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參數(shù)資料
| 型號： | ISL31485EIBZ-T7A |
| 廠商： | Intersil |
| 文件頁數(shù)： | 1/24頁 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485 FAULT PROT 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 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： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOICN |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | ISL31485EIBZ-T7ADKR |
1
Fault Protected, Extended CMR, RS-485/RS-422
Transceivers with Cable Invert
ISL31480E, ISL31483E, ISL31485E, ISL31486E
The ISL3148xE 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.
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 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 ISL31483E, ISL31485E and ISL31486E 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.
The ISL31480E and ISL31486E feature a logic supply (VL) pin
that sets the VOH of the Rx outputs, and the switching points of
the logic input pins, to be compatible with a lower supply voltage
for key features and configurations by device number.
Features
Fault Protected RS-485 Bus Pins . . . . . . . . . . . . . . up to ±60V
Extended Common Mode Range . . . . . . . . . . . . . . . . . . . ±25V
More Than Twice the Range Required for RS-485
Cable Invert Pins (Except ISL31480)
Corrects for Reversed Cable Connections While Maintaining Rx
Full Fail-safe Functionality
Logic Supply (VL) Pin (ISL31480E, ISL31486E)
Simplifies Interface to Lower Voltage Logic Devices
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
-5
0
5
10
15
20
25
30
TIME (400ns/DIV)
V
O
LTA
G
E
(
V
)
B
VID = ±1V
A
RO
FIGURE 1. EXCEPTIONAL Rx OPERATES AT 1Mbps EVEN WITH
±25V COMMON MODE VOLTAGE
ISL3148XE
COMMON
MODE
RAN
GE
CLOSEST
COMPETITOR
STANDARD RS-485
TRANSCEIVER
-25
-20
-12
-7
0
12
25
FIGURE 2. TRANSCEIVERS DELIVER SUPERIOR COMMON
MODE RANGE vs. STANDARD RS-485 DEVICES
January 20, 2011
FN7638.2
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. 2010, 2011. 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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL31486E | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Fault Protected, Extended CMR, RS-485/RS-422 Transceivers with Cable Invert |
| ISL31486EIBZ | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Fault Protected, Extended CMR, RS-485/RS-422 Transceivers with Cable Invert |
| ISL31486EIRTZ | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Fault Protected, Extended CMR, RS-485/RS-422 Transceivers with Cable Invert |
| ISL31486EIUZ | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Fault Protected, Extended CMR, RS-485/RS-422 Transceivers with Cable Invert |
| ISL31490E | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:?±60V Fault Protected, 5V, RS-485/RS-422 Transceivers with ?±25V Common Mode Range |
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