ADM3491EARZ-REEL7
Drivers, Receivers, Transceivers
Technical Specifications
| Type | Description |
|---|---|
| Working Voltage V | 3.3 V |
| Data Rate | 12000000 |
| Iq A | 0.001 A |
| Nodes | 32 |
| ESD Protect | +/-15kV |
| Communication Mode | Full-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;Low-power mode;Overcurrent Protection;Thermal shutdown protection |
| Package / Case | SOIC-14 |
Product Introduction
The ADM3483E/ADM3486E/ADM3488E/ADM3490E/ ADM3491E are 3.3 V, low power data transceivers with ±15 kV ESD protection suitable for full- and half-duplex communication on multipoint bus transmission lines. They are designed for balanced data transmission, and they comply with TIA/EIA standards RS485 and RS-422. The ADM3483E/ADM3486E are half-duplex transceivers that share differential lines and have separate enable inputs for the driver and receiver. The full-duplex ADM3488E/ ADM3490E/ADM3491E transceivers have dedicated differential line driver outputs and receiver inputs. The ADM3491E also features separate enable inputs for the driver and 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 driver outputs of the ADM3483E/ADM3486E/ ADM3488E are slew rate limited, in order to reduce EMI and data errors caused by reflections from improperly terminated buses. 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 parts are fully specified over the industrial temperature range and are available in 8-lead and 14-lead narrow SOIC packages.
Features
- TIA/EIA RS-485/RS-422 compliant
- ±15 kV ESD protection on RS-485 input/output pins
- Data rates ADM3483E/ADM3488E: 250 kbps ADM3486E: 2.5 Mbps ADM3490E/ADM3491E: 12 Mbps
- Half- and full-duplex options
- Up to 32 nodes on the bus
- Receiver open-circuit, fail-safe design
- Low power shutdown current (ADM3483E/ADM3486E/ADM3491E only)
- 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 and 14-lead narrow SOIC packages
Applications
- - Power/energy metering - Telecommunications - EMI-sensitive systems - Industrial control - Local area networks
Datasheet
Alternative Parts
Common ADM3491EARZ-REEL7 alternatives overseas buyers search for:
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- MAX3491ESD+ (request quote)
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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