SN65HVD50
高输出全双工 RS 485 驱动器和接收器
The SN65HVD5X devices are 3-state differential line drivers and differential-input line receivers that operate with a 5-V power supply. Each driver and receiver has separate input and output pins for full-duplex bus communication designs. They are designed for balanced transmission lines and interoperation with ANSI A/EIA-485A, TIA/EIA-422-B, ITU-T v.11 and ISO 8482:1993 standard-compliant devices.
The , SN65HVD51, and SN65HVD52 are fully enabled with no external enabling pins.
The SN65HVD53, SN65HVD54, and SN65HVD55 have active-high driver enables and active-low receiver enables. A low, less than 1 µA, standby current is achieved by disabling both the driver and receiver.
All devices are characterized for operation from –40°C to 85°C.
The high output feature of the SN65HVD5x provides more noise margin than the typical RS-485 drivers. The extra noise margin makes applications in long cable and harsh noise environments possible.
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- 1/8 Unit-Load Option Available Up to 256 Nodes on the Bus
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- Bus-Pin ESD Protection Exceeds 15 kV HBM
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- Optional Driver Output Transition Times for Signaling Rates1 of 1 Mbps, 5 Mbps and 25 Mbps
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- Low-Current Standby Mode < 1 µA
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- Glitch-Free Power-Up and Power-Down Bus I/Os
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- Bus Idle, Open, and Short Circuit Failsafe
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- Designed for RS-422 and RS485 Networks
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- 3.3-V Devices Available, SN65HVD30-35
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- APPLICATIONS
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- Utility Meters
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- Chassis-to-Chassis Interconnects
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- DTE/DCE Interfaces
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- Industrial, Process, and Building Automation
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- Point-of-Sale POS Terminals and Networks
1The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps bits per second.