ISO15MDWR Datasheet, PDF (1/24 Pages) Texas Instruments – ISOLATED 3.3-V HALF AND FULL-DUPLEX RS-485 TRANSCEIVERS

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ISO15, ISO35
ISO15M, ISO35M
SLOS580F – MAY 2008 – REVISED JANUARY 2012
ISOLATED 3.3-V HALF AND FULL-DUPLEX RS-485 TRANSCEIVERS
Check for Samples: ISO15, ISO35, ISO15M, ISO35M
FEATURES
1
• 4000-V_PK V_IOTM, 560-V_PK V_IORM per IEC
60747-5-2 (VDE 0884, Rev 2)
• UL 1577, IEC 61010-1, IEC 60950-1 and CSA
Approved
• 1/8 Unit Load – Up to 256 Nodes on a Bus
• Meets or Exceeds TIA/EIA RS-485
Requirements
• Signaling Rates up to 1 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
APPLICATIONS
• Security Systems
• Chemical Production
• Factory Automation
• Motor/motion Control
• HVAC and Building Automation Networks
• Networked Security Stations
ISO15
DW PACKAGE
function diagram
Vcc1 1
GND1 2
R3
RE 4
DE 5
D6
GND1 7
GND1 8
16
15
Vcc2
GND2
R3
14 ^nc
RE ⁴
13 B
DE ⁵
12 A
11 nc
D6
10 GND2
9 GND2
13
B
12
A
DESCRIPTION
The ISO15 is an isolated half-duplex differential line
transceiver while the ISO35 is an isolated full-duplex
differential line driver and receiver for TIA/EIA
485/422 applications. The ISO15M and ISO35M have
extended ambient temperature ratings of –55°C to
125°C while the ISO15 and ISO35 are specified
over –40°C to 85°C.
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
barrier of the device is tested to provide isolatlion of
4000 V_PK per VDE and 2500 V_RMS per UL and CSA
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.
DW PACKAGE
ISO35
function diagram
Vcc1 1
GND1 2
R3
RE 4
DE 5
D6
GND1 7
GND1 8
16 Vcc2
15 GND2
14 A
R3
13 B
4
RE
12 Z
DE ⁵
11 Y
10
9
GND2
GND2
D6
14
A
13 _B
12 _Z
11
Y
PRODUCT
ISO15
ISO35
ISO15M
ISO35M
FOOTPRINT
Half Duplex
Full Duplex
Half Duplex
Full Duplex
TEMP RATING
–40°C to 85°C
–40°C to 85°C
–55°C to 125°C
–55°C to 125°C
MARKING
ISO15
ISO35
ISO15M
ISO35M
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
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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