ISL3170EIBZ

Overview

The ISL3170EIBZ is a single RS-485/RS-422 transceiver manufactured by Renesas Electronics. It operates on a single 3.3V supply and supports data rates up to 20Mbps with slew rate limited drivers. The device features ±15kV IEC61000 ESD protection on the bus pins and full fail-safe receivers. It presents a true 1/8 unit load, allowing up to 256 devices on the network. Key electrical parameters include a quiescent current of 800µA maximum and shutdown current of 10nA. The common-mode input/output voltage range spans from -7V to +12V. It is housed in an 8-pin SOIC package.

Feature Summary

• IEC61000 ESD protection rated at ±15kV on RS-485 I/O pins
• Full fail-safe receiver design for open, short, or floating inputs
• Hot plug capability maintaining three-state outputs during power-up
• True 1/8 unit load enabling high node density without repeaters

Applications

• Remote utility meter reading systems
• Industrial automation networks
• Building automation control systems

Procurement Notes

Verify the specific ordering suffix against official Renesas documentation to confirm package type and tape/reel specifications. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and authenticity before finalizing procurement orders.

Selection Notes

Select this component when designing RS-485 networks requiring high node counts due to its 1/8 unit load characteristic. It is suitable for applications needing robust ESD protection and fail-safe operation in noisy environments. Verify that the 3.3V supply voltage aligns with the system power architecture and that the 20Mbps data rate satisfies communication speed requirements.

Part Context

The ISL3170EIBZ belongs to the ISL317xE family of low-power, high-speed transceivers. This series is designed to meet RS-485 and RS-422 standards while offering enhanced ESD immunity. The family includes variants with different pinouts and speeds, but the ISL3170E specifically focuses on half-duplex applications with slew rate limiting to reduce electromagnetic interference.

Replacement Considerations

ISL3172EIBZ: Similar half-duplex transceiver with comparable performance characteristics.

FAQ

What is the maximum data rate supported by the ISL3170EIBZ?

The ISL3170EIBZ supports data rates up to 20Mbps.

Does the ISL3170EIBZ support hot plugging?

Yes, the device features hot plug circuitry that keeps Tx and Rx outputs in a high impedance state during power-up.

How many devices can be connected on the bus using this transceiver?

Due to its true 1/8 unit load characteristic, up to 256 transceivers can be connected on the bus without violating RS-485 specifications.