ADM3485EARZ-REEL
Drivers, Receivers, Transceivers
Technical Specifications
| Type | Description |
|---|---|
| Working Voltage V | 3.3 V |
| Data Rate | 12000000 |
| Iq A | 0.002 A |
| Nodes | 32 |
| ESD Protect | +/-15kV |
| Communication Mode | Half-Duplex |
| Type | Description |
|---|---|
| Number of Drivers | 1 |
| Number of Receivers | 1 |
| Type | Transceiver |
| Operating Temp | -40°C ~ +85°C |
| Features | Tx/Rx enable;Enable shutdown;Thermal shutdown protection;Low-power mode |
| Package / Case | SOIC-8 |
Product Introduction
The ADM3485E is a 3.3 V, low power data transceiver with ±15 kV ESD protection, suitable for half-duplex communication on multipoint bus transmission lines. The ADM3485E is designed for balanced data transmission and complies with TIA/EIA standards RS485 and RS-422. The ADM3485E is a half-duplex transceiver that shares differential lines and has separate enable inputs for the driver and the receiver.
The devices have a 12 kΩ receiver input impedance, which allows up to 32 transceivers on a bus. Because only one driver should be enabled at any time, the output of a disabled or powered-down driver is tristated to avoid overloading the bus.
The receiver has a fail-safe feature that ensures a logic high output when the inputs are floating. Excessive power dissipation caused by bus contention or by output shorting is prevented with a thermal shutdown circuit.
The part is fully specified over the industrial temperature range and is available in an 8-lead narrow SOIC package.
Features
- TIA/EIA RS-485/RS-422 compliant
- ±15 kV ESD protection on RS-485 input/output pins
- 12 Mbps data rate
- Half-duplex transceiver
- Up to 32 nodes on the bus
- Receiver open-circuit, fail-safe design
- Low power shutdown current
- Outputs high-Z when disabled or powered off
- Common-mode input range: −7 V to +12 V
- Thermal shutdown and short-circuit protection
- Industry-standard 75176 pinout
- 8-lead narrow SOIC package
Applications
- - Power/energy metering - Telecommunications - EMI-sensitive systems - Industrial control - Local area networks
Datasheet
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Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
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