Overview
The ADM3488ARZ-REEL7 is a full-duplex RS-485/RS-422 transceiver produced by Analog Devices Inc. This integrated circuit is designed for bidirectional data communication on multipoint bus transmission lines. It operates with a single 3.3 V power supply, making it suitable for power-sensitive applications. The transceiver features slew rate limited drivers to minimize Electromagnetic Interference (EMI) and reduce reflections caused by improperly terminated cables, ensuring error-free data transmission.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Data Rate | Up to 250 kbps | kbps |
| Supply Voltage | 3.3 V | V |
| Receiver Input Impedance | 12 kΩ | kΩ |
| Driver Output Protection | Current limit and thermal shutdown | - |
| Propagation Delay Skew | Under 20 ns | ns |
| Package Type | 8-lead SOIC (0.154", 3.90mm Width) | - |
| Temperature Range | Commercial and Industrial | - |
Key Features
- Slew Rate Limited Drivers: Minimize EMI and reduce reflections caused by improperly terminated cables.
- Full-Duplex Operation: Allows simultaneous transmission and reception of data.
- Low Power Consumption: Operates with a single 3.3 V power supply and includes a shutdown mode for power-sensitive applications.
- Driver Output Protection: Features current limit and thermal shutdown to prevent excessive output current and power dissipation.
- Fail-Safe Receiver: Ensures a logic high output state if the inputs are unconnected (floating).
- High Impedance State: Driver outputs enter a high impedance state during thermal shutdown or when disabled.
Applications
- Multipoint Bus Transmission Lines: Ideal for half-duplex and full-duplex bidirectional data communications.
- Daisy-Chain Network Topology: Suitable for use in daisy-chain networks or point-to-point applications.
- Line Repeaters: Can be used as line repeaters to extend the length of the communication line.
- Industrial and Commercial Environments: Fully specified over commercial and industrial temperature ranges.
Q & A
- What is the maximum data rate of the ADM3488ARZ-REEL7?
The ADM3488ARZ-REEL7 can transmit and receive data at rates up to 250 kbps.
- What is the supply voltage for the ADM3488ARZ-REEL7?
The transceiver operates with a single 3.3 V power supply.
- What type of protection does the ADM3488ARZ-REEL7 have for its driver outputs?
The transceiver features current limit protection and thermal shutdown to prevent excessive output current and power dissipation.
- How does the slew rate limited driver benefit the operation of the ADM3488ARZ-REEL7?
The slew rate limited driver minimizes EMI and reduces reflections caused by improperly terminated cables, ensuring error-free data transmission.
- What is the receiver input impedance of the ADM3488ARZ-REEL7?
The receiver input impedance is 12 kΩ, allowing up to 32 transceivers to be connected on the bus.
- What happens to the driver outputs during thermal shutdown?
The driver outputs enter a high impedance state during thermal shutdown.
- Can the ADM3488ARZ-REEL7 be used in daisy-chain network topology?
Yes, the ADM3488ARZ-REEL7 is suitable for use in daisy-chain networks or point-to-point applications.
- What is the package type of the ADM3488ARZ-REEL7?
The transceiver is packaged in an 8-lead SOIC (0.154", 3.90mm Width).
- What temperature ranges is the ADM3488ARZ-REEL7 specified for?
The transceiver is fully specified over commercial and industrial temperature ranges.
- What happens if the inputs of the receiver are unconnected (floating)?
If the inputs are unconnected (floating), the receiver will result in a logic high output state.
