SN65HVD77DR

SN65HVD77DR is Texas Instruments’ RS-485/RS-422 differential transceiver in an 8-pin device. It combines a driver and a receiver for multi-point differential buses, with DI/RO data paths and DE/RE enables. It can operate on a single supply (commonly 3.0–5.5 V) and features a fail-safe receiver that outputs a defined level when the bus is idle or open, plus 3‑state outputs for bus arbitration. The DR suffix indicates Tape‑&‑Reel packaging. Typical applications include industrial automation, PLCs, building automation, motor control networks, and instrumentation. For exact electrical specs (voltage range, data rate, propagation delay, common-mode range), consult the TI datasheet. Quick hookup: A/B to the RS-485 pair, DI to MCU TX, RO to MCU RX, DE to a GPIO (enable driver), RE to ground or a control signal.

Direct drop-in equivalents (high‑speed CAN transceivers with 5V supply) include:
- Microchip MCP2551 and MCP2561
- NXP TJA1050 and TJA1051
- NXP PCA82C250
Note: pinouts, slew-rate, standby/enable, and TXD/RXD polarity vary. Check datasheets for package (DR) and electrical compatibility before substituting.

Here are key features of the SN65HVD77DR:
- High-speed CAN transceiver for CAN 2.0A/B applications
- Data rate up to 1 Mbps
- Standby/Sleep mode for low power consumption
- Single-supply operation (about 4.5 V to 5.5 V)
- Automotive protections: short-to-ground/short-to-Vcc, current limiting, thermal shutdown
- Bus fault protection and wide common-mode range on CANH/CANL
- ESD protection on CAN pins
- Recessive and dominant bus states with failsafe behavior
- -40°C to 125°C industrial temperature range
- 8-pin SOIC (D package), RoHS-compliant
Note: These features summarize typical capabilities of the SN65HVD77DR; consult the TI datasheet for exact electrical specs.

Pin count: 8 pins (SOIC-8 / D package).
Function: High-speed CAN transceiver that interfaces a CAN controller to the CAN bus. It provides TXD input, RXD output, CANH and CANL bus pins, plus VCC, GND, and an enable/standby control.

- Manufacturer: Texas Instruments (TI).
- Company type: American multinational semiconductor company that designs and manufactures analog, mixed-signal, and embedded processing integrated circuits; one of the world’s largest semiconductor makers.

SN65HVD77DR is a high‑speed CAN transceiver. Key application areas include:
- Automotive in‑vehicle networks (ECUs for engine, body, chassis, powertrain)
- Industrial CAN networks (CANopen, SAE J1939, DeviceNet compatibility)
- Factory automation and robotics requiring CAN interfaces
- Telematics, instrumentation, and data-acquisition systems
- Power-management and building automation platforms using CAN bus
These use cases leverage its CAN physical-layer interface between a microcontroller’s CAN controller and the CAN bus.

SN65HVD77DR uses an 8‑pin SOIC (D‑package) package, RoHS compliant; typically shipped in Tape & Reel.