Overview
The ADM3488ARZ from Analog Devices Inc. is a low-power, differential line transceiver designed for RS-485 and RS-422 communications. This device operates on a single 3.3 V power supply and is available in an 8-lead SOIC (Small Outline IC) package. It is suitable for full-duplex data transmission and is characterized by its slew rate limited drivers, which minimize EMI and reduce reflections caused by improperly terminated cables. This makes it ideal for applications requiring reliable and error-free data transmission at data rates up to 250 kbps.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | ADM3488ARZ |
| Package | 8-Lead SOIC (Small Outline IC) |
| Data Rate | Up to 250 kbps |
| Duplex Mode | Full-Duplex |
| Operating Temperature | -40°C to +85°C |
| Supply Voltage | 3 V to 3.6 V |
| Receiver Input Impedance | 12 kΩ |
| Receiver Hysteresis | 50 mV |
| Mounting Type | Surface Mount |
| Protocol | RS-422, RS-485 |
Key Features
- Slew Rate Limited Drivers: Minimize EMI and reduce reflections caused by improperly terminated cables, ensuring error-free data transmission.
- Thermal Shutdown Circuit: Prevents excessive power dissipation by forcing the driver output into a high impedance state during fault conditions.
- Current Limit Protection: Protects against short circuits over the whole common-mode voltage range.
- Fail-Safe Feature: Ensures a logic high output state if the inputs are unconnected (floating).
- Low Power Consumption: Operates using a single 3.3 V power supply.
- High Receiver Input Impedance: Allows up to 32 transceivers to be connected on the bus.
Applications
- Multipoint Bus Transmission Lines: Suitable for half-duplex and full-duplex bidirectional data communications.
- Daisy-Chain Network Topology: Can be used in daisy-chain networks or point-to-point applications.
- Line Repeaters: The ADM3488 can be used as a line repeater 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 data rate of the ADM3488ARZ?
The ADM3488ARZ supports data rates up to 250 kbps.
- What is the operating temperature range of the ADM3488ARZ?
The operating temperature range is -40°C to +85°C.
- What type of duplex mode does the ADM3488ARZ support?
The ADM3488ARZ supports full-duplex mode.
- What is the supply voltage range for the ADM3488ARZ?
The supply voltage range is 3 V to 3.6 V.
- What is the receiver input impedance of the ADM3488ARZ?
The receiver input impedance is 12 kΩ.
- Does the ADM3488ARZ have thermal shutdown protection?
Yes, it has a thermal shutdown circuit to prevent excessive power dissipation.
- What is the purpose of the slew rate limited drivers in the ADM3488ARZ?
The slew rate limited drivers minimize EMI and reduce reflections caused by improperly terminated cables.
- Can the ADM3488ARZ be used in daisy-chain network topology?
Yes, it can be used in daisy-chain networks or point-to-point applications.
- What is the fail-safe feature of the ADM3488ARZ?
The fail-safe feature ensures a logic high output state if the inputs are unconnected (floating).
- How many transceivers can be connected on the bus with the ADM3488ARZ?
Up to 32 transceivers can be connected on the bus due to the high receiver input impedance.
