參數(shù)資料
型號(hào): MAX1609
廠商: Maxim Integrated Products, Inc.
英文描述: Octal SMBus-to-Parallel I/O Expanders
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): 1/16頁(yè)
文件大?。?/td> 291K
代理商: MAX1609
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
M
Octal SMBus-to-Parallel I/O Expanders
________________________________________________________________
Maxim Integrated Products
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.
1
19-1639; Rev 0; 1/00
PART
MAX1608
EEE
MAX1609
EEE
-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
μ
F
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.
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