Overview
The SN65HVD1781-Q1 is a fault-protected RS-485 transceiver designed and manufactured by Texas Instruments. This device is part of the SN65HVD178x-Q1 family, which is specifically tailored for automotive applications and is AEC-Q100 qualified. It operates over a wide temperature range from –40°C to 125°C, making it suitable for harsh environments. The transceiver supports data transmission rates of up to 1 Mbps and features bus-pin fault protection up to ±70V, ensuring robust performance in various conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 8 | - |
| Operating Temperature Range | –40 to 125 | °C |
| Supply Voltage Range | 3.3V to 5.5V | V |
| Bus Pin Fault Protection | ±70V | V |
| Signaling Rate | Up to 1 Mbps | - |
| ESD Protection | ±16kV HBM | - |
| Standby Supply Current | < 1µA | A |
| Quiescent Supply Current | 4mA | A |
| Junction Temperature | –40 to 150 | °C |
Key Features
- Qualified for automotive applications and AEC-Q100 certified.
- Bus-pin fault protection up to ±70V.
- Operation with 3.3V to 5.5V supply range.
- ±16kV HBM protection on bus pins.
- Reduced unit load for up to 320 nodes.
- Failsafe receiver for open-circuit, short-circuit, and idle-bus conditions.
- Low power consumption with low standby supply current (< 1µA) and quiescent supply current (4mA).
- Pin-compatible with industry-standard SN75176.
- Supports signaling rates of up to 1 Mbps.
Applications
The SN65HVD1781-Q1 is primarily used in automotive data links and other applications requiring robust and reliable RS-485 communication. It is suitable for use in harsh environments due to its wide operating temperature range and fault protection features.
Q & A
- What is the operating temperature range of the SN65HVD1781-Q1?
The operating temperature range is from –40°C to 125°C. - What is the maximum bus-pin fault protection voltage for the SN65HVD1781-Q1?
The maximum bus-pin fault protection voltage is ±70V. - What are the supported signaling rates for the SN65HVD1781-Q1?
The device supports signaling rates up to 1 Mbps. - What is the ESD protection level for the SN65HVD1781-Q1?
The device has ±16kV HBM ESD protection on bus pins. - Is the SN65HVD1781-Q1 qualified for automotive applications?
Yes, it is AEC-Q100 qualified and designed for automotive applications. - What is the standby supply current of the SN65HVD1781-Q1?
The standby supply current is less than 1µA. - Is the SN65HVD1781-Q1 pin-compatible with other industry-standard devices?
Yes, it is pin-compatible with the industry-standard SN75176. - What is the maximum number of nodes supported by the SN65HVD1781-Q1?
The device supports up to 320 nodes. - Does the SN65HVD1781-Q1 have failsafe receiver functionality?
Yes, it has failsafe receiver functionality for open-circuit, short-circuit, and idle-bus conditions. - What is the quiescent supply current of the SN65HVD1781-Q1 during operation?
The quiescent supply current is 4mA.
