THVD1439 Series

3.3-V to 5-V, 250-Kbps, RS-485 transceiver with integrated 4-kV IEC surge and IEC ESD/EFT protection

Catalog

3.3-V to 5-V, 250-Kbps, RS-485 transceiver with integrated 4-kV IEC surge and IEC ESD/EFT protection

Part	Type	Duplex	Supplier Device Package	Protocol	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Data Rate	Receiver Hysteresis	Package / Case	Package / Case [y]	Package / Case [x]
Texas Instruments THVD1439DR	Transceiver	Half	8-SOIC	RS485	-40 °C	125 °C	Surface Mount	5.5 V	3 V	250 KBd	250 mV	8-SOIC	3.9 mm	0.154 in

Catalog

3.3-V to 5-V, 250-Kbps, RS-485 transceiver with integrated 4-kV IEC surge and IEC ESD/EFT protection

Key Features

• Meets or exceeds the requirements of the TIA/EIA-485A standard3-V to 5.5-V Supply VoltageVIOSupport from 1.65-V to VCCsupply level (THVD1439V, THVD1449V)Bus I/O protection± 4-kV IEC 61000-4-5 1.2/50-µs surge± 15-kV IEC 61000-4-2 Contact discharge± 15-kV IEC 61000-4-2 Air-gap discharge± 4-kV IEC 61000-4-4 Electrical fast transient± 15-kV HBM ESD± 15-V DC bus faultAvailable in two speed gradesTHVD1439, THVD1439V: 250 kbpsTHVD1449, THVD1449V: 12 MbpsExtended ambient temperature range: -40°C to 125°CExtended operational common-mode range: ± 12 VLarge receiver hysteresis for noise rejectionLow Power ConsumptionStandby supply current: < 3 µACurrent during operation: < 5 mAGlitch-free power-up/down for hot plug-in capabilityOpen, short, and idle bus failsafe1/8 Unit load (up to 256 bus nodes)Industry standard 8-pin SOIC for drop-in compatibilityMeets or exceeds the requirements of the TIA/EIA-485A standard3-V to 5.5-V Supply VoltageVIOSupport from 1.65-V to VCCsupply level (THVD1439V, THVD1449V)Bus I/O protection± 4-kV IEC 61000-4-5 1.2/50-µs surge± 15-kV IEC 61000-4-2 Contact discharge± 15-kV IEC 61000-4-2 Air-gap discharge± 4-kV IEC 61000-4-4 Electrical fast transient± 15-kV HBM ESD± 15-V DC bus faultAvailable in two speed gradesTHVD1439, THVD1439V: 250 kbpsTHVD1449, THVD1449V: 12 MbpsExtended ambient temperature range: -40°C to 125°CExtended operational common-mode range: ± 12 VLarge receiver hysteresis for noise rejectionLow Power ConsumptionStandby supply current: < 3 µACurrent during operation: < 5 mAGlitch-free power-up/down for hot plug-in capabilityOpen, short, and idle bus failsafe1/8 Unit load (up to 256 bus nodes)Industry standard 8-pin SOIC for drop-in compatibility

Description

THVD14x9(V) devices are half-duplex RS-485 transceivers with integrated surge protection. Surge protection is achieved by integrating transient voltage suppressor (TVS) diodes in the standard 8-pin SOIC (D) package. This feature increases the reliability by providing better immunity to noise transients coupled to the data cable which eliminates the need for external protection components. THVD1439 and THVD1449 operate from a single 3.3-V or 5-V supply. The THVD1439V and THVD1449V devices support an additional VIOsupply to operate the IOs from as low as 1.65 V supply level. The devices in this family feature a wide common-mode voltage range making them suitable for multi-point applications over long cable runs. THVD14x9(V) devices are half-duplex RS-485 transceivers with integrated surge protection. Surge protection is achieved by integrating transient voltage suppressor (TVS) diodes in the standard 8-pin SOIC (D) package. This feature increases the reliability by providing better immunity to noise transients coupled to the data cable which eliminates the need for external protection components. THVD1439 and THVD1449 operate from a single 3.3-V or 5-V supply. The THVD1439V and THVD1449V devices support an additional VIOsupply to operate the IOs from as low as 1.65 V supply level. The devices in this family feature a wide common-mode voltage range making them suitable for multi-point applications over long cable runs.