Overview
The ADM3490EARZ-REEL7 is a 3.3 V, low-power, full-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc. This device is designed for balanced data transmission and complies with TIA/EIA standards for RS-485 and RS-422. It features dedicated differential line driver outputs and receiver inputs, making it suitable for multipoint bus transmission lines. The transceiver includes several protective features such as thermal shutdown, short-circuit protection, and 15 kV ESD protection, ensuring reliable operation in various environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Maximum Data Rate | 12 | 15 | - | Mbps | - |
| Differential Output Delay (tDD) | 1 | 22 | 35 | ns | RL = 60 Ω |
| Differential Output Transition Time (tTD) | 3 | 11 | 25 | ns | RL = 60 Ω |
| Propagation Delay (tPLH, tPHL) | 7 | 23 | 35 | ns | RL = 27 Ω |
| Propagation Delay Skew (tRPDS) | - | - | ±10 | ns | VID = 0 V to 3.0 V, CL = 15 pF |
| Supply Voltage (VCC) | 3 | - | 3.6 | V | - |
| Max Supply Current | - | - | 2.2 | mA | - |
| Max Operating Temperature | - | - | 85 | °C | - |
| Package Type | - | - | - | 8-SOIC (0.154", 3.90mm Width) | - |
Key Features
- Full-Duplex Operation: Dedicated differential line driver outputs and receiver inputs, allowing simultaneous transmission and reception of data.
- High-Speed Data Rates: Supports data rates up to 12 Mbps.
- ESD Protection: 15 kV ESD protection for enhanced reliability.
- Thermal Shutdown and Short-Circuit Protection: Prevents excessive power dissipation and protects against faults or bus contention.
- Fail-Safe Receiver: Ensures a logic high output state if the inputs are unconnected (floating).
- Low Power Consumption: Maximum supply current of 2.2 mA, making it suitable for power-sensitive applications.
- Industry-Standard Pinout: Compatible with the industry-standard 75176 pinout.
- Wide Common-Mode Range: Common-mode input range from -7 V to +12 V.
Applications
- Power/Energy Metering: Suitable for use in power and energy metering systems due to its reliability and protective features.
- Telecommunications: Used in telecommunications systems for balanced data transmission.
- Industrial Control: Ideal for industrial control systems requiring robust and reliable communication.
- EMI-Sensitive Systems: Slew rate limited drivers minimize EMI, making it suitable for EMI-sensitive environments.
- Local Area Networks: Can be used in local area networks for reliable data transmission).
Q & A
- What is the maximum data rate supported by the ADM3490EARZ-REEL7?
The ADM3490EARZ-REEL7 supports data rates up to 12 Mbps.
- What type of package does the ADM3490EARZ-REEL7 come in?
The ADM3490EARZ-REEL7 comes in an 8-SOIC (0.154", 3.90mm Width) package.
- What is the supply voltage range for the ADM3490EARZ-REEL7?
The supply voltage range is from 3 V to 3.6 V.
- Does the ADM3490EARZ-REEL7 have ESD protection?
Yes, it has 15 kV ESD protection.
- What are the protective features of the ADM3490EARZ-REEL7?
The device features thermal shutdown, short-circuit protection, and ESD protection.
- What is the maximum operating temperature for the ADM3490EARZ-REEL7?
The maximum operating temperature is 85°C.
- Is the ADM3490EARZ-REEL7 suitable for full-duplex operation?
Yes, it supports full-duplex operation with dedicated differential line driver outputs and receiver inputs.
- What is the common-mode input range for the ADM3490EARZ-REEL7?
The common-mode input range is from -7 V to +12 V.
- Does the ADM3490EARZ-REEL7 have a fail-safe receiver feature?
Yes, it ensures a logic high output state if the inputs are unconnected (floating).
- What are some typical applications of the ADM3490EARZ-REEL7?
Typical applications include power/energy metering, telecommunications, industrial control, EMI-sensitive systems, and local area networks.
