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Renesas Electronics Components Datasheet

ISL32274E Datasheet

Quad Transmitter

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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 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 54load. This yields
better noise immunity than standard RS-485 ICs, or allows up to
six 120terminations 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
• 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
30
B
25
A
20
VID = ±1V
15
10
5
RO
0
-5
TIME (400ns/DIV)
FIGURE 1. EXCEPTIONAL Rx OPERATES AT 1Mbps EVEN WITH
±25V COMMON MODE VOLTAGE
25
12
0
-7
-12
-20
-25
STANDARD RS-485 CLOSEST
TRANSCEIVER COMPETITOR
ISL3148XE
FIGURE 2. TRANSCEIVERS DELIVER SUPERIOR COMMON
MODE RANGE vs. STANDARD RS-485 DEVICES
January 20, 2011
FN7638.2
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. 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.


Renesas Electronics Components Datasheet

ISL32274E Datasheet

Quad Transmitter

No Preview Available !

ISL31480E, ISL31483E, ISL31485E, ISL31486E
PART
NUMBER
Coming Soon
ISL31480E
ISL31483E
ISL31485E
Coming Soon
ISL31486E
HALF/FULL
DUPLEX
Half
Full
Half
Half
DATA RATE
(Mbps)
1
1
1
1
TABLE 1. SUMMARY OF FEATURES
SLEW-RATE
LIMITED?
Yes
EN
PINS?
Yes
HOT
PLUG
Yes
VL PIN?
Yes
POLARITY
REVERSAL
PINS?
No
Yes Yes Yes No
Yes
Tx Only
Yes
No
Yes Yes Yes Yes
Yes
Yes
Yes
QUIESCENT ICC
(mA)
2.3
2.3
2.3
2.3
LOW
POWER
SHDN?
Yes
Yes
No
Yes
PIN COUNT
10
14
8
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.
2 FN7638.2


Part Number ISL32274E
Description Quad Transmitter
Maker Renesas
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