Overview
The ADM488ABRZ is a low-power, full-duplex RS-485/RS-422 transceiver produced by Analog Devices Inc. This component is designed for balanced data transmission and complies with both EIA RS-485 and RS-422 standards. It features a single differential line driver and a single differential line receiver, making it suitable for full-duplex data transfer. The ADM488ABRZ operates from a single 5 V ± 10% power supply and is ruggedized to handle electrically harsh environments and high RF field strengths without special shielding precautions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 4.75V to 5.25V | V |
| Operating Temperature | -40°C to +85°C | °C |
| Data Rate | Up to 250 kbps | kbps |
| Receiver Hysteresis | 70 mV | mV |
| Driver Output Enable | High level enables, Low level high impedance | - |
| Receiver Output Enable | Low level enables, High level high impedance (ADM489A only) | - |
| Input Impedance | 12 kΩ | kΩ |
| Number of Transceivers on Bus | Up to 32 | - |
| Package Type | 8-SOIC (0.154, 3.90mm Width) | - |
| Number of Pins | 8 | - |
Key Features
- Low power consumption with a supply current of 30 μA
- Slew rate limited for low electromagnetic interference (EMI)
- Short-circuit protection and thermal shutdown circuitry
- Fail-safe receiver output state (logic high if inputs are unconnected)
- Immunity to high RF field strengths without special shielding
- Full-duplex operation with a single differential line driver and receiver
- Compliance with EIA RS-485 and RS-422 standards
Applications
- Low power RS-485 and RS-422 systems
- DTE-DCE interfaces
- Packet switching and local area networks
- Data concentration and data multiplexers
- Integrated services digital network (ISDN)
Q & A
- What is the operating voltage range of the ADM488ABRZ?
The ADM488ABRZ operates from a single 5 V ± 10% power supply, which translates to a voltage range of 4.75V to 5.25V.
- What is the maximum data rate supported by the ADM488ABRZ?
The ADM488ABRZ supports data rates up to 250 kbps.
- How many transceivers can be connected on the bus?
Up to 32 transceivers can be connected on the differential bus.
- What is the input impedance of the ADM488ABRZ?
The input impedance is 12 kΩ.
- Does the ADM488ABRZ have built-in protection against short circuits?
- What is the receiver hysteresis of the ADM488ABRZ?
The receiver hysteresis is 70 mV.
- Is the ADM488ABRZ suitable for full-duplex data transmission?
- What is the operating temperature range of the ADM488ABRZ?
The operating temperature range is -40°C to +85°C.
- Does the ADM488ABRZ have any special shielding requirements for high RF field strengths?
No, the ADM488ABRZ is immune to high RF field strengths without special shielding precautions.
- What package type is the ADM488ABRZ available in?
The ADM488ABRZ is available in an 8-SOIC package.
