Overview
The SN75HVD12DG4 from Texas Instruments is a flexible half-duplex RS-485 transceiver designed for industrial applications. This device operates with a single 3.3-V power supply and is part of the SNx5HVD1x family of 3.3-V RS-485 transceivers. It combines a 3-state differential line driver and a differential input line receiver, making it suitable for balanced transmission lines and meeting or exceeding the requirements of ANSI standard TIA/EIA-485-A and ISO 8482:1993.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | 3.6 | 3.6 | V |
| Junction Temperature (TJ) | -40 | - | 145 | °C |
| Storage Temperature (Tstg) | -55 | - | 145 | °C |
| Signaling Rate | - | 1 Mbps | - | bps |
| Unit Load | - | 1/8 | - | - |
| Bus-Pin ESD Protection | - | ±16 kV | - | V (HBM) |
| Standby Current | - | 1 µA | - | A |
| Differential Output Voltage (|VOD|) | 1.5 | - | - | V |
| Propagation Delay Time | 30 | - | 70 | ns |
Key Features
- Operates with a 3.3-V supply.
- Bus-pin ESD protection exceeds 16-kV HBM.
- Optional driver output transition times for signaling rates of 1 Mbps, 10 Mbps, and 32 Mbps.
- Meets or exceeds the requirements of ANSI TIA/EIA-485-A and ISO 8482:1993.
- Bus-pin short-circuit protection from –7 V to 12 V.
- Low-current standby mode: 1 µA, typical.
- Open-circuit, idle-bus, and shorted-bus failsafe receiver.
- Thermal shutdown protection.
- Glitch-free power-up and power-down protection for hot-plugging applications.
Applications
- Digital motor control.
- Utility meters.
- Chassis-to-chassis interconnects.
- Electronic security stations.
- Industrial process control.
- Building automation.
- Point-of-Sale (POS) terminals and networks.
Q & A
- What is the operating voltage of the SN75HVD12DG4?
The SN75HVD12DG4 operates with a single 3.3-V power supply.
- What is the signaling rate of the SN75HVD12DG4?
The signaling rate of the SN75HVD12DG4 is up to 1 Mbps.
- What is the unit load of the SN75HVD12DG4?
The unit load of the SN75HVD12DG4 is 1/8.
- Does the SN75HVD12DG4 have ESD protection?
- What are the thermal shutdown and standby current characteristics of the SN75HVD12DG4?
The SN75HVD12DG4 has thermal shutdown protection and a low-current standby mode of 1 µA, typical.
- Is the SN75HVD12DG4 suitable for hot-plugging applications?
- What are some common applications of the SN75HVD12DG4?
- Does the SN75HVD12DG4 meet industry standards for RS-485 communication?
- What is the propagation delay time of the SN75HVD12DG4?
- How does the SN75HVD12DG4 handle bus short-circuits?
