Overview
The ADM3483EARZ is a 3.3 V, low-power, half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc. This device is designed for balanced data transmission on multipoint bus transmission lines and is suitable for various industrial and telecommunications applications. It features ±15 kV ESD protection on the RS-485 input/output pins, ensuring robustness against electrical surges. The transceiver supports data rates up to 250 kbps and can be used in environments requiring reliable and error-free data communication.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Maximum Data Rate | - | - | 250 kbps | - | - |
| Differential Output Delay (tDD) | 600 ns | 900 ns | 1400 ns | - | RL = 60 Ω |
| Differential Output Transition Time (tTD) | 400 ns | 740 ns | 1200 ns | - | RL = 60 Ω |
| Propagation Delay (tPLH, tPHL) | 700 ns | 930 ns | 1500 ns | - | RL = 27 Ω |
| Propagation Delay Skew (|tPLH - tPHL|) | - | - | ±50 ns | - | RL = 27 Ω |
| Supply Voltage (VCC) | 3 V | - | 3.6 V | - | - |
| Operating Temperature | -40°C | - | 85°C | - | - |
| Package | - | - | 8-lead SOIC | - | - |
Key Features
- TIA/EIA RS-485/RS-422 compliant
- ±15 kV ESD protection on RS-485 input/output pins
- Half-duplex communication
- Data rate up to 250 kbps
- Receiver open-circuit, fail-safe design
- Low power shutdown current
- Outputs high-Z when disabled or powered off
- Common-mode input range: −7 V to +12 V
- Thermal shutdown and short-circuit protection
- Industry-standard 75176 pinout
- Slew rate limited drivers to minimize EMI and reduce reflections
Applications
- Power/energy metering
- Telecommunications
- EMI-sensitive systems
- Industrial control
- Local area networks
- Multipoint bus transmission lines
Q & A
- What is the maximum data rate supported by the ADM3483EARZ?
The ADM3483EARZ supports a maximum data rate of 250 kbps.
- What type of ESD protection does the ADM3483EARZ offer?
The ADM3483EARZ offers ±15 kV ESD protection on the RS-485 input/output pins.
- What is the operating temperature range of the ADM3483EARZ?
The operating temperature range is from -40°C to 85°C.
- What is the package type of the ADM3483EARZ?
The ADM3483EARZ is available in an 8-lead SOIC package.
- Does the ADM3483EARZ support full-duplex communication?
No, the ADM3483EARZ is designed for half-duplex communication.
- What is the common-mode input range of the ADM3483EARZ?
The common-mode input range is from −7 V to +12 V.
- Does the ADM3483EARZ have thermal shutdown protection?
- How many transceivers can be connected on the bus?
- What is the purpose of the slew rate limited drivers in the ADM3483EARZ?
The slew rate limited drivers minimize EMI and reduce reflections caused by improperly terminated cables, ensuring error-free data transmission.
- How does the receiver fail-safe feature work in the ADM3483EARZ?
If the inputs are unconnected (floating), the receiver contains a fail-safe feature that results in a logic high output state.
