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The Intersil ISL3282EMRTEP is a ±16.5kV IEC61000 ESD protected, 3.0V to 5.5V powered, single receiver that meets both the RS-485 and RS-422 standards for balanced communication. This receiver has very low bus currents (+125μA/-100μA), so it presents a true “1/8 unit load” to the RS-485 bus. This allows up to 256 receivers on the network without violating the RS-485 specification’s 32 unit load maximum and without using repeaters.

Receiver inputs feature a “Full Fail-Safe” design, which ensures a logic high Rx output if Rx inputs are floating, shorted, or terminated but undriven.

The ISL3282EMRTEP includes an active low enable pin and is offered in the Military Temperature range (-55°C to +125°C).

A 26% smaller footprint is available with the TDFN package. This device also features a logic supply pin (V_L) that sets the V_OH level of the RO output (and the switching points of the RE/RE input) to be compatible with another supply voltage in mixed voltage systems.

Device Information

The specifications for an Enhanced Product (EP) device are defined in a Vendor Item Drawing (VID), which is controlled by the Defense Supply Center in Columbus (DSCC). “Hot-links” to the applicable VID and other supporting application information are provided on our website.

Key Features

• Specifications per DSCC VID V6210601
• Full military temperature 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
• ±16.5kV IEC61000 ESD protection on RS-485 inputs
• Class 3 ESD level on all other pins: >5kV HBM
• Wide supply rang: 3.0V to 5.5V
• Specified for +125°C operation
• Logic supply pin (VL) eases operation in mixed supply systems
• Full fail-safe (open, short, terminated/undriven)
• True 1/8 unit load allows up to 256 devices on the bus
• High data rates: up to 16Mbps
• Low quiescent supply current: 500μA (maximum)
• Very low shutdown supply current: 20μA (maximum)
• -7V to +12V common-mode input voltage range
• Tri-statable Rx available (active low or high EN input)
• 5V tolerant logic inputs when VCC ≤ 5V

Applications

• Clock distribution
• High node count systems
• Space constrained systems
• Security camera networks
• Building environmental control/lighting systems
• Industrial/process control networks