The Intersil ISL32600E series are ±15 kV IEC61000, ESD-protected, micro-power, wide supply range transceivers for differential communication. The ISL32600E operates with VCC ≥ 2.7 V and has maximum supply currents as low as 100 µA with both the transmitter (Tx) and receiver (Rx) enabled. These transceivers have very low bus currents, so they present less than one-eighth unit load to the bus. This allows more than 256 transmitters on the network, without violating the RS-485 specification's 32-unit load maximum.
Rx inputs feature symmetrical switching thresholds and up to 65 mV of hysteresis to improve noise immunity and to reduce duty cycle distortion in the presence of slow moving input signals. The Rx input common mode range is the full -7 V to +12 V RS-485 range for supply voltages ≥ to 3 V.
Hot Plug circuitry ensures that the Tx and Rx outputs remain in a high impedance state while the power supply stabilizes.
This transceiver family utilizes slew rate limited drivers, which reduce EMI and minimize reflections from improperly terminated transmission lines or unterminated stubs in multidrop and multipoint applications.
The ISL32600E is configured for full duplex (separate Rx input and Tx output pins) applications. The half duplex versions multiplex the Rx inputs and Tx outputs to allow transceivers with output disable functions in 8 Ld packages.