Overview
The SN65HVD52DR is a high-output, full-duplex RS-485 driver and receiver produced by Texas Instruments. This component is designed for use in balanced transmission lines and is compliant with ANSI TIA/EIA-485A, TIA/EIA-422-B, ITU-T v.11, and ISO 8482:1993 standards. It operates with a 5-V power supply and is available in an 8-pin SOIC (D) package. The SN65HVD52DR is fully enabled without the need for external enabling pins, making it a convenient choice for various industrial and communication applications.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.5 | 5 | 5.5 | V |
| Signaling Rate | - | - | 1 Mbps | bps |
| Differential Load Resistance (RL) | 54 | - | 60 | Ω |
| High-Level Input Voltage (VIH) | - | - | 2 VCC | V |
| Low-Level Input Voltage (VIL) | 0 | - | 0.8 | 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 |
| Electrostatic Discharge Protection (HBM) | ±16 | - | - | kV |
| Steady-State Differential Output Voltage (|VOD(SS)|) | 1.7 | - | 2.6 | V |
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 25 Mbps.
- Low-current standby mode with current less than 1 μA.
- Glitch-free power-up and power-down bus I/Os.
- Bus idle, open, and short circuit failsafe.
- Designed for RS-422 and RS-485 networks.
- High output feature providing more noise margin than typical RS-485 drivers.
Applications
- Utility meters.
- Chassis-to-chassis interconnects.
- DTE/DCE Interfaces.
- Industrial, process, and building automation.
- Point-of-sale (POS) terminals and networks.
Q & A
- What is the primary function of the SN65HVD52DR?
The SN65HVD52DR is a high-output, full-duplex RS-485 driver and receiver designed for balanced transmission lines.
- What is the operating voltage range of the SN65HVD52DR?
The operating voltage range is from 4.5 V to 5.5 V.
- What is the maximum signaling rate supported by the SN65HVD52DR?
The SN65HVD52DR supports a signaling rate of up to 1 Mbps.
- What kind of ESD protection does the SN65HVD52DR offer?
The SN65HVD52DR offers ESD protection exceeding 15 kV HBM.
- What is the standby current of the SN65HVD52DR?
The standby current is less than 1 μA.
- Is the SN65HVD52DR compatible with RS-422 networks?
Yes, the SN65HVD52DR is designed for both RS-422 and RS-485 networks.
- What is the junction temperature range of the SN65HVD52DR?
The junction temperature range is from -40°C to 150°C.
- What are some common applications of the SN65HVD52DR?
Common applications include utility meters, chassis-to-chassis interconnects, DTE/DCE interfaces, industrial automation, and point-of-sale terminals.
- Does the SN65HVD52DR have any failsafe features?
Yes, it includes bus idle, open, and short circuit failsafe features.
- How many nodes can be supported on the bus with the SN65HVD52DR?
The SN65HVD52DR supports up to 256 nodes on the bus.
