The Intersil ISL3298EMRTEP is a ±16.5kV HBM ESD Protected (7kV IEC61000 contact), 3.0V to 5.5V powered, single transmitter for balanced communication using the RS-485 and RS-422 standards. This driver has very low bus currents (±40mA), so it presents less than a "1/8 unit load" to the RS-485 bus. This allows more than 256 transmitters on the network without violating the RS-485 specification's 32 unit load maximum, and without using repeaters.
Hot Plug circuitry ensures that the Tx outputs remain in a high impedance state while the power supply stabilizes.
The driver on the ISL3298EMRTEP is not limited, so it can achieve a 16Mbps data rate and is offered in the -55°C to +125°C temperature range.
This devices also feature a logic supply pin (VL) that sets the switching points of the DE and DI inputs to be compatible with a lower supply voltage in mixed voltage systems.
For a companion single RS-485 receiver in micro packages, please see the ISL3282EMRTEP data sheet.
Key Features
- Specifications per DLA VID V62/10602
- Full Mil-Temp Electrical Performance from -55°C to +125°C
- Controlled Baseline with One Wafer Fabrication Site and One Assembly/Test Site
- Full Homogeneous Lot Processing in Wafer Fab
- No Combination of Wafer Fabrication Lots in Assembly
- Full Traceability Through Assembly and Test by Date/Trace Code Assignment
- Enhanced Process Change Notification
- Enhanced Obsolescence Management
- Eliminates Need for Up-Screening a COTS Component
- High ESD Protection on RS-485 Outputs: ±16.5kV HBM
- IEC61000-4-2 Contact Test Method: ±7kV
- Class 3 ESD Level on all Other Pins: >8kV HBM
- Specified for +125°C Operation (VCC ≤ 3.6V Only)
- Logic Supply Pin (VL) Eases Operation in Mixed Supply Systems
- Hot Plug - Tx Output Remains Three-state During Power-up
- Low Tx Leakage Allows >256 Devices on the Bus
- High Data Rates: up to 16Mbps
- Low Quiescent Supply Current: 150µA (Max)
- Very Low Shutdown Supply Current: 1µA (Max)
- -7V to +12V Common Mode Output Voltage Range (VCC ≤ 3.6V Only)
- Current Limiting and Thermal Shutdown for Driver Overload Protection (VCC ≤ 3.6V Only)
- Tri-statable Tx Output
- 5V Tolerant Logic Input When VCC ≤5V
Applications
- Clock Distribution
- High Node Count Systems
- Space Constrained Systems
- Security Camera Networks
- Building Environmental Control/Lighting Systems
- Industrial/Process Control Networks
Order Information| Part Number | Package Type | Weight(g) | Pins | MSL Rating | Peak Temp (°C) | RoHS Status |
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| ISL3298EMRTEP-T | 8 Ld DFN T+R | 0.012 | 8 | 1 | 240 | |
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| ISL3298EMRTEP-TK | 8 Ld DFN T+R | 0.012 | 8 | 1 | 240 | |
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