參數(shù)資料
型號: ISL32483EIBZ
廠商: Intersil
文件頁數(shù): 1/17頁
文件大?。?/td> 0K
描述: IC TXRX RS485 FAULT PROT 14SOIC
產(chǎn)品培訓(xùn)模塊: Solutions for Industrial Control Applications
標(biāo)準(zhǔn)包裝: 50
類型: 收發(fā)器
驅(qū)動器/接收器數(shù): 1/1
規(guī)程: RS422,RS485
電源電壓: 4.5 V ~ 5.5 V
安裝類型: 表面貼裝
封裝/外殼: 14-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 14-SOIC
包裝: 管件
1
Fault Protected, Extended CMR, RS-485/RS-422
Transceivers with Cable Invert and ±16.5kV ESD
ISL32483E, ISL32485E
The ISL3248xE are fault protected, 5V powered differential
transceivers that exceed the RS-485 and RS-422 standards for
balanced communication. The RS-485 transceiver pins (driver
outputs and receiver inputs) are fault protected up to ±60V and
are protected against ±16.5kV ESD strikes without latch-up.
Additionally, the extended common mode range allows these
transceivers to operate in environments with common mode
voltages up to ±25V (>2X the RS-485 requirement), making
this fault-protected RS-485 family one of the most robust on
the market.
Transmitters (Tx) deliver an exceptional 2.5V (typical)
differential output voltage into the RS-485 specified 54 load.
This yields better noise immunity than standard RS-485 ICs or
allows up to six 120 terminations in star network topologies.
Receiver (Rx) inputs feature a “Full Fail-Safe” design, which
ensures a logic high Rx output if Rx inputs are floating,
shorted, or on a terminated but undriven (idle) bus.
The ISL32483E and ISL32485E include cable invert functions
that reverse the polarity of the Rx and/or Tx bus pins in case
the cable is misconnected. Unlike competing devices, Rx full
fail-safe operation is maintained even when the Rx input
polarity is switched.
For fault protected RS-485 transceivers without the cable
invert function, please see the ISL32470E and ISL32490E
data sheets.
Features
Fault Protected RS-485 Bus Pins. . . . . . . . . . . . . . Up to ±60V
Extended Common Mode Range . . . . . . . . . . . . . . . . . . . ±25V
More Than Twice the Range Required for RS-485
±16.5kV HBM ESD Protection on RS-485 Bus Pins
Cable Invert Pins
Corrects for Reversed Cable Connections While Maintaining
Rx Full Fail-Safe Functionality
Full Fail-Safe (Open, Short, Terminated) RS-485 Receivers
1/4 Unit Load (UL) for Up to 128 Devices on the Bus
High Rx IOL for Opto-Couplers in Isolated Designs
Hot Plug Circuitry: Tx and Rx Outputs Remain Three-State
During Power-up/Power-down
Slew Rate Limited RS-485 Data Rate . . . . . . . . . . . . . 1Mbps
Low Quiescent Supply Current . . . . . . . . . . . . . . . . . . . 2.3mA
Ultra Low Shutdown Supply Current . . . . . . . . . . . . . . . . 10A
Applications
Utility Meters/Automated Meter Reading Systems
High Node Count RS-485 Systems
PROFIBUS and RS-485 Based Field Bus Networks, and
Factory Automation
Security Camera Networks
Building Lighting and Environmental Control Systems
Industrial/Process Control Networks
FIGURE 1. EXCEPTIONAL Rx OPERATES AT 1Mbps EVEN WITH
±25V COMMON MODE VOLTAGE
FIGURE 2. TRANSCEIVERS DELIVER SUPERIOR COMMON MODE
RANGE vs STANDARD RS-485 DEVICES
-5
0
5
10
15
20
25
30
TIME (400ns/DIV)
VOL
TAG
E
(V)
B
VID = ±1V
A
RO
ISL3248XE
COMMON
MODE
RAN
GE
CLOSEST
COMPETITOR
STANDARD RS-485
TRANSCEIVER
-25
-20
-12
-7
0
12
25
March 27, 2012
FN7785.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Copyright Intersil Americas Inc. 2011, 2012. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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