IC TXRX RS485/RS422 8-DFN
| Part Number | LTC2857HDD-1#PBF |
| Date Code | 2052 |
| Quantity Available | 11572 pcs |
| Manufacturer | Linear Technology/Analog Devices |
| Lead Time | Ship within 24 hours |
| QTY | 1000 |
| Datasheet | LTC2857-1.pdf |
| Minimum Quantity | More than 50pcs |
| Distributor | SingSun |
| RoHS Status | Lead free / RoHS Compliant |
| Ship From | Hong Kong |
| Shipment Way | EMS/SF/DHL/TNT/UPS/FedEx |
| Country of Assembly | MALAYSIA |
| Country of Diffusion | TAIWAN,CHINA |
| Base Product Number | LTC2857-1 |
| Packaging | Tube |
| Lot Number | FE59039.99 |
| MSL | 3 |
| Protocol | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Full |
| Receiver Hysteresis | 25mV |
| Data Rate | 20Mbps |
| Voltage - Supply | 4.5 V ~ 5.5 V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 8-WFDFN Exposed Pad |
| Supplier Device Package | 8-DFN (3x3) |
The LTC2857HDD-1#PBF are low power, RS485/RS422 transceivers operating on 5V supplies at maximum data rates of 20Mbps or 250kbps for low EMI. The receiver has a one-eighth unit load, supporting up to 256 nodes per bus (C, I-Grade), and a fail-safe feature that guarantees a high output state under conditions of floating or shorted inputs.
The driver maintains a high output impedance over the entire common mode range when disabled or when the supply is removed. Excessive power dissipation caused by bus contention or a fault is prevented by current limiting all outputs and by thermal shutdown.
Enhanced ESD protection allows these parts to withstand ±15kV (human body model) on the transceiver interface pins without latch-up or damage.
