ADM1491EBRZ
Interface ICs
Technical Specifications
| Type | Description |
|---|---|
| Data Rate | 16 Mbps |
| Quiescent Current | 1.2 mA |
| Nodes | 32 |
| ESD Protect | ±8kV |
| Communication Mode | Full-Duplex |
| Number of Drivers | 1 |
| Type | Description |
|---|---|
| Number of Receivers | 1 |
| Supply Voltage | 4.75V~5.25V |
| Type | Transceiver |
| Operating Temperature | -40°C~+85°C |
| Features | Enable shutdown;Overcurrent Protection;Thermal shutdown protection |
| Package / Case | SOIC-14 |
Product Introduction
The ADM1490E/ADM1491E are RS-485/RS-422 transceivers with ±8 kV ESD protection and are suitable for high speed, full-duplex communication on multipoint transmission lines. In particular, the ADM1490E/ADM1491E are designed for use in motor control applications requiring communications at data rates up to 16 Mbps.
The ADM1490E/ADM1491E are designed for balanced transmission lines and comply with TIA/EIA-485-A-98. The devices each have a 12 kΩ receiver input impedance for unit load RS-485 operation, allowing up to 32 nodes on the bus.
The differential transmitter outputs and receiver inputs feature electrostatic discharge circuitry that provides protection to ±8 kV using the human body model (HBM).
The ADM1490E/ADM1491E operate from a single 5 V power supply. Excessive power dissipation caused by bus contention or output shorting is prevented by short-circuit protection and thermal circuitry. Short-circuit protection circuits limit the maximum output current to ±250 mA during fault conditions. A thermal shutdown circuit senses if the die temperature rises above 150°C and forces the driver outputs into a high impedance state under this condition.
The receiver of the ADM1490E/ADM1491E contains a fail-safe feature that results in a logic high output state if the inputs are unconnected (floating).
The ADM1490E/ADM1491E feature extremely fast and closely matched switching times. Minimal driver propagation delays permit transmission at data rates up to 16 Mbps, and low skew minimizes EMI interference.
The ADM1490E/ADM1491E are fully specified over the commercial and industrial temperature ranges. The ADM1490E is available in two packages: a narrow body, 8-lead SOIC and an 8-lead MSOP. The ADM1491E is also available in two packages: a narrow body, 14-lead SOIC and a 10-lead MSOP.
Features
- RS-485/RS-422 full-duplex transceiver for high speed motor control applications
- 16 Mbps data rate
- ±8 kV ESD protection on RS-485 input/output pins
- Complies with ANSI/TIA/EIA-485-A-1998
- Open circuit fail-safe
- Suitable for 5 V power supply applications
- 32 nodes on the bus (1 unit load)
- Thermal shutdown protection
- Operating temperature range: -40°C to +85°C
Applications
- RS-485/RS-422 interfaces
- Industrial field networks
- High data rate motor control
- Multipoint data transmission systems
- Single-ended-to-differential signal conversion
Datasheet
Alternative Parts
Common ADM1491EBRZ alternatives overseas buyers search for:
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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