Datasheet for ADM2481:
- Manufacturer Part Number : ADM2481
- Manufacturer : AD
- Description : 2.5 kV Signal Isolated, 500 kbps, Half Duplex RS-485 Transceiver
- Series : ADM2481
- Reference Price : USD 2.312
- Our Price : We have a better price, contact us by email
- Product Type : Digital Isolation Technology
- Function : Isolated RS-485
- Current Suggest : Production
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : ADM2481
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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- RS-485 transceiver with electrical data isolation
- Complies with ANSI TIA/EIA-485-A and ISO 8482: 1987(E)
- 500 kbps data rate
- Slew rate-limited driver outputs
- Low power operation: 2.5 mA maximum
- Suitable for 5 V or 3.3 V operations (VDD1)
- High common-mode transient immunity: >25 kV/μs
- See data sheet for additional features
The ADM2481 is slew-limited to reduce reflections with improperly terminated transmission lines. The controlled slew rate limits the data rate to 500 kbps. The input impedance of the device is 96 kΩ, allowing up to 256 transceivers on the bus. Its driver has an active-high enable feature. The driver differential outputs and receiver differential inputs are connected internally to form a differential I/O port. When the driver is disabled or when VDD1 or VDD2 = 0 V, this imposes minimal loading on the bus. An active-high receiver disable feature, which causes the receiver output to enter a high impedance state, is provided as well.
The receiver inputs have a true fail-safe feature that ensures a logic-high receiver output level when the inputs are open or shorted. This guarantees that the receiver outputs are in a known state before communication begins and at the point when communication ends.
Current limiting and thermal shutdown features protect against output short circuits and bus contention situations that might cause excessive power dissipation. The part is fully specified over the industrial temperature range of −40°C to +85°C and is available in a 16-lead, wide body SOIC package.
ApplicationsAt least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
