DATASHEET ISL3293E, ISL3294E, ISL3295E ISL3296E, ISL3297E, FN6544 Rev 3.00 ISL3298E September 25, 2015 The Intersil ISL3293E, ISL3294E, ISL3295E, ISL3296E, Features ISL3297E, ISL3298E are 16.5kV HBM ESD Protected (7kV High ESD protection on RS-485 outputs 16.5kV HBM IEC61000 contact), 3.0V to 5.5V powered, single transmitters for balanced communication using the RS-485 and RS-422 - IEC61000-4-2 contact test method . 7kV standards. These drivers have very low bus currents (40mA), - Class 3 ESD level on all other pins >8kV HBM so they present less than a 1/8 unit load to the RS-485 bus. Specified for +125C operation (V 3.6V only) CC This allows more than 256 transmitters on the network without violating the RS-485 specifications 32 unit load maximum, and Logic supply pin (V ) eases operation in mixed supply L without using repeaters. systems (ISL3296E through ISL3298E only) Hot Plug circuitry ensures that the Tx outputs remain in a high Hot plug - Tx outputs remain three-state during power-up impedance state while the power supply stabilizes. Low Tx leakage allows >256 devices on the bus The ISL3293E, ISL3294E, ISL3296E, ISL3297E utilize slew rate High data rates up to 20Mbps limited drivers which reduce EMI, and minimize reflections from Low quiescent supply current . 150A (max) improperly terminated transmission lines, or from unterminated - Very low shutdown supply current . 1A (max) stubs in multidrop and multipoint applications. Drivers on the ISL3295E and ISL3298E are not limited, so they can achieve the -7V to +12V common-mode output voltage range 20Mbps data rate. All versions are offered in industrial and (V 3.6V only) CC extended industrial (-40C to +125C) temperature ranges. Current limiting and thermal shutdown for driver overload A 26% smaller footprint is available with the ISL3296E, protection (V 3.6V only) CC ISL3297E, ISL3298Es TDFN package. These devices also Tri-statable Tx outputs feature a logic supply pin (V ) that sets the switching points of L 5V tolerant logic inputs when V 5V the DE and DI inputs to be compatible with a lower supply CC voltage in mixed voltage systems. Pb-free (RoHS compliant) For companion single RS-485 receivers in micro packages, please see the ISL3280E, ISL3281E, ISL3282E, ISL3283E, Applications ISL3284E datasheet. Clock distribution High node count systems Space constrained systems Security camera networks Building environmental control/lighting systems Industrial/process control networks TABLE 1. SUMMARY OF FEATURES DATA TX MAXIMUM RATE SLEW RATE HOT V ENABLE QUIESCENT LOW POWER PIN L PART NUMBER FUNCTION (Mbps) LIMITED PLUG PIN (Note 11) I (A) SHUTDOWN COUNT CC ISL3293E (No longer available or supported, 1 Tx 0.25 YES YES NO YES 150 YES 6 Ld SOT recommended replacement: ISL32613E) ISL3294E (No longer available or supported, 1 Tx 0.5 YES YES NO YES 150 YES 6 Ld SOT recommended replacement: ISL32614E) ISL3295E 1 Tx 20 NO YES NO YES 150 YES 6 Ld SOT ISL3296E 1 Tx 0.25 YES YES YES YES 150 YES 8 Ld TDFN (No longer available or supported) ISL3297E 1 Tx 0.5 YES YES YES YES 150 YES 8 Ld TDFN (No longer available or supported) ISL3298E 1 Tx 20 NO YES YES YES 150 YES 8 Ld TDFN FN6544 Rev 3.00 Page 1 of 17 September 25, 2015ISL3293E, ISL3294E, ISL3295E ISL3296E, ISL3297E, ISL3298E Pin Configurations ISL3293E, ISL3294E, ISL3295E ISL3296E, ISL3297E, ISL3298E (6 LD SOT-23) (8 LD TDFN) TOP VIEW TOP VIEW DI 1 6 Y V V 1 8 L CC V 2 D 5 GND CC DE Z 2 7 D DE 3 4 Z DI Y 3 6 GND GND 4 5 NOTE: BOTH GND PINS MUST BE CONNECTED Truth Tables Pin Descriptions TRANSMITTING PIN NAME FUNCTION INPUTS OUTPUTS DE Driver output enable. The driver outputs, Y and Z, are enabled by DE (Note 11)DI Z Y bringing DE high, and are high impedance when DE is low. If the driver enable function isnt needed, connect DE to V (or V ) 1 101 CC L through a 1k to 3k resistor. 1 010 DI Driver input. A low on DI forces output Y low and output Z high. 0X High-Z * High-Z * Similarly, a high on DI forces output Y high and output Z low. NOTE: *Shutdown Mode 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. V System power supply input (3.0V to 5.5V). On devices with a V CC L pin powered from a separate supply, power-up V first. CC V Logic-level supply which sets the V /V levels for the DI and DE L IL IH pins (ISL3296E, ISL3297E, ISL3298E only). If V and V are L CC different supplies, power-up this supply after V , and keep CC V V . L CC FN6544 Rev 3.00 Page 2 of 17 September 25, 2015