ISL3298EMRTEP
16kV ESD Protected, +125°C, 3.0V to 5.5V, TDFN Packaged, Low Power RS-485/RS-422 Transmitter

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 (V_CC ≤ 3.6V Only)
• Logic Supply Pin (V_L) 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 (V_CC ≤ 3.6V Only)
• Current Limiting and Thermal Shutdown for Driver Overload Protection (V_CC ≤ 3.6V Only)
• Tri-statable Tx Output
• 5V Tolerant Logic Input When V_CC ≤5V

Description

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 (V_L) 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.

Applications

• Clock Distribution
• High Node Count Systems
• Space Constrained Systems
• Security Camera Networks
• Building Environmental Control/Lighting Systems
• Industrial/Process Control Networks