Overview
The SN65HVD55DRG4 is a high-output, full-duplex RS-485 driver and receiver integrated circuit produced by Texas Instruments. This device is part of the SN65HVD5x series, designed for balanced transmission lines and compliance 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 characterized for operation from –40°C to 85°C, making it suitable for a wide range of industrial and commercial applications.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.5 | 5.0 | 5.5 | V |
| Signaling Rate | - | - | 1 Mbps | Mbps |
| 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 |
| Standby Current | - | - | < 1 μA | μA |
| Operating Temperature | -40 | - | 85 | °C |
| Package | - | - | 14-SOIC | - |
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.
- Active-high driver enables and active-low receiver enables for SN65HVD53, SN65HVD54, and SN65HVD55 models.
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 operating voltage range of the SN65HVD55DRG4?
The operating voltage range is from 4.5 V to 5.5 V.
- What is the maximum signaling rate supported by the SN65HVD55DRG4?
The maximum signaling rate supported is 1 Mbps for this specific model.
- What is the differential load resistance range for the SN65HVD55DRG4?
The differential load resistance range is from 54 Ω to 60 Ω.
- What is the standby current of the SN65HVD55DRG4?
The standby current is less than 1 μA.
- Does the SN65HVD55DRG4 have ESD protection?
- What are the operating temperature ranges for the SN65HVD55DRG4?
The operating temperature range is from –40°C to 85°C.
- What package type is the SN65HVD55DRG4 available in?
The device is available in a 14-SOIC package.
- Is the SN65HVD55DRG4 compliant with RS-422 and RS-485 standards?
- What are some typical applications of the SN65HVD55DRG4?
Typical applications include utility meters, chassis-to-chassis interconnects, DTE/DCE interfaces, industrial automation, and point-of-sale terminals.
- Does the SN65HVD55DRG4 have active enables for the driver and receiver?
