MAX3488AE
+3.3V-Powered, ±20kV ESD-Protected, 20Mbps and Slew-Rate-Limited RS-485/RS-422 Transceivers
High ESD protection increases robustness and reliability of industrial end equipment
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Devices in the MAX3483AE family (MAX3483AE/MAX3485AE/MAX3488AE/MAX3490AE/MAX3491AE) are ±20kV ESD-protected RS-485/422 transceivers, optimized for extended cable runs in noisy environments. All devices operate from a single 3.3V supply.
The MAX3483AE and MAX3485AE are half-duplex transceivers. The MAX3488AE, MAX3490AE, and MAX3491AE are full-duplex transceivers. The MAX3483AE/85AE have a 1-unit load receiver input impedance, allowing up to 32 transceivers on the bus. The MAX3488AE/90AE/91AE have a 1/4-unit load receiver input impedance, allowing up to 128 transceivers on the bus. Each transceiver includes a fail-safe receiver, ensuring that the receiver output (RO) is high when inputs are shorted, open, or connected to a three-state bus.
The MAX3483AE, MAX3485AE, MAX3488AE, and MAX3490AE are available in industry standard 8-pin SO package, while the MAX3491AE is available in a 14-pin SO package.
Key Features
- Integrated Protection Increases Robustness
- High ESD Protection
- ±20kV HBM ESD per JEDEC JS-001-2012
- ±15kV Air Gap per IEC 61000-4-2
- ±8kV Contact ESD per IEC 61000-4-2
- Short-Circuit Protected Outputs
- True Fail-Safe Receiver Prevents False Transition on Receiver Input Short or Open Events
- Hot-Swap Capability Eliminates False Transitions During Power-Up or Hot Insertion
- High ESD Protection
- High-Speed Data Rates up to 20Mbps
- Up to -40°C to +125°C Operating Temperature
- Allows Up to 128 Transceivers on the Bus
Applications/Uses
- Industrial-Control Local Area Networks
- Telecommuncations
- Transceivers for EMI-Sensitive Applications
| # Tx/Rx | 1Tx + 1Rx |
| Duplex | Full |
| VSUPPLY (V) | 3.3 |
| Data Rate (kbps) (min) | 250 |
| ICC (mA) (typ) | 1.9 |
| ESD Protect. (±kV) | 20 |
| Tx EN | No |
| Rx EN | No |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | SOIC (N)/8 |
| Budgetary Price (See Notes) | $2.18 @1k |
Technical Docs
| Data Sheet | +3.3V-Powered, ±20kV ESD-Protected, 20Mbps and Slew-Rate-Limited RS-485/RS-422 Transceivers | Nov 10, 2017 | |
| Tutorial | RS-485: Still the Most Robust Communication |
Click any title below to view the detail page where available.
Essential Analog Toolkit: RS-485 Transceivers 
Support & Training
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Parameters
| # Tx/Rx | 1Tx + 1Rx |
| Duplex | Full |
| VSUPPLY (V) | 3.3 |
| Data Rate (kbps) (min) | 250 |
| ICC (mA) (typ) | 1.9 |
| ESD Protect. (±kV) | 20 |
| Tx EN | No |
| Rx EN | No |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | SOIC (N)/8 |
| Budgetary Price (See Notes) | $2.18 @1k |
Key Features
- Integrated Protection Increases Robustness
- High ESD Protection
- ±20kV HBM ESD per JEDEC JS-001-2012
- ±15kV Air Gap per IEC 61000-4-2
- ±8kV Contact ESD per IEC 61000-4-2
- Short-Circuit Protected Outputs
- True Fail-Safe Receiver Prevents False Transition on Receiver Input Short or Open Events
- Hot-Swap Capability Eliminates False Transitions During Power-Up or Hot Insertion
- High ESD Protection
- High-Speed Data Rates up to 20Mbps
- Up to -40°C to +125°C Operating Temperature
- Allows Up to 128 Transceivers on the Bus
Applications/Uses
- Industrial-Control Local Area Networks
- Telecommuncations
- Transceivers for EMI-Sensitive Applications
Description
Devices in the MAX3483AE family (MAX3483AE/MAX3485AE/MAX3488AE/MAX3490AE/MAX3491AE) are ±20kV ESD-protected RS-485/422 transceivers, optimized for extended cable runs in noisy environments. All devices operate from a single 3.3V supply.
The MAX3483AE and MAX3485AE are half-duplex transceivers. The MAX3488AE, MAX3490AE, and MAX3491AE are full-duplex transceivers. The MAX3483AE/85AE have a 1-unit load receiver input impedance, allowing up to 32 transceivers on the bus. The MAX3488AE/90AE/91AE have a 1/4-unit load receiver input impedance, allowing up to 128 transceivers on the bus. Each transceiver includes a fail-safe receiver, ensuring that the receiver output (RO) is high when inputs are shorted, open, or connected to a three-state bus.
The MAX3483AE, MAX3485AE, MAX3488AE, and MAX3490AE are available in industry standard 8-pin SO package, while the MAX3491AE is available in a 14-pin SO package.
Technical Docs
| Data Sheet | +3.3V-Powered, ±20kV ESD-Protected, 20Mbps and Slew-Rate-Limited RS-485/RS-422 Transceivers | Nov 10, 2017 | |
| Tutorial | RS-485: Still the Most Robust Communication |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal
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