ISL3298EMRTEP Datasheet, PDF (1/9 Pages) Intersil Corporation – 9RS-485/RS-422 Transmitter

16kV ESD Protected, +125°C, 3.0V to 5.5V, TDFN
Packaged, Low Power RS-485/RS-422 Transmitter
ISL3298EMRTEP
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
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
PART
NUMBER
ISL3298EMRTEP
FUNCTION
1 Tx
DATA RATE
(Mbps)
16
TABLE 1. SUMMARY OF FEATURES
SLEW-RATE
LIMITED?
NO
HOT
PLUG?
YES
V_L
PIN?
YES
TX
ENABLE?
YES
MAXIMUM
QUIESCENT I_CC
(µA)
150
LOW POWER
SHUTDOWN?
YES
PIN
COUNT
8-TDFN
July 28, 2011
1
FN7607.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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