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ISL3298EMRTEP Dataheets PDF



Part Number ISL3298EMRTEP
Manufacturers Intersil
Logo Intersil
Description Low Power RS-485/RS-422 Transmitter
Datasheet ISL3298EMRTEP DatasheetISL3298EMRTEP Datasheet (PDF)

DATASHEET ISL3298EMRTEP 16kV ESD Protected, +125°C, 3.0V to 5.5V, TDFN Packaged, Low Power RS-485/RS-422 Transmitter FN7607 Rev.2.00 Oct 24, 2019 The 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); therefore, it presents less than a 1/8 unit load to the RS-485 bus. This allows more than 256 transmitters on the network wi.

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DATASHEET ISL3298EMRTEP 16kV ESD Protected, +125°C, 3.0V to 5.5V, TDFN Packaged, Low Power RS-485/RS-422 Transmitter FN7607 Rev.2.00 Oct 24, 2019 The 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); therefore, 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 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, see the ISL3282EMRTEP datasheet. Applications • Clock distribution • High node count systems • Space constrained systems • Security camera networks • Building environmental control/lighting systems • Industrial/process control networks Related Literature For a full list of related documents, visit our website: • ISL3298EMRTEP device page 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 tri-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 PART NUMBER ISL3298EMRTEP FUNCTION 1 Tx DATA RATE (Mbps) 16 TABLE 1. SUMMARY OF FEATURES SLEW-RATE LIMITED? NO HOT PLUG? YES VL PIN? YES TX ENABLE? YES MAXIMUM QUIESCENT ICC (µA) 150 LOW POWER SHUTDOWN? YES PIN COUNT 8-TDFN FN7607 Rev.2.00 Oct 24, 2019 Page 1 of 11 ISL3298EMRTEP Truth Table TRANSMITTING INPUTS OUTPUTS DE DI Z Y 1101 1010 0 X High-Z * High-Z * NOTE: *Shutdown Mode Pin Descriptions Pin Configuration 8 LD TDFN TOP VIEW VL 1 DE 2 DI 3 GND 4 D 8 VCC 7Z 6Y 5 GND PIN NUMBER 1 2 3 4, 5 6 7 8 PIN SYMBOL FUNCTION VL Logic-Level supply which sets the VIL/VIH levels for the DI and DE pins. Power-up this supply after VCC, and keep VL ≤VCC. DE Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high, and are high impedance when DE is low. If the driver enable function isn’t needed, connect DE to VCC (or VL) through a 1kΩ to 3kΩ resistor. DI Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and output Z low. GND Ground connection. This is also the potential of the TDFN thermal pad. Y ±15kV HBM, ±7kV IEC61000 (contact method) ESD Protected RS-485/422 level, noninverting transmitter output. Z ±15kV HBM, ±7kV IEC61000 (contact method) ESD Protected RS-485/422 level, inverting transmitter output. VCC System power supply input (3.0V to 5.5V). On devices with a VL pin, power-up VCC first. Ordering Information PART NUMBER (Note) VENDOR ITEM DRAWING PART MARKING ISL3298EMRTEP-TK V62/10602-01XB 298 NOTE: See TB347 for details about reel specifications. TEMP. RANGE (°C) -55 to +125 TAPE AND REEL (Units) 1k PACKAGE 8 Ld TDFN PKG. DWG. # L8.2X3A FN7607 Rev.2.00 Oct 24, 2019 Page 2 of 11 ISL3298EMRTEP Typical Operating Circuit VCC LOGIC DEVICE (µP, ASIC, UART) NETWORK WITH VL PIN FOR INTERFACING TO LOWER VOLTAGE LOGIC DEVICES 2.5V +3.3V TO 5V +3.3V 1.8V 64 VL VCC + 0.1µF 0.1µF + 8 VCC 1 VL ISL3282EMRTEP ISL3298EMRTEP 1 RO R 7 RE A5 B8 RT 6Y 7Z D DI 3 DE 2 GND 2 GND 4, 5 VCC LOGIC DEVICE (µP, ASIC, UART) Test Circuits and Wav.


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