Renesas' ISL3179E and ISL3180E are high ESD protected, 3.3 V powered, single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. Each device has low bus currents (+220 μA/-150 μA), so it presents a “1/5 unit load” to the RS-485 bus. This allows up to 160 transceivers on the network without violating the RS-485 specification’s 32-unit load maximum and without using repeaters. Receiver (Rx) 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 ISL3180E is configured for full duplex applications. The ISL3179E half-duplex version multiplexes the Rx inputs, and Tx outputs to allow a transceiver with an output disable function in 8 Ld packages. Hot plug circuitry ensures that the Tx, and Rx outputs remain in a high impedance state while the power supply stabilizes.
Features and Benefits
|
|
|
- High ESD protection on RS-485 I/O pins
- ISL3179E: ±16.5 kV IEC61000
- ISL3180E: ±12 kV HBM
- Class 3 HBM level on all other pins (ISL3179E): >9 kV
- Specified for +125°C operation
- High data rates: up to 40 Mbps
- 5 V tolerant logic inputs
- 1/5 unit load allows up to 160 devices on the bus
- Full fail-safe (open, shorted, terminated/undriven) receiver
- Pb-free (RoHS compliant)
- -7 V to +12 V common-mode input voltage range
|
|
- Hot plug: Tx and Rx outputs remain three-state during power-up
- Low quiescent current: 4 mA (max.)
- Low current shutdown mode: 1 μA (max.)
- Three-state Rx and Tx outputs
- 16/16.5 ns (max.) Tx/Rx propagation delays; 1.5 ns (max.) skew
- Operates from a single +3.3 V supply (10% tolerance)
- Current-limiting and thermal-shutdown for driver overload protection
|
| Applications |
|
|
- Motor controller/position encoder systems
- Factory automation
- Field bus networks
|
|
- Security networks
- Building environmental control systems
- Industrial/process control networks
|
Settings
Fast Delivery
Payment Types
Marketplace Product
Renesas' ISL3179E and ISL3180E are high ESD protected, 3.3 V powered, single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. Each device has low bus currents (+220 μA/-150 μA), so it presents a “1/5 unit load” to the RS-485 bus. This allows up to 160 transceivers on the network without violating the RS-485 specification’s 32-unit load maximum and without using repeaters. Receiver (Rx) 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 ISL3180E is configured for full duplex applications. The ISL3179E half-duplex version multiplexes the Rx inputs, and Tx outputs to allow a transceiver with an output disable function in 8 Ld packages. Hot plug circuitry ensures that the Tx, and Rx outputs remain in a high impedance state while the power supply stabilizes.
