Overview
The SN65HVD1782-Q1 from Texas Instruments is a half-duplex RS-485 transceiver designed for robust and reliable data transmission in various applications. This device is part of the SN65HVD178x-Q1 family, which includes three speed grades suitable for data transmission rates up to 10 Mbps. It is qualified for automotive applications and meets the AEC-Q100 standards, ensuring high reliability and performance in harsh environments. The transceiver operates from a single power supply and features a wide common-mode voltage range, making it suitable for multipoint applications over long cable runs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Signaling Rate | Up to 10 Mbps | |
| Number of Nodes | Up to 64 | |
| Supply Voltage | 3.15 V to 5.5 V | V |
| Bus Pin Fault Protection | Up to ±70 V (except specific conditions) | V |
| Operating Temperature Range | –40°C to 125°C | °C |
| Junction Temperature | –40°C to 150°C | °C |
| Driver Differential Output Voltage Magnitude | 1.5 V to 2.5 V | V |
| Receiver Differential Input Voltage Threshold Hysteresis | 30 mV to 50 mV | mV |
| ESD Protection | ±16 kV Human Body Model (HBM) | kV |
Key Features
- Half-duplex RS-485 transceiver with signaling rates up to 10 Mbps.
- Wide common-mode operating range and bus-pin fault protection up to ±70 V.
- Internal ESD protection circuits against ±16 kV Human Body Model (HBM) electrostatic discharges.
- Active-high driver enable and active-low receiver enable.
- Low power consumption with a standby current of less than 1 µA when both driver and receiver are disabled.
- Fully compliant with ANSI TIA/EIA 485-A standards.
- Pin-compatible with the industry-standard SN75176 transceiver.
- Reduced unit load for up to 320 nodes in other models of the series.
- Failsafe receiver for open-circuit, short-circuit, and idle-bus conditions.
Applications
The SN65HVD1782-Q1 is suitable for a variety of applications, including:
- Automotive systems: Given its AEC-Q100 qualification, it is ideal for use in automotive environments.
- Industrial automation: Its robustness and reliability make it a good choice for industrial control systems and automation.
- Long-distance data transmission: The device's ability to handle long cable runs and wide common-mode voltage ranges makes it suitable for applications requiring reliable data transmission over extended distances.
- Multipoint networks: It can support up to 64 nodes, making it suitable for multipoint communication systems.
Q & A
- What is the maximum signaling rate of the SN65HVD1782-Q1?
The SN65HVD1782-Q1 supports signaling rates up to 10 Mbps. - How many nodes can the SN65HVD1782-Q1 support?
The SN65HVD1782-Q1 can support up to 64 nodes. - What is the operating temperature range of the SN65HVD1782-Q1?
The device operates from –40°C to 125°C. - What level of ESD protection does the SN65HVD1782-Q1 offer?
The device offers ±16 kV Human Body Model (HBM) ESD protection. - Is the SN65HVD1782-Q1 compliant with any industry standards?
Yes, it is fully compliant with ANSI TIA/EIA 485-A standards. - What is the typical standby current of the SN65HVD1782-Q1?
The standby current is less than 1 µA when both the driver and receiver are disabled. - Can the SN65HVD1782-Q1 survive bus pin faults?
Yes, it can survive bus pin faults up to ±70 V under most conditions, except for specific scenarios where damage may occur. - Is the SN65HVD1782-Q1 pin-compatible with other transceivers?
Yes, it is pin-compatible with the industry-standard SN75176 transceiver. - What are the supply voltage requirements for the SN65HVD1782-Q1?
The device operates with a supply voltage of 3.15 V to 5.5 V. - What kind of receiver failsafe does the SN65HVD1782-Q1 provide?
The device provides failsafe receiver functionality for open-circuit, short-circuit, and idle-bus conditions.
