Overview
The ADM3483ARZ is a low-power, slew rate limited, half-duplex RS-485/RS-422 transceiver produced by Analog Devices Inc. This component is designed for bidirectional data communication on multipoint bus transmission lines. It operates within a temperature range of -40°C to +85°C and is available in an 8-lead Narrow Body Small Outline (SOIC_N) package. The transceiver features advanced protection mechanisms, including current limit protection and thermal shutdown, to prevent excessive power dissipation and ensure reliable operation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Data Rate | Up to 250 kbps | kbps |
| Temperature Range | -40°C to +85°C | °C |
| Package Type | 8-Lead Narrow Body Small Outline (SOIC_N) | - |
| Receiver Input Impedance | 12 kΩ | kΩ |
| Driver Enable (DE) and Receiver Enable (RE) | Available | - |
| Propagation Delay Skew | Typically under 10 ns (receiver), 8 ns (driver) | ns |
| Protection Features | Current limit protection, thermal shutdown | - |
Key Features
- Slew Rate Limited Drivers: Minimize EMI and reduce reflections caused by improperly terminated cables, ensuring error-free data transmission.
- High Impedance Outputs: When disabled, the driver and receiver outputs are in a high impedance state.
- Fail-Safe Feature: If inputs are unconnected (floating), the receiver outputs a logic high state.
- Thermal Shutdown: Prevents excessive power dissipation by forcing the driver outputs into a high impedance state during fault conditions.
- Current Limit Protection: Protects against short circuits over the whole common-mode voltage range.
- Low Power Consumption: Designed for low power operation, making it suitable for a variety of applications.
Applications
- Multipoint Bus Transmission Lines: Ideal for half-duplex bidirectional data communications.
- Daisy-Chain Network Topology: Suitable for full-duplex transceivers like the ADM3488 and ADM3490.
- Point-to-Point Applications: Can be used in point-to-point communication scenarios.
- Line Repeaters: The ADM3491 can be used as a line repeater to extend the transmission distance.
Q & A
- What is the maximum data rate of the ADM3483ARZ?
The ADM3483ARZ can transmit and receive data at rates up to 250 kbps.
- What is the operating temperature range of the ADM3483ARZ?
The operating temperature range is -40°C to +85°C.
- What type of package does the ADM3483ARZ come in?
The ADM3483ARZ is available in an 8-lead Narrow Body Small Outline (SOIC_N) package.
- Does the ADM3483ARZ have driver and receiver enable pins?
Yes, the ADM3483ARZ includes driver enable (DE) and receiver enable (RE) pins.
- What protection mechanisms does the ADM3483ARZ have?
The ADM3483ARZ features current limit protection and thermal shutdown to prevent excessive power dissipation.
- How does the fail-safe feature work in the ADM3483ARZ?
If the inputs are unconnected (floating), the receiver outputs a logic high state.
- What is the receiver input impedance of the ADM3483ARZ?
The receiver input impedance is 12 kΩ.
- Can the ADM3483ARZ be used in full-duplex applications?
No, the ADM3483ARZ is a half-duplex transceiver. For full-duplex applications, consider the ADM3488 or ADM3490.
- How does the slew rate limited driver help in data transmission?
The slew rate limited driver minimizes EMI and reduces reflections caused by improperly terminated cables, ensuring error-free data transmission.
- What is the maximum number of transceivers that can be connected on the bus?
Up to 32 transceivers can be connected on the bus due to the 12 kΩ receiver input impedance.
