Overview
The ADM485JRZ from Analog Devices Inc. is a differential line transceiver designed for high-speed bidirectional data communication on multipoint bus transmission lines. It complies with EIA standards RS-485 and RS-422. The device contains a differential line driver and a differential line receiver, both of which can be enabled independently. When disabled, the outputs are three-stated. Fabricated on BiCMOS technology, it combines low power CMOS with fast switching bipolar technology, ensuring low power consumption and high switching speeds.
The ADM485JRZ is suitable for various applications, including low power RS-485 systems, DTE/DCE interfaces, packet switching, local area networks, data concentration, data multiplexers, and integrated services digital networks (ISDN).
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | ADM485JRZ-REEL7 |
| Package | 8-lead SOIC-N |
| Supply Voltage | 4.75 V to 5.25 V |
| Data Rate | Up to 5 Mbps |
| Number of Drivers/Receivers | 1 Driver, 1 Receiver |
| Bus Common-Mode Range | -7 V to +12 V |
| Operating Temperature Range | 0°C to 70°C |
| Driver Propagation Delay | 10 ns typical |
| Receiver Propagation Delay | 15 ns typical |
| Protection Features | Thermal shutdown, Short-circuit protection, ESD protection |
Key Features
- High-speed bidirectional data communication up to 5 Mbps.
- Independent enable/disable for driver and receiver.
- High-Z outputs when disabled or powered down.
- Fail-safe receiver feature resulting in a logic high output state if inputs are unconnected.
- Thermal shutdown protection to prevent excessive power dissipation.
- Short-circuit protection and ESD protection for all inputs and outputs.
- BiCMOS technology combining low power CMOS with fast switching bipolar technology.
- Supports up to 32 transceivers on a bus.
Applications
- Low power RS-485 systems.
- DTE/DCE interfaces.
- Packet switching.
- Local area networks (LANs).
- Data concentration.
- Data multiplexers.
- Integrated services digital network (ISDN).
Q & A
- What is the primary function of the ADM485JRZ?
The ADM485JRZ is a differential line transceiver designed for high-speed bidirectional data communication on multipoint bus transmission lines, complying with EIA standards RS-485 and RS-422.
- What is the data rate capability of the ADM485JRZ?
The ADM485JRZ can operate at data rates up to 5 Mbps.
- How many drivers and receivers does the ADM485JRZ contain?
The ADM485JRZ contains 1 driver and 1 receiver.
- What is the operating temperature range of the ADM485JRZ?
The operating temperature range is 0°C to 70°C.
- What protection features does the ADM485JRZ have?
The ADM485JRZ features thermal shutdown protection, short-circuit protection, and ESD protection for all inputs and outputs.
- How many transceivers can be connected on a bus simultaneously?
Up to 32 transceivers can be connected on a bus simultaneously.
- What is the bus common-mode range of the ADM485JRZ?
The bus common-mode range is -7 V to +12 V.
- What is the propagation delay for the driver and receiver?
The driver propagation delay is 10 ns typical, and the receiver propagation delay is 15 ns typical.
- Does the ADM485JRZ have fail-safe features for the receiver?
- What technology is used in the fabrication of the ADM485JRZ?
The ADM485JRZ is fabricated on BiCMOS technology, combining low power CMOS with fast switching bipolar technology.
