Overview
The SN65HVD34DRG4 is a 3.3-V full-duplex RS-485 driver and receiver from Texas Instruments. This device is part of the SN65HVD3x family, designed for robust and reliable data transmission in various industrial and commercial applications. It operates with a 3.3-V power supply and supports full-duplex bus communication, making it suitable for systems requiring simultaneous data transmission and reception.
The SN65HVD34DRG4 is characterized by its high signaling rates, low power consumption, and enhanced protection features such as bus-pin ESD protection exceeding 15 kV HBM and glitch-free power-up and power-down protection. This device is available in a 14-pin SOIC package and is fully enabled with active-high driver enables and active-low receiver enables.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | 3.3 | 3.6 | V |
| Signaling Rate | - | - | 5 Mbps | Mbps |
| Differential Load Resistance (RL) | 54 | 60 | - | Ω |
| High-Level Input Voltage (VIH) | - | - | 2 VCC | V |
| Low-Level Input Voltage (VIL) | - | - | 0.8 VCC | V |
| Differential Input Voltage (VID) | -12 | - | 12 | V |
| High-Level Output Current (IOH) | -60 | - | - | mA |
| Low-Level Output Current (IOL) | 60 | - | - | mA |
| Junction Temperature (TJ) | -40 | - | 150 | °C |
| Standby Current (ICC) | - | - | 1 μA | μA |
Key Features
- 1/8 Unit-load option available, supporting up to 256 nodes on the bus.
- Bus-pin ESD protection exceeds 15 kV HBM.
- Optional driver output transition times for signaling rates of 1 Mbps, 5 Mbps, and 26 Mbps.
- Low-current standby mode: less than 1 μA.
- Glitch-free power-up and power-down protection for hot-plugging applications.
- 5-V tolerant inputs.
- Bus idle, open, and short-circuit failsafe.
- Driver current limiting and thermal shutdown.
- Designed for RS-422 and RS-485 networks.
- Active-high driver enables and active-low receiver enables.
Applications
- Utility meters.
- DTE and DCE interfaces.
- Industrial, process, and building automation.
- Point-of-sale (POS) pins and networks.
Q & A
- What is the primary function of the SN65HVD34DRG4?
The SN65HVD34DRG4 is a 3.3-V full-duplex RS-485 driver and receiver designed for data transmission in industrial and commercial applications.
- What are the signaling rates supported by the SN65HVD34DRG4?
The SN65HVD34DRG4 supports a signaling rate of up to 5 Mbps.
- What is the maximum number of nodes supported on the bus?
The device supports up to 256 nodes on the bus due to its 1/8 unit-load option.
- What level of ESD protection does the SN65HVD34DRG4 offer?
The device offers bus-pin ESD protection exceeding 15 kV HBM.
- What is the standby current of the SN65HVD34DRG4?
The standby current is less than 1 μA when both the driver and receiver are disabled.
- Is the SN65HVD34DRG4 suitable for hot-plugging applications?
Yes, it features glitch-free power-up and power-down protection, making it suitable for hot-plugging applications.
- What are the typical operating temperatures for the SN65HVD34DRG4?
The device is characterized for ambient temperatures from –40°C to 85°C.
- What types of networks is the SN65HVD34DRG4 designed for?
The device is designed for RS-422 and RS-485 networks.
- Does the SN65HVD34DRG4 have active enables for the driver and receiver?
Yes, it has active-high driver enables and active-low receiver enables.
- What is the package type for the SN65HVD34DRG4?
The device is available in a 14-pin SOIC package.
