Renesas ISL3035EIRTZ

Overview

ISL3035EIRTZ from Renesas Electronics is a 6-channel bidirectional auto-direction sensing logic level translator operating at up to 100Mbps, supporting VL = +1.35V to +3.2V and VCC = +2.2V to +3.6V supplies. It enables voltage translation between low-voltage microcontrollers (e.g., 1.8V I²C peripherals) and higher-voltage system interfaces (e.g., 3.3V host controllers), with ±15kV IEC61000-4-2 ESD protection on all I/O pins.

For engineers reviewing the ISL3035EIRTZ datasheet, ISL3035EIRTZ pinout, ISL3035EIRTZ application, or ISL3035EIRTZ equivalent, key selection considerations include its 6-channel auto-sensing architecture, 100Mbps data rate at VL ≥ 1.62V, shutdown current < 4µA, internal 30µA pull-up current per I/O, and compatibility with both push-pull and open-drain drivers without external direction control logic.

Technical Context

The ISL3035EIRTZ implements a channel-level accelerator-based architecture with independent high/low threshold detectors, one-shot pulse generators, and large NMOS/PMOS output drivers that actively drive outputs for ~3–4ns before reverting to weak hold mode. Each channel autonomously detects transitions on either I/OVL or I/OVCC to determine direction-eliminating need for external DIR pins.

It features dual-supply operation where VOH of I/OVL pins tracks VL and VOH of I/OVCC pins tracks VCC, with input thresholds referenced to respective supplies (e.g., VIHL ≈ VL − 0.2V, VIHC ≈ VCC − 0.4V). Shutdown is triggered by EN = GND or automatically when VCC falls below VL + 200mV, placing all I/Os in tri-state with 10–23kΩ internal pull-up resistors.

Key Specifications

Pinout & Package

ISL3035EIRTZ is housed in a RoHS-compliant 16-lead TQFN package (3.0mm × 3.0mm, 0.75mm height) with exposed thermal pad. Pin pitch is 0.5mm; pin #1 marked by index area in top-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional level translation applications.

Compared with TXS0108E and SN74AVC16T245, ISL3035EIRTZ delivers true auto-direction sensing, best-in-class ±15kV IEC61000-4-2 protection, and sub-4µA shutdown current - making it optimal for space-constrained, ESD-sensitive, and firmware-light embedded systems.

Availability

ISL3035EIRTZ is available at Aetrix Electronics and suitable for industrial sensor interfaces, mobile memory adapters, automotive debug ports, and wearable subsystem bridges requiring stable component supply and long-term lifecycle support.

Supply support for ISL3035EIRTZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications with focus on reliability, low power, and system integration.

The ISL3035EIRTZ belongs to Renesas' high-speed logic level translation product line, designed specifically for robust, low-latency voltage bridging in multi-rail systems where ESD resilience, auto-direction capability, and minimal external components are critical.

FAQ

What is the maximum data rate supported by the ISL3035EIRTZ?

The ISL3035EIRTZ supports up to 100Mbps when VL ≥ 1.62V and uses push-pull drivers with 150Ω source impedance and ≤15pF load capacitance. At VL = 1.35V, the guaranteed maximum data rate drops to 85Mbps. These values are measured under defined test conditions per the FN6492 datasheet and reflect actual achievable throughput in properly terminated systems.

Does the ISL3035EIRTZ require external pull-up resistors?

No, the ISL3035EIRTZ does not require external pull-up resistors for standard operation. It integrates 30µA internal pull-up current sources on all I/OVL and I/OVCC pins when enabled, sufficient for most push-pull and open-drain interfaces. External resistors are only recommended for high-speed open-drain signaling with heavy capacitive loads exceeding 35pF.

How does the auto-direction sensing work in the ISL3035EIRTZ?

The ISL3035EIRTZ uses per-channel threshold detectors and one-shot accelerators: a voltage transition on either I/OVL or I/OVCC pin triggers detection, momentarily defines that pin as input, and drives the corresponding output pin on the opposite side. After ~3–4ns of active driving, weak hold circuitry maintains the state until the next transition - eliminating need for external direction control logic.

What happens if VCC is powered before VL on the ISL3035EIRTZ?

If VCC powers before VL, the ISL3035EIRTZ remains in automatic shutdown mode until VCC exceeds VL by at least 200mV. During this time, all I/Os are tri-stated with 10–23kΩ internal pull-up resistors. No damage occurs, and the device safely transitions to active operation once the voltage differential condition is met - supporting flexible supply sequencing.

Is the ISL3035EIRTZ pin-compatible with the ISL3034E?

Yes, the ISL3035EIRTZ shares identical pinout, package (16 Ld TQFN, 3mm×3mm), electrical specifications, and functional behavior with the ISL3034E. Both devices are drop-in replacements per Renesas documentation; the ISL3035EIRTZ is a qualified alternate marking for the same silicon die and performance grade.