to-Parallel I/O Expanders ________________________________________________________________ Maxim Integrated Products 1 19-1639; Rev 0; 1/00 PART MAX1608EEE MAX1609EEE -40°C to +85°C -40°C to +85°C TEMP. RANGE PIN-PACKAGE 16 QSOP 16 QSOP Ordering Information Typical Operating Circuits MAX1609 IO1 SMBUS TO/ FROM HOST +2.7V TO +5.5V V+ IO3 IO2 GND LOAD1 LOAD2 LOAD3 ALERT 0.1 µF P-CH 100k 100k 100k SMBCLK SMBDATA SMBSUS ADD IO7 ADD1 Typical Operating Circuits continued at end of data sheet. 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 IO0 V+ SMBSUS SMBCLK ALERT SMBDATA ADD1 ADD0 GND TOP VIEW MAX1608 MAX1609 QSOP IO1 IO2 IO5 IO3 IO4 IO6 IO7 Pin Configuration SMBus is a trademark of Intel Corp. For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. |
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