Overview
The SN65HVD08D, produced by Texas Instruments, is a 3-state differential line driver and differential line receiver designed for balanced data transmission. This RS-485 transceiver is compatible with ANSI TIA/EIA-485-A and ISO-8482E standard-compliant devices. It operates over a wide supply voltage range of 3-V to 5.5-V, making it versatile for various applications. The device is optimized for low power consumption, with a quiescent power of less than 90 mW, and features failsafe protection for open-circuit, short-circuit, and idle-bus conditions. The SN65HVD08D is suitable for high-speed data transmission up to 10 Mbps and supports up to 256 nodes on the bus due to its 1/8 unit-load capability.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range | 3 | 5.5 | V | |
| Quiescent Power | 90 | mW | ||
| Operating Temperature Range | -40 | 85 | °C | |
| Driver Output Voltage Slew Rate | Limited for 10 Mbps | |||
| Bus-pin ESD Protection | 16 kV | HBM | ||
| Driver High-Level Output Current | -60 | 60 | mA | |
| Receiver Low-Level Output Voltage | 0.4 | V @ IOL = 8 mA | ||
| Receiver Propagation Delay Time (Low-to-High) | 70 | ns |
Key Features
- Operates with a 3-V to 5.5-V supply voltage range
- Consumes less than 90-mW quiescent power
- Open-circuit, short-circuit, and idle-bus failsafe receiver
- 1/8 unit-load capability, supporting up to 256 nodes on the bus
- Bus-pin ESD protection exceeds 16-kV HBM
- Driver output voltage slew-rate limited for optimum signal quality at 10 Mbps
- Electrically compatible with ANSI TIA/EIA-485 standard
- Active-high driver enable and active-low receiver enable
- Internal biasing of the receiver input thresholds for failsafe conditions
Applications
- Data transmission with remote stations powered from the host
- Isolated multipoint data buses
- Industrial process control networks
- Point-of-sale networks
- Electric utility metering
Q & A
- What is the supply voltage range of the SN65HVD08D?
The SN65HVD08D operates with a supply voltage range of 3-V to 5.5-V.
- What is the quiescent power consumption of the SN65HVD08D?
The quiescent power consumption is less than 90 mW.
- What kind of failsafe protection does the SN65HVD08D offer?
The device offers open-circuit, short-circuit, and idle-bus failsafe receiver protection.
- How many nodes can the SN65HVD08D support on the bus?
It can support up to 256 nodes due to its 1/8 unit-load capability.
- What is the ESD protection level of the SN65HVD08D?
The bus-pin ESD protection exceeds 16-kV HBM.
- What is the maximum data transmission rate of the SN65HVD08D?
The device supports data transmission up to 10 Mbps.
- Is the SN65HVD08D compatible with ANSI TIA/EIA-485 standard?
Yes, it is electrically compatible with the ANSI TIA/EIA-485 standard.
- What are the enable configurations for the driver and receiver?
The driver has an active-high enable, and the receiver has an active-low enable.
- What is the operating temperature range of the SN65HVD08D?
The operating temperature range is from -40°C to 85°C.
- How can the driver and receiver enables be used together?
The driver and receiver enables can be externally connected together to function as a direction control.
