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參數(shù)資料
| 型號(hào)： | MAX1608 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 16-Bit Bus Transceivers And Registers With 3-State Outputs 56-TSSOP -40 to 85 |
| 中文描述： | 八通道、SMBus至并行輸入/輸出擴(kuò)展器 |
| 文件頁(yè)數(shù)： | 5/16頁(yè) |
| 文件大小： | 291K |
| 代理商： | MAX1608 |
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M
Octal SMBus-to-Parallel I/O Expanders
_______________________________________________________________________________________
5
V
500mV/div
V+
2V/div
M
PULL-UP = 10k
to V+
MAX1608
IO_ POWER-UP RESPONSE
Typical Operating Characteristics (continued)
(V+ = +5V, T
A
= +25°C, unless otherwise noted.)
IO_
2V/div
ALERT
5V/div
M
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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