ISL3293E Datasheet, PDF (1/17 Pages) Intersil Corporation – ±16.5kV ESD Protected, +125°C, 3.0V to 5.5V, SOT-23/TDFN Packaged, Low Power, RS-485/RS-422 Transmitters

ISL3293E, ISL3294E, ISL3295E, ISL3296E,
®
ISL3297E, ISL3298E
Data Sheet
September 19, 2007
FN6544.0
±16.5kV ESD Protected, +125°C, 3.0V to
5.5V, SOT-23/TDFN Packaged, Low Power,
RS-485/RS-422 Transmitters
The Intersil ISL3293E, ISL3294E, ISL3295E, ISL3296E,
ISL3297E, ISL3298E are ±16.5kV HBM ESD Protected (7kV
IEC61000 contact), 3.0V to 5.5V powered, single
transmitters for balanced communication using the RS-485
and RS-422 standards. These drivers have very low bus
currents (±40mA), so they present 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 ISL3293E, ISL3294E, ISL3296E, ISL3297E utilize slew
rate limited drivers which reduce EMI, and minimize reflections
from improperly terminated transmission lines, or from
unterminated stubs in multidrop and multipoint applications.
Drivers on the ISL3295E and ISL3298E are not limited, so they
can achieve the 20Mbps data rate. All versions are offered in
Industrial and Extended Industrial (-40°C to +125°C)
temperature ranges.
A 26% smaller footprint is available with the ISL3296E,
ISL3297E, ISL3298E’s TDFN package. These 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 companion single RS-485 receivers in micro packages,
please see the ISL3280E, ISL3281E, ISL3282E, ISL3283E,
ISL3284E data sheet.
Features
• 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 (ISL3296E through ISL3298E Only)
• Hot Plug - Tx Outputs Remain Three-state During
Power-up
• Low Tx Leakage Allows >256 Devices on the Bus
• High Data Rates . . . . . . . . . . . . . . . . . . . . . up to 20Mbps
• 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 Outputs
• 5V Tolerant Logic Inputs When V_CC ≤5V
• Pb-Free (RoHS Compliant)
Applications
• Clock Distribution
• High Node Count Systems
• Space Constrained Systems
• Security Camera Networks
• Building Environmental Control/Lighting Systems
• Industrial/Process Control Networks
PART
NUMBER
ISL3293E
ISL3294E
ISL3295E
ISL3296E
ISL3297E
ISL3298E
TABLE 1. SUMMARY OF FEATURES
DATA RATE SLEW-RATE
FUNCTION (Mbps)
LIMITED?
1 Tx
0.25
YES
HOT
PLUG?
YES
V_L PIN?
NO
TX
ENABLE?
(Note 10)
YES
1 Tx
0.5
YES
YES
NO
YES
1 Tx
20
NO
YES
NO
YES
1 Tx
0.25
YES
YES
YES
YES
1 Tx
0.5
YES
YES
YES
YES
1 Tx
20
NO
YES
YES
YES
MAXIMUM
QUIESCENT
I_CC (µA)
150
LOW POWER
SHUTDOWN?
YES
PIN
COUNT
6 Ld SOT
150
YES
6 Ld SOT
150
YES
6 Ld SOT
150
YES
8 Ld TDFN
150
YES
8 Ld TDFN
150
YES
8 Ld TDFN
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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