Datasheet

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R
RE
D
GND1
nc
Vcc2
B
A
nc
GND2
DE
DWPACKAGE
Vcc1
GND1
GND2
GND2
GND1
functiondiagram
DE
D
B
A
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12
R
5
3
6
4
RE
GALVANIC ISOLATION
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RE
D
GND1
Y
Vcc2
B
Z
A
GND2
DE
DWPACKAGE
Vcc1
GND1
GND2
GND2
GND1
DE
5
D
6
R
3
4
RE
Y
Z
B
A
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11
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functiondiagram
N
GALVANIC ISOLATIO
ISO15, ISO35
ISO15M, ISO35M
www.ti.com SLOS580F – MAY 2008– REVISED JANUARY 2012
ISOLATED 3.3-V HALF AND FULL-DUPLEX RS-485 TRANSCEIVERS
Check for Samples: ISO15, ISO35, ISO15M, ISO35M
1
FEATURES
DESCRIPTION
The ISO15 is an isolated half-duplex differential line
• 4000-V
PK
V
IOTM
, 560-V
PK
V
IORM
per IEC
transceiver while the ISO35 is an isolated full-duplex
60747-5-2 (VDE 0884, Rev 2)
differential line driver and receiver for TIA/EIA
• UL 1577, IEC 61010-1, IEC 60950-1 and CSA
485/422 applications. The ISO15M and ISO35M have
Approved
extended ambient temperature ratings of –55°C to
125°C while the ISO15 and ISO35 are specified
• 1/8 Unit Load – Up to 256 Nodes on a Bus
over –40°C to 85°C.
• Meets or Exceeds TIA/EIA RS-485
Requirements
These devices are ideal for long transmission lines
since the ground loop is broken to allow for a much
• Signaling Rates up to 1 Mbps
larger common-mode voltage range. The symmetrical
• Thermal Shutdown Protection
barrier of the device is tested to provide isolatlion of
• Low Bus Capacitance – 16 pF (Typ)
4000 V
PK
per VDE and 2500 V
RMS
per UL and CSA
between the bus-line transceiver and the logic-level
• 50 kV/μs Typical Transient Immunity
interface.
• Fail-safe Receiver for Bus Open, Short, Idle
Any cabled I/O can be subjected to electrical noise
• 3.3-V Inputs are 5-V Tolerant
transients from various sources. These noise
transients can cause damage to the transceiver
APPLICATIONS
and/or near-by sensitive circuitry if they are of
• Security Systems
sufficient magnitude and duration. These isolated
devices can significantly increase protection and
• Chemical Production
reduce the risk of damage to expensive control
• Factory Automation
circuits.
• Motor/motion Control
• HVAC and Building Automation Networks
• Networked Security Stations
ISO15 ISO35
PRODUCT FOOTPRINT TEMP RATING MARKING
ISO15 Half Duplex –40°C to 85°C ISO15
ISO35 Full Duplex –40°C to 85°C ISO35
ISO15M Half Duplex –55°C to 125°C ISO15M
ISO35M Full Duplex –55°C to 125°C ISO35M
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008–2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.