參數(shù)資料
型號： MAX1480
廠商： Maxim Integrated Products, Inc.
元件分類： 溫度/濕度傳感器
英文描述： Digital Temperature Sensor with 2-Wire Interface 8-SOIC -40 to 125
中文描述： 完成后，隔離的RS-485/RS-422數(shù)據(jù)接口
文件頁數(shù)： 1/21頁
文件大?。?/td> 487K
代理商： MAX1480
_________________General Description
The MAX1480A/MAX1480B/MAX1480C/MAX1490A/
MAX1490B are complete, electrically isolated, RS-485/
RS-422 data-communications interface solutions in a
hybrid microcircuit. Transceivers, optocouplers, and a
transformer provide a complete interface in a standard
DIP package. A single +5V supply on the logic side pow-
ers both sides of the interface.
The MAX1480B/MAX1480C/MAX1490B feature reduced-
slew-rate drivers that minimize EMI and reduce reflec-
tions caused by improperly terminated cables, allowing
error-free data transmission at data rates up to 250kbps.
The MAX1480A/MAX1490A driver slew rate is not limited,
allowing transmission rates up to 2.5Mbps. The
MAX1480A/B/C are designed for half-duplex communi-
cation, while the MAX1490A/B feature full-duplex com-
munication.
Drivers are short-circuit current limited and protected
against excessive power dissipation by thermal shut-
down circuitry that places the driver outputs into a high-
impedance state. The receiver input has a fail-safe
feature that guarantees a known output (RO low for the
MAX1480A/B/C, RO high for the MAX1490A/B/C) if the
input is open circuit.
The MAX1480A/MAX1480B/MAX1480C/MAX1490A/
MAX1490B typically withstand 1600V
RMS
(1 minute) or
2000V
RMS
(1 second). Their isolated outputs meet all
RS-485/RS-422 specifications. The MAX1480A/B/C are
available in a 28-pin DIP package, and the MAX1490A/B
are available in a 24-pin DIP package.
________________________Applications
Isolated RS-485/RS-422 Data Interface
Transceivers for EMI-Sensitive Applications
Industrial-Control Local Area Networks
Automatic Test Equipment
HVAC/Building Control Networks
Next-Generation Device Features
For Integrated ESD Protection
MAX1480E/MAX1490E: ±15kV ESD-Protected,
Isolated RS-485/RS-422 Data Interfaces
For Space-Constrained Applications
MAX3157: High CMRR, RS-485 Transceiver with
±50V Isolation
_______________Ordering Information
PART
TEMP RANGE
MAX1480A
CPI
0°C to +70°C
MAX1480AEPI
-40°C to +85°C
M
Complete, Isolated RS-485/RS-422
Data Interface
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
1
24
23
22
21
20
19
18
17
2
3
4
5
6
7
8
AC1
AC2
ISO V
CC1
ISO RO DRV
D2
D1
A
B
Z
Y
SD
FS
GND1
16
15
14
13
9
10
11
12
ISO COM1
ISO DI DRV
ISO V
CC2
ISO RO LED
GND2
RO
DI
DIP
V
CC2
V
CC3
V
CC4
V
CC1
MAX1490A/B
M
M
M
TOP VIEW
ISOLATION BARRIER
Pin Configurations
19-0259; Rev 4; 10/03
Ordering Information continued at end of data sheet.
Data rate for “A” parts is up to 2.5Mbps. Data rate for “B” and
“C” parts is up to 250kbps.
Pin Configurations continued at end of data sheet.
PIN-PACKAGE
28 Wide Plastic DIP
28 Wide Plastic DIP
_____________________Selection Table
PART
HALF/
FULL
DUPLEX
DATA
RATE
(MBPS)
SLEW-
RATE
LIMITED
DRIVER
ENABLE
TIME
(μS)
MAX1480A
MAX1480B
MAX1480C
MAX1490A
MAX1490B
Half
Half
Half
Full
Full
2.5
0.25
0.25
2.5
0.25
No
Yes
Yes
No
Yes
0.2
35
0.5
—
—
相關(guān)PDF資料
PDF描述
MAX1480E-MAX1490E 15kV ESD-Protected, Isolated RS-485/RS-422
MAX1480ECCPI 15kV ESD-Protected, Isolated RS-485/RS-422
MAX1490EAEPG 15kV ESD-Protected, Isolated RS-485/RS-422
MAX1480ECEPI 15kV ESD-Protected, Isolated RS-485/RS-422
MAX1480CCPI Complete, Isolated RS-485/RS-422 Data Interface
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