ISOW1432 Series

Low emissions, 5-kVrms, 12-Mbps isolated RS-485 transceiver with integrated DC/DC converter

Catalog

Low emissions, 5-kVrms, 12-Mbps isolated RS-485 transceiver with integrated DC/DC converter

Part	Pulse Width Distortion (Max) [Max]	Type	Data Rate	Supplier Device Package	Number of Channels	Technology	Voltage - Supply [Max]	Voltage - Supply [Min]	Rise / Fall Time (Typ)	Rise / Fall Time (Typ) [Max]	Propagation Delay tpLH / tpHL (Max) [Max]	Channel Type	Mounting Type	Common Mode Transient Immunity (Min) [Min]	Inputs - Side 1/Side 2 [custom]	Inputs - Side 1/Side 2 [custom]	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case [y]	Package / Case [y]	Function	Utilized IC / Part	Supplied Contents	Secondary Attributes
Texas Instruments ISOW1432BDFMR	40 ns	RS422 RS485	12 Mbps	20-SOIC	4	Magnetic Coupling	1.89 V 5.5 V	1.71 V 2.25 V	4 ns	4 ns	610 ns	Unidirectional	Surface Mount	100 kV/µs	2	2	125 °C	-40 °C	20-SOIC	0.295 in	7.5 mm
Texas Instruments ISOW1432DFMEVM		Interface																				RS-422 RS-485 Transceiver	ISOW1432	Board(s)	On-Board LEDs Test Points
Texas Instruments ISOW1432DFMR	40 ns	RS422 RS485	12 Mbps	20-SOIC	4	Magnetic Coupling	1.89 V 5.5 V	1.71 V 2.25 V	4 ns	4 ns	610 ns	Unidirectional	Surface Mount	100 kV/µs	2	2	125 °C	-40 °C	20-SOIC	0.295 in	7.5 mm

Catalog

Low emissions, 5-kVrms, 12-Mbps isolated RS-485 transceiver with integrated DC/DC converter

Key Features

• Meets or exceeds the requirements of the TIA/ EIA-485A standardData ratesISOW1412 : 500 kbpsISOW1432 : 12 MbpsIntegrated low-emissions DC-DC converter with low-emissions, low-noiseMeets CISPR 32 Class B and EN 55032 Class B with margin on a two-layer PCBLow frequency power converter at 25 MHz enabling low noise performanceAdditional 2 Mbps GPIO channelHigh efficiency output powerTypical efficiency: 46%VISOOUTaccuracy: ±5%Additional output current: 20 mAIndependent power supply for RS-485 & DC-DCLogic supply (VIO): 1.71 V to 5.5 VPower converter supply ( VDD): 3 V to 5.5 VRS-485 with PROFIBUS compatibilityOpen, short, and idle bus failsafe1/8 unit load: up to 256 nodes on busGlitch-free power up and power downReinforced and Basic isolation optionsHigh CMTI: 100-kV/µs (typical)High ESD bus protectionHBM: ±16 kVIEC 61000-4-2 contact discharge: ±8 kVOperating temperature range: -40°C to 125°CCurrent limit and thermal shutdown20-pin wide SOIC packageSection 8.6:VDE reinforced and basic insulation per DIN VDE V 0884-11:2017-01UL 1577 component recognition programIEC 62368-1, IEC 61010-1, IEC 60601-1 and GB 4943.1-2011 certificationsMeets or exceeds the requirements of the TIA/ EIA-485A standardData ratesISOW1412 : 500 kbpsISOW1432 : 12 MbpsIntegrated low-emissions DC-DC converter with low-emissions, low-noiseMeets CISPR 32 Class B and EN 55032 Class B with margin on a two-layer PCBLow frequency power converter at 25 MHz enabling low noise performanceAdditional 2 Mbps GPIO channelHigh efficiency output powerTypical efficiency: 46%VISOOUTaccuracy: ±5%Additional output current: 20 mAIndependent power supply for RS-485 & DC-DCLogic supply (VIO): 1.71 V to 5.5 VPower converter supply ( VDD): 3 V to 5.5 VRS-485 with PROFIBUS compatibilityOpen, short, and idle bus failsafe1/8 unit load: up to 256 nodes on busGlitch-free power up and power downReinforced and Basic isolation optionsHigh CMTI: 100-kV/µs (typical)High ESD bus protectionHBM: ±16 kVIEC 61000-4-2 contact discharge: ±8 kVOperating temperature range: -40°C to 125°CCurrent limit and thermal shutdown20-pin wide SOIC packageSection 8.6:VDE reinforced and basic insulation per DIN VDE V 0884-11:2017-01UL 1577 component recognition programIEC 62368-1, IEC 61010-1, IEC 60601-1 and GB 4943.1-2011 certifications

Description

The ISOW14x2 devices are galvanically-isolated RS-485/RS-422 transceiver s with a built-in isolated DC-DC converter, that eliminates the need for a separate isolated power supply in space constrained isolated designs. The low-emissions, isolated DC-DC converter meets CISPR 32 radiated emissions Class B standard with just two ferrite beads on a simple two-layer PCB. Additional 20 mA output current can be used to power other circuits on the board. An integrated 2 Mbps GPIO channel helps remove any additional digital isolator or optocoupler for diagnotstics, LED indication or supply monitoring. The ISOW14x2 devices are galvanically-isolated RS-485/RS-422 transceiver s with a built-in isolated DC-DC converter, that eliminates the need for a separate isolated power supply in space constrained isolated designs. The low-emissions, isolated DC-DC converter meets CISPR 32 radiated emissions Class B standard with just two ferrite beads on a simple two-layer PCB. Additional 20 mA output current can be used to power other circuits on the board. An integrated 2 Mbps GPIO channel helps remove any additional digital isolator or optocoupler for diagnotstics, LED indication or supply monitoring.