Overview
The SN65HVD1786DRG4 is a member of the SN65HVD17xx family of RS-485 transceivers produced by Texas Instruments. These devices are designed to operate in harsh environments and provide robust protection against various types of faults. They are suitable for applications requiring reliable communication over long cable runs and in multipoint networks. The SN65HVD1786DRG4 specifically operates at a data rate of up to 1 Mbps, making it versatile for a range of industrial and commercial communication systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Signaling Rate | 1 Mbps | |
| Number of Nodes | Up to 256 | |
| Cable Length | Up to 150 m | |
| Supply Voltage | 4.5 to 5.5 V | V |
| Junction Temperature | –40 to 150 °C | °C |
| Common-Mode Voltage Range | –20 to 25 V | V |
| Bus-Pin Fault Protection | ±70 V | V |
| ESD Protection | ±16 kV JEDEC HBM | |
| Quiescent Supply Current | 4 to 6 mA | mA |
| Driver Differential Output Rise/Fall Time | 0.4 to 2.6 μs | μs |
Key Features
- Bus-pin fault protection up to ±70 V to protect against direct shorts to power supplies, mis-wiring faults, and other common faults.
- Wide common-mode voltage range (–20 V to 25 V) for robust operation in multipoint applications.
- High ESD protection (±16 kV JEDEC HBM) to safeguard against electrostatic discharge events.
- Low power consumption with a quiescent supply current of 4 to 6 mA and a standby supply current of 1 μA typical.
- Failsafe receiver for open-circuit, short-circuit, and idle-bus conditions.
- Glitch-free operation during power-up and power-down.
- Half-duplex operation with internally connected driver and receiver bus interfaces.
Applications
The SN65HVD1786DRG4 is designed for use in RS-485 and RS-422 networks, making it suitable for a variety of applications including industrial automation, building automation, medical devices, and any system requiring reliable serial communication over long distances. It is particularly useful in environments where the communication lines are exposed to high levels of noise or potential faults.
Q & A
- What is the signaling rate of the SN65HVD1786DRG4?
The signaling rate of the SN65HVD1786DRG4 is up to 1 Mbps. - How many nodes can be supported by the SN65HVD1786DRG4?
The SN65HVD1786DRG4 can support up to 256 nodes. - What is the maximum cable length for the SN65HVD1786DRG4?
The maximum cable length for the SN65HVD1786DRG4 is up to 150 meters. - What is the supply voltage range for the SN65HVD1786DRG4?
The supply voltage range for the SN65HVD1786DRG4 is 4.5 to 5.5 V. - What level of ESD protection does the SN65HVD1786DRG4 offer?
The SN65HVD1786DRG4 offers ±16 kV JEDEC HBM ESD protection. - What is the common-mode voltage range of the SN65HVD1786DRG4?
The common-mode voltage range of the SN65HVD1786DRG4 is –20 to 25 V. - Is the SN65HVD1786DRG4 suitable for half-duplex or full-duplex operation?
The SN65HVD1786DRG4 is suitable for half-duplex operation. - What is the quiescent supply current of the SN65HVD1786DRG4?
The quiescent supply current of the SN65HVD1786DRG4 is 4 to 6 mA. - Does the SN65HVD1786DRG4 have failsafe receiver functionality?
Yes, the SN65HVD1786DRG4 has failsafe receiver functionality for open-circuit, short-circuit, and idle-bus conditions. - Is the SN65HVD1786DRG4 protected against bus-pin faults?
Yes, the SN65HVD1786DRG4 is protected against bus-pin faults up to ±70 V.
