Overview
The ADM483EARZ from Analog Devices Inc. is a low-power, differential line transceiver designed for half-duplex data communication on multipoint bus transmission lines. It complies with EIA Standards RS-485 and RS-422, making it suitable for balanced data transmission. The device integrates a differential line driver and a differential line receiver, sharing the same differential pins, with either the driver or the receiver enabled at any given time. This transceiver is particularly useful in low-power RS-485 applications and EMI-sensitive systems due to its slew-rate limited outputs and low power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Data Rates | Up to 250 kbps |
| Supply Voltage | 5 V |
| Supply Current | 120 µA (active), 100 nA (shutdown) |
| Input Impedance | 12 kΩ |
| Bus Common-Mode Range | –7 V to +12 V |
| Operating Temperature Range | –40°C to +85°C |
| Package Type | 8-lead SOIC |
| ESD Protection | ±15 kV |
Key Features
- EIA RS-485/RS-422 compliant
- Slew-rate limited for low EMI
- Low power consumption (120 µA active, 100 nA shutdown)
- Up to 32 transceivers on one bus
- Outputs high-z when disabled or powered off
- Thermal shutdown and short-circuit protection
- Fail-safe feature: logic high output state if receiver inputs are unconnected or floating
- Pin-compatible with MAX483
Applications
- Low power RS-485 applications
- EMI-sensitive systems
- DTE-DCE interfaces
- Industrial control systems
- Packet switching networks
- Local area networks
- Level translators
Q & A
- What is the data rate capability of the ADM483EARZ?
The ADM483EARZ supports data rates up to 250 kbps.
- What is the supply voltage for the ADM483EARZ?
The supply voltage for the ADM483EARZ is 5 V.
- How much current does the ADM483EARZ consume in active and shutdown modes?
The ADM483EARZ consumes 120 µA in active mode and 100 nA in shutdown mode.
- What is the input impedance of the ADM483EARZ?
The input impedance of the ADM483EARZ is 12 kΩ.
- What is the bus common-mode range of the ADM483EARZ?
The bus common-mode range of the ADM483EARZ is –7 V to +12 V.
- What is the operating temperature range of the ADM483EARZ?
The operating temperature range of the ADM483EARZ is –40°C to +85°C.
- What type of package does the ADM483EARZ come in?
The ADM483EARZ comes in an 8-lead SOIC package.
- Does the ADM483EARZ have ESD protection?
Yes, the ADM483EARZ has ±15 kV ESD protection.
- What happens to the driver outputs during thermal shutdown?
During thermal shutdown, the driver outputs are disabled to prevent excessive power dissipation.
- What is the fail-safe feature of the receiver in the ADM483EARZ?
The receiver has a fail-safe feature that guarantees a logic high output state if the inputs are unconnected or floating.
