Renesas Electronics Corporation ±15kV ESD Protected, 3.3V, Full-duplex, 250kbps RS-485/RS-422 Transceiver with Tx/Rx enable ISL3170EIBZ

Description
The Intersil ISL317xE are ±15kV IEC61000 ESD protected, 3.3V powered single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. These devices have very low bus currents (+125mA/-100mA), so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 transceivers on the network without violating the RS-485 specification’s 32 unit load maximum, and without using repeaters. For example, in a remote utility meter reading system, individual meter readings are routed to a concentrator using an RS-485 network, so the high allowed node count minimizes the number of repeaters required. 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. Hot Plug circuitry ensures that the Tx and Rx outputs remain in a high impedance state while the power supply stabilizes. The ISL3170E through ISL3175E utilize slew rate limited drivers which reduce EMI, and minimize reflections from improperly terminated transmission lines, or unterminated stubs in multidrop and multipoint applications. Slew rate limited versions also include receiver input filtering to enhance noise immunity in the presence of slow input signals. The ISL3170E, ISL3171E, ISL3173E, ISL3174E, ISL3176E, ISL3177E are 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.
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Description
The Intersil ISL317xE are ±15kV IEC61000 ESD protected, 3.3V powered single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. These devices have very low bus currents (+125mA/-100mA), so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 transceivers on the network without violating the RS-485 specification’s 32 unit load maximum, and without using repeaters. For example, in a remote utility meter reading system, individual meter readings are routed to a concentrator using an RS-485 network, so the high allowed node count minimizes the number of repeaters required. 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. Hot Plug circuitry ensures that the Tx and Rx outputs remain in a high impedance state while the power supply stabilizes. The ISL3170E through ISL3175E utilize slew rate limited drivers which reduce EMI, and minimize reflections from improperly terminated transmission lines, or unterminated stubs in multidrop and multipoint applications. Slew rate limited versions also include receiver input filtering to enhance noise immunity in the presence of slow input signals. The ISL3170E, ISL3171E, ISL3173E, ISL3174E, ISL3176E, ISL3177E are 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.
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Datasheet
Datasheet Summary
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The Renesas RS485/422 transceiver, part number 94AC1627, operates at a data rate of 0.25 Mbps and is designed for balanced communication in RS-485 and RS-422 applications. It features a single 3.3V power supply and is capable of supporting up to 256 devices on the bus due to its low bus current characteristics, presenting a true "1/8 unit load." The device includes ±15kV ESD protection on the RS-485 I/O pins, ensuring reliability in electrically noisy environments. This transceiver supports both half and full duplex configurations, with hot plug capability that allows the Tx and Rx outputs to remain in a high impedance state during power-up. The receiver incorporates a full fail-safe design, ensuring a logic high output under floating or shorted conditions. Additionally, the device is RoHS compliant and available in a 14-pin SOIC package, making it suitable for various applications including automated utility meter reading systems and industrial control networks.

Datasheet Summary
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The Renesas RS485/422 transceiver, part number 94AC1627, operates at a data rate of 0.25 Mbps and is designed for balanced communication in RS-485 and RS-422 applications. It features a single 3.3V power supply and is capable of supporting up to 256 devices on the bus due to its low bus current characteristics, presenting a true "1/8 unit load." The device includes ±15kV ESD protection on the RS-485 I/O pins, ensuring reliability in electrically noisy environments. This transceiver supports both half and full duplex configurations, with hot plug capability that allows the Tx and Rx outputs to remain in a high impedance state during power-up. The receiver incorporates a full fail-safe design, ensuring a logic high output under floating or shorted conditions. Additionally, the device is RoHS compliant and available in a 14-pin SOIC package, making it suitable for various applications including automated utility meter reading systems and industrial control networks.

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Company
Product
Description
Supplier Links
±15kV ESD Protected, 3.3V, Full-duplex, 250kbps RS-485/RS-422 Transceiver with Tx/Rx enable - ISL3170EIBZ - Renesas Electronics Corporation
Milpitas, CA, USA
±15kV ESD Protected, 3.3V, Full-duplex, 250kbps RS-485/RS-422 Transceiver with Tx/Rx enable
ISL3170EIBZ
±15kV ESD Protected, 3.3V, Full-duplex, 250kbps RS-485/RS-422 Transceiver with Tx/Rx enable ISL3170EIBZ
The Intersil ISL317xE are ±15kV IEC61000 ESD protected, 3.3V powered single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. These devices have very low bus currents (+125mA/-100mA), so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 transceivers on the network without violating the RS-485 specification’s 32 unit load maximum, and without using repeaters. For example, in a remote utility meter reading system, individual meter readings are routed to a concentrator using an RS-485 network, so the high allowed node count minimizes the number of repeaters required. 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. Hot Plug circuitry ensures that the Tx and Rx outputs remain in a high impedance state while the power supply stabilizes. The ISL3170E through ISL3175E utilize slew rate limited drivers which reduce EMI, and minimize reflections from improperly terminated transmission lines, or unterminated stubs in multidrop and multipoint applications. Slew rate limited versions also include receiver input filtering to enhance noise immunity in the presence of slow input signals. The ISL3170E, ISL3171E, ISL3173E, ISL3174E, ISL3176E, ISL3177E are 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.

The Intersil ISL317xE are ±15kV IEC61000 ESD protected, 3.3V powered single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. These devices have very low bus currents (+125mA/-100mA), so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 transceivers on the network without violating the RS-485 specification’s 32 unit load maximum, and without using repeaters. For example, in a remote utility meter reading system, individual meter readings are routed to a concentrator using an RS-485 network, so the high allowed node count minimizes the number of repeaters required.
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.
Hot Plug circuitry ensures that the Tx and Rx outputs remain in a high impedance state while the power supply stabilizes.
The ISL3170E through ISL3175E utilize slew rate limited drivers which reduce EMI, and minimize reflections from improperly terminated transmission lines, or unterminated stubs in multidrop and multipoint applications. Slew rate limited versions also include receiver input filtering to enhance noise immunity in the presence of slow input signals.
The ISL3170E, ISL3171E, ISL3173E, ISL3174E, ISL3176E, ISL3177E are 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.

Supplier's Site Datasheet
Singapore
Interface Transceiver IC
710-ISL3170EIBZ
Interface Transceiver IC 710-ISL3170EIBZ
IC TRANSCEIVER FULL 1/1 14SOIC Product overview: ISL3170EIBZ from Renesas Electronics Corporation is an Interface Transceiver IC for serial communication, bus conversion, signal driving, receiver stages, and industrial networking. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include key electrical ratings, package details, and application requirements. Search-friendly keywords include interface IC, transceiver, driver, receiver, CAN, RS-485, Interface Transceiver IC, Drivers, Receivers, Transceivers. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 710-ISL3170EIBZ can be used for catalog matching and distributor lookup.

IC TRANSCEIVER FULL 1/1 14SOIC Product overview: ISL3170EIBZ from Renesas Electronics Corporation is an Interface Transceiver IC for serial communication, bus conversion, signal driving, receiver stages, and industrial networking. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include key electrical ratings, package details, and application requirements. Search-friendly keywords include interface IC, transceiver, driver, receiver, CAN, RS-485, Interface Transceiver IC, Drivers, Receivers, Transceivers. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 710-ISL3170EIBZ can be used for catalog matching and distributor lookup.

Supplier's Site Datasheet
Line Interface ICs - 2643587 - RS Components, Ltd.
Corby, Northants, United Kingdom
Line Interface ICs
2643587
Line Interface ICs 2643587
PB-FREE IEC6100 ESD 14LD SOIC,-40+85,3V

PB-FREE IEC6100 ESD 14LD SOIC,-40+85,3V

Supplier's Site
Line Interface ICs - 2643585 - RS Components, Ltd.
Corby, Northants, United Kingdom
Line Interface ICs
2643585
Line Interface ICs 2643585
PB-FREE IEC6100 ESD 14LD SOIC,-40+85,3V

PB-FREE IEC6100 ESD 14LD SOIC,-40+85,3V

Supplier's Site
Line Interface ICs - 2643587P - RS Components, Ltd.
Corby, Northants, United Kingdom
Line Interface ICs
2643587P
Line Interface ICs 2643587P
PB-FREE IEC6100 ESD 14LD SOIC,-40+85,3V

PB-FREE IEC6100 ESD 14LD SOIC,-40+85,3V

Supplier's Site
Transceiver, Rs485/422, 0.25Msps, 14Soic; Device Type Renesas - 94AC1627 - Newark, An Avnet Company
Chicago, IL, United States
Transceiver, Rs485/422, 0.25Msps, 14Soic; Device Type Renesas
94AC1627
Transceiver, Rs485/422, 0.25Msps, 14Soic; Device Type Renesas 94AC1627
TRANSCEIVER, RS485/422, 0.25MSPS, 14SOIC; Device Type:RS422 / RS485 Transceiver; IC Interface Type:RS422, RS485; No. of Drivers:1Drivers; Supply Voltage Min:3V; Supply Voltage Max:3.6V; Driver Case Style:SOIC; No. of Pins:14Pins; RoHS Compliant: Yes

TRANSCEIVER, RS485/422, 0.25MSPS, 14SOIC; Device Type:RS422 / RS485 Transceiver; IC Interface Type:RS422, RS485; No. of Drivers:1Drivers; Supply Voltage Min:3V; Supply Voltage Max:3.6V; Driver Case Style:SOIC; No. of Pins:14Pins; RoHS Compliant: Yes

Supplier's Site Datasheet
Sheung Wan, Hong Kong
RS-422/RS-485 Interface IC
ISL3170EIBZ
RS-422/RS-485 Interface IC ISL3170EIBZ
RS-422/RS-485 Interface IC IEC6100 ESD 14LD 3V RS-485 TRANS 1TX/1RX

RS-422/RS-485 Interface IC IEC6100 ESD 14LD 3V RS-485 TRANS 1TX/1RX

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Technical Specifications

  Renesas Electronics Corporation ERSAELECTRONICS PTE. LTD. RS Components, Ltd. Newark, An Avnet Company VAST STOCK CO., LIMITED
Product Category IC Interfaces IC Interfaces IC Interfaces IC Interfaces IC Interfaces
Product Number ISL3170EIBZ 710-ISL3170EIBZ 2643587 94AC1627 ISL3170EIBZ
Product Name ±15kV ESD Protected, 3.3V, Full-duplex, 250kbps RS-485/RS-422 Transceiver with Tx/Rx enable Interface Transceiver IC Line Interface ICs Transceiver, Rs485/422, 0.25Msps, 14Soic; Device Type Renesas RS-422/RS-485 Interface IC
Technology RS422; RS485
Device Type Transceiver Transceiver Receiver; Transmitter; Transceiver; Transceiver
Features ESD Protected RoHS RoHS; ESD Protected RoHS RoHS
Supply Voltage 3V; 3.6V Other; 3V ~ 3.6V Other; 3V 3.3V
Data Rate 250 kbps 250 kbps
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