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MAX1608EEE Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX1608EEE Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 16 page Octal SMBus-to-Parallel I/O Expanders _______________________________________________________________________________________ 5 VIO_ 500mV/div V+ 2V/div PULL-UP = 10k Ω to V+ MAX1608 IO_ POWER-UP RESPONSE Typical Operating Characteristics (continued) (V+ = +5V, TA = +25°C, unless otherwise noted.) IO_ 2V/div ALERT 5V/div 200ns/div IO_ DRIVEN EXTERNALLY ALERT DELAY (IO_ FALLING) NAME FUNCTION 1– 8 IO0– IO7 Combined Input/Output. Open-drain output. Can withstand +28V. 9 GND Ground PIN 10, 11 ADD0, ADD1 SMBus Address Select. See Table 1. 12 SMBDATA SMBus Serial-Data Input/Output. Open-drain output. Requires external pull-up resistor. 16 V+ Supply Voltage Input, +2.7V to +5.5V. Bypass to GND with a 0.1µF capacitor. 15 SMBSUS SMBus Suspend-Mode Control Input. The device will enter the state previously stored in the suspend-mode registers if low, or enter the state previously stored in the normal-mode registers if high. 14 SMBCLK SMBus Serial Clock Input 13 ALERT Active-Low Interrupt Output. Open-drain output. Requires external pull-up resistor. Pin Description Detailed Description The MAX1608/MAX1609 convert 2-wire SMBus serial data into eight latched parallel outputs (IO0–IO7). These devices are intended for general-purpose remote I/O expansion. Each device has eight high-voltage open- drain outputs that double as TTL-level logic inputs. Typical applications range from high-side MOSFET load- switch drivers in power-management systems, to push- button switch monitors, to general-purpose digital I/Os. The MAX1608/MAX1609 include two complete sets of registers, each consisting of one output data register to set the output states and two interrupt mask registers. The SMBSUS line selects which set of registers control the device state. The input register is used to perform readback of the actual IO states. The MAX1608/MAX1609 operate from a single +2.7V to +5.5V supply with a typical quiescent current of 2.5µA, making them ideal for portable applications. Additionally, the devices include an ALERT function to alert the master of change of condition (Figure 1). |
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