1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
R
RE
D
GND1
nc
Vcc2
B
A
nc
GND2
DE
DWPACKAGE
Vcc1
GND1
GND2
GND2
GND1
functiondiagram
D
R
B
A
13
12
DE
6
5
3
4
RE
GALVANIC ISOLATION
ISO3082,ISO3088
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
R
RE
D
GND1
Y
Vcc2
B
Z
A
GND2
DE
DWPACKAGE
Vcc1
GND1
GND2
GND2
GND1
DE
5
D
6
R
3
4
RE
Y
Z
B
A
14
11
12
13
functiondiagram
N
GALVANIC ISOLATIO
ISO3080,ISO3086
ISO3080, ISO3086
ISO3082, ISO3088
www.ti.com
SLOS581C –MAY 2008–REVISED OCTOBER 2009
ISOLATED 5-V FULL AND HALF-DUPLEX RS-485 TRANSCEIVERS
Check for Samples: ISO3080, ISO3086 ISO3082, ISO3088
1
FEATURES
APPLICATIONS
• Security Systems
• 4000-V
PEAK
Isolation, 560-V
peak
V
IORM
• Chemical Production
– UL 1577, IEC 60747-5-2 (VDE 0884, Rev. 2),
• Factory Automation
IEC 61010-1, IEC 60950-1 and CSA
• Motor/Motion Control
Approved
• HVAC and Building Automation Networks
• Bus-Pin ESD Protection
• Networked Security Stations
– 16 kV HBM Between Bus Pins and GND2
– 6 kV HBM Between Bus Pins and GND1
ISO3080 Full-Duplex 200 kbps
• 1/8 Unit Load – Up to 256 Nodes on a Bus
ISO3086 Full-Duplex 20 Mbps
• Meets or Exceeds TIA/EIA RS-485
ISO3082 Half-Duplex 200 kbps
Requirements
ISO3088 Half-Duplex 20 Mbps
• Signaling Rates up to 20 Mbps
• Thermal Shutdown Protection
• Low Bus Capacitance – 16 pF (Typ)
• 50 kV/μs Typical Transient Immunity
• Fail-safe Receiver for Bus Open, Short, Idle
• 3.3-V Inputs are 5-V Tolerant
DESCRIPTION
The ISO3080, and ISO3086 are isolated full-duplex differential line drivers and receivers while the ISO3082, and
ISO3088 are isolated half-duplex differential line transceivers for TIA/EIA 485/422 applications.
These devices are ideal for long transmission lines since the ground loop is broken to allow for a much larger
common-mode voltage range. The symmetrical isolation barrier of the device is tested to provide 2500 Vrms of
isolation for 60s between the bus-line transceiver and the logic-level interface.
Any cabled I/O can be subjected to electrical noise transients from various sources. These noise transients can
cause damage to the transceiver and/or near-by sensitive circuitry if they are of sufficient magnitude and
duration. These isolated devices can significantly increase protection and reduce the risk of damage to
expensive control circuits.
The ISO3080, SO3082, ISO3086 and ISO3088 are qualified for use from –40°C to 85°C.
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 © 2008–2009, 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.
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