SN65HVD1785DR 70 V Fault Protected Bluetooth Uart IC , USB Driver IC RS 422 RS 485 Transceive
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,uart level shifter ic
SN65HVD1785DR UART Interface IC RS-422/RS-485 Interface IC 70-V Fault-Protected RS-485 Transceivers
1 Features
• Bus-Pin Fault Protection to:
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– > ±70 V ('HVD1785, 86, 91, 92)
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– > ±30 V ('HVD1787, 93)
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Common-Mode Voltage Range (–20 V to 25 V) More Than Doubles TIA/EIA 485 Requirement
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Bus I/O Protection
– ±16 kV JEDEC HBM Protection
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Reduced Unit Load for Up to 256 Nodes
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Failsafe Receiver for Open-Circuit, Short-Circuit and Idle-Bus Conditions
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Low Power Consumption
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– Low Standby Supply Current, 1 μA Typical
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– ICC 5 mA Quiescent During Operation
-
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Power-Up, Power-Down Glitch-Free Operation
2 Applications
• Designed for RS-485 and RS-422 Networks
3 Description
These devices are designed to survive overvoltage faults such as direct shorts to power supplies, mis- wiring faults, connector failures, cable crushes, and tool mis-applications. They are also robust to ESD events, with high levels of protection to human-body model specifications.
These devices combine a differential driver and a differential receiver, which operate from a single power supply. In the 'HVD1785, 'HVD1786, and 'HVD1787, the driver differential outputs and the receiver differential inputs are connected internally to form a bus port suitable for half-duplex (two-wire bus) communication. In the 'HVD1793, the driver differential outputs and the receiver differential inputs are separate pins, to form a bus port suitable for full- duplex (four-wire bus) communication. These ports feature a wide common-mode voltage range, making the devices suitable for multipoint applications over long cable runs. These devices are characterized from –40°C to 105°C.
For similar features with 3.3-V supply operation, see the SN65HVD1781 (SLLS877).
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
SN65HVD1785, SN65HVD1786, SN65HVD1787 |
SOIC (8) |
4.90 mm × 3.91 mm |
|
PDIP (8) |
9.81 mm × 6.35 mm |
|
|
SN65HVD1791, SN65HVD1792, SN65HVD1793 |
SOIC (14) |
8.65 mm × 3.91 mm |
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