ChongMing Group (HK) Int'l Co., Ltd
CHONGMING GROUP (HK) INT'L CO., LTD.
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SN65HVD1780DR UART Interface IC RS-485 Interface IC 70V Fault-Prot RS485 Xcvr
1 Features
• Bus-Pin Fault Protection to:
– > ±70 V (SN65HVD1780, SN65HVD1781)
– > ±30 V (SN65HVD1782)
Operation With 3.3-V to 5-V Supply Range
±16-kV 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
– Low Standby Supply Current, 1 μA Maximum
– ICC 4-mA Quiescent Current During Operation
Pin-Compatible With Industry-Standard SN75176
Signaling Rates of 115 kbps, 1 Mbps, and up to 10 Mbps
Create a Custom Design using the SN65HVD178x with the WEBENCH® Power Designer
2 Applications
HVAC Networks
Security Electronics
Building Automation
Telecommunication Equipment
Motion Control
Industrial Networks
3 Description
The SN65HVD178x 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. The devices are also robust to ESD events with high levels of protection to the human-body-model specification.
The SN65HVD178x devices combine a differential driver and a differential receiver, which operate from a single power supply. In the SN65HVD1782, 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. This port features 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 125°C. These devices are pin-compatible with the industry- standard SN75176 transceiver, making them drop-in upgrades in most systems.
These devices are fully compliant with ANSI TIA/EIA 485-A with a 5-V supply and can operate with a 3.3-V supply with reduced driver output voltage for low- power applications. For applications where operation is required over an extended common-mode voltage range, see the SN65HVD1785 (SLLS872) data sheet.
Device Information
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
| SN65HVD178x | SOIC (8) | 4.90 mm × 3.91 mm |
| PDIP (8) |
9.81 mm × 6.35 mm
|