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ISL31480E Datasheet

(ISL31480E - ISL31486E) RS-485/RS-422 Transceivers

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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 protected against faults 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 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 54Ω
load. This yields better noise immunity than standard
RS-485 ICs, or allows up to six 120Ω 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 (down to 1.8V) in mixed
voltage systems. See Table 1 on page 2 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 . . . . . . . . 10µA
Applications*(see page 19)
• Utility Meters/Automated Meter Reading Systems
• High Node Count Systems
• PROFIBUS® and Field Bus Networks, and Factory
Automation
• Security Camera Networks
• Building Lighting and Environmental Control Systems
• Industrial/Process Control Networks
Exceptional Rx Operates at
1Mbps Even With ±25V
Common Mode Voltage
30
B
25
A
VID = ±1V
20
15
10
5
RO
0
-5
TIME (400ns/DIV)
Transceivers Deliver Superior
Common Mode Range vs.
Standard RS-485 Devices
25
12
0
-7
-12
-20
-25
STANDARD RS-485 CLOSEST
TRANSCEIVER COMPETITOR
ISL3148XE
June 25, 2010
FN7638.0
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2010. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.


Intersil Electronic Components Datasheet

ISL31480E Datasheet

(ISL31480E - ISL31486E) RS-485/RS-422 Transceivers

No Preview Available !

ISL31480E, ISL31483E, ISL31485E, ISL31486E
www.DataSheet4U.com
PART HALF/FULL
NUMBER DUPLEX
Coming
Soon
ISL31480E
Half
ISL31483E
Full
ISL31485E
Half
Coming
Soon
ISL31486E
Half
DATA
RATE
(Mbps)
1
1
1
1
TABLE 1. SUMMARY OF FEATURES
SLEW-
RATE
EN
LIMITED? PINS?
Yes Yes
HOT
PLUG
Yes
VL
PIN?
Yes
POLARITY
LOW
REVERSAL QUIESCENT POWER
PINS?
ICC (mA) SHDN?
No 2.3 Yes
PIN
COUNT
10
Yes Yes Yes No
Yes Tx Only Yes No
Yes Yes Yes Yes
Yes
Yes
Yes
2.3 Yes 14
2.3 No 8
2.3 Yes 10, 12, 14
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART
MARKING
TEMP. RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
Coming Soon
ISL31480EIRTZ
480E
-40 to +85
10 Ld TDFN
L10.3x3A
Coming Soon
ISL31480EIUZ
1480E
-40 to +85
10 Ld MSOP
M10.118
ISL31483EIBZ
ISL31483 EIBZ
-40 to +85
14 Ld SOIC
M14.15
ISL31485EIBZ
31485 EIBZ
-40 to +85
8 Ld SOIC
M8.15
Coming Soon
ISL31486EIBZ
ISL31486 EIBZ
-40 to +85
14 Ld SOIC
M14.15
Coming Soon
ISL31486EIRTZ
486E
-40 to +85
12 Ld TDFN
L12.4x3A
Coming Soon
ISL31486EIUZ
1486E
-40 to +85
10 Ld MSOP
M10.118
NOTES:
1. Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach
materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both
SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see device information page for ISL31480E, ISL31483E, ISL31485E, and
ISL31486E. For more information on MSL please see techbrief TB363.
Pin Configurations
ISL31483E
(14 LD SOIC)
TOP VIEW
ISL31485E
(8 LD SOIC)
TOP VIEW
RINV 1
RO 2
RE 3
DE 4
DI 5
GND 6
GND 7
R
D
14 VCC
13 VCC
12 A
11 B
10 Z
9Y
8 DINV
RO 1
INV 2
DE 3
DI 4
R
D
8 VCC
7 B/Z
6 A/Y
5 GND
2 FN7638.0
June 25, 2010


Part Number ISL31480E
Description (ISL31480E - ISL31486E) RS-485/RS-422 Transceivers
Maker Intersil Corporation
Total Page 24 Pages
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