The THVD1426DR from Texas Instruments is a robust half-duplex RS-485/RS-422 transceiver supporting signaling rates of up to 12Mbps. It integrates one driver and one receiver and features automatic direction control using the data input pin, reducing the need for separate driver-enable and receiver-enable control signals.
The device operates from a 3V to 5.5V single supply and supports a -7V to +12V common-mode range. Its 1/8-unit-load receiver allows up to 256 nodes on the bus. Open, short and idle-bus fail-safe functionality, combined with large receiver hysteresis, helps improve communication reliability in noisy industrial environments.
The THVD1426 provides robust bus protection including ±16kV HBM ESD, ±12kV IEC 61000-4-2 contact discharge, ±15kV IEC air-gap discharge and ±4kV IEC 61000-4-4 EFT protection. It also provides ±16V bus fault protection. Typical standby supply current is only 3μA, while typical operating quiescent current is approximately 1.7mA.
The THVD1426DR is supplied in an industry-standard 8-pin SOIC (D) package and is specified for an operating temperature range of -40°C to +125°C. The DR ordering option is supplied in 3000-piece large tape-and-reel packaging. Typical applications include industrial automation, building control, motor drives, instrumentation and multipoint RS-485 communication networks.
Key Specifications:
- Brand: Texas Instruments / TI
- Part Number: THVD1426DR
- Product Type: RS-485 / RS-422 Transceiver
- Duplex: Half Duplex
- Number of Drivers: 1
- Number of Receivers: 1
- Maximum Data Rate: 12Mbps
- Supply Voltage: 3V to 5.5V
- Direction Control: Automatic
- Common-Mode Range: -7V to +12V
- Unit Load: 1/8 UL
- Maximum Bus Nodes: 256
- Bus Fault Protection: ±16V
- HBM ESD Protection: ±16kV
- IEC Contact ESD: ±12kV
- IEC Air-Gap ESD: ±15kV
- IEC EFT Protection: ±4kV
- Fail-Safe: Open, Short and Idle Bus
- Typical Standby Current: 3μA
- Typical Operating Quiescent Current: 1.7mA
- Package: SOIC-8 / D
- Pin Count: 8
- Operating Temperature: -40°C to +125°C
- RoHS: Compliant
- Packaging: Tape & Reel
- Standard Pack Quantity: 3000 pcs
- Product Status: ACTIVE
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