Renesas ISL3034EIRTZ

Overview

ISL3034EIRTZ 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. It enables voltage translation between low-voltage microcontrollers (e.g., 1.8V) and higher-voltage peripherals (e.g., 3.3V) without external direction control logic. Its ±15kV IEC61000-4-2 ESD protection on all I/O pins makes it suitable for memory card interfaces and portable system interconnects.

For engineers reviewing the ISL3034EIRTZ datasheet, ISL3034EIRTZ pinout, ISL3034EIRTZ application, or ISL3034EIRTZ equivalent, key selection considerations include its auto-direction sensing architecture, 16 Ld TQFN (3mm×3mm) package with thermal pad, shutdown current <2.5µA, 6.5ns typical propagation delay (I/OVL→I/OVCC), and compatibility with 4mA input drivers.

Technical Context

The ISL3034EIRTZ implements a channel-level auto-direction sensing mechanism using high/low threshold detectors, one-shot timers, and large NMOS/PMOS accelerator drivers that actively drive outputs for ~3–4ns before reverting to weak hold mode. Each channel operates independently, eliminating need for global DIR pins.

Its dual-supply architecture isolates VL-side and VCC-side logic domains, with I/OVL pins referenced to VL and I/OVCC pins referenced to VCC. Internal 30µA pull-up current sources enable operation with open-drain or push-pull drivers, while automatic shutdown triggers when VCC falls below VL by >200mV.

Key Specifications

Pinout & Package

ISL3034EIRTZ is packaged in a 16-lead TQFN (3mm × 3mm, 0.5mm pitch) with exposed thermal pad (Package Drawing L16.3x3A). Pin 1 is marked by index area; thermal pad must be soldered to PCB ground plane for thermal and ESD performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXS0106E and SN74AVC16T245, the ISL3034EIRTZ uniquely combines auto-direction sensing, integrated pull-up current sources, and ±15kV IEC61000-4-2 protection in a compact 16-pin TQFN-making it optimal for space-constrained, ESD-exposed, and software-light embedded designs.

Availability

ISL3034EIRTZ is available at Aetrix Electronics and suitable for memory card interfaces, multi-voltage microcontroller buses, industrial sensor hubs, and portable USB-C peripheral bridges requiring stable component supply and long-term production continuity.

Supply support for ISL3034EIRTZ 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 emphasis on reliability and longevity.

The ISL3034EIRTZ belongs to Renesas' high-speed logic level translation product line, designed specifically for robust, low-pin-count voltage bridging in multi-rail systems where ESD resilience and minimal firmware overhead are critical.

FAQ

What is the maximum data rate supported by the ISL3034EIRTZ under standard conditions?

The ISL3034EIRTZ supports up to 100Mbps when VL ≥ 1.62V, RSOURCE = 150Ω, and load capacitance is ≤15pF on I/OVL and ≤10pF on I/OVCC. At VL = 1.35V, the guaranteed maximum drops to 85Mbps. These values are measured with push-pull drivers and reflect real-world timing margins-not theoretical limits.

Does the ISL3034EIRTZ require external pull-up resistors for open-drain driver compatibility?

No, the ISL3034EIRTZ does not require external pull-up resistors for open-drain drivers. It integrates 30µA internal pull-up current sources on all I/OVL and I/OVCC pins during active operation. These sources ensure reliable high-level restoration and enable seamless interoperability with I²C, SMBus, and other open-drain protocols without added components.

How does the ISL3034EIRTZ handle power supply sequencing between VL and VCC?

The ISL3034EIRTZ safely handles arbitrary VL/VCC sequencing: either supply may power up first. The device remains in shutdown until VCC exceeds VL by at least 200mV. If VL rises above VCC during startup or shutdown, the IC automatically enters shutdown-no latch-up occurs, and absolute maximum ratings (VL up to +4V above GND) prevent damage.

What is the thermal pad connection requirement for the ISL3034EIRTZ 16 Ld TQFN package?

The exposed thermal pad on the ISL3034EIRTZ's 16 Ld TQFN package must be soldered to a solid copper ground plane on the PCB. This connection serves dual purposes: it dissipates heat to maintain junction temperature within limits (<+150°C), and it provides a low-impedance path for ESD current from all I/O pins-critical for achieving the rated ±15kV IEC61000-4-2 protection.

Can the ISL3034EIRTZ be used for unidirectional level translation, and what precautions apply?

Yes, the ISL3034EIRTZ can be used unidirectionally, but caution is required with heavy loads. Driving a low-impedance load (e.g., <500Ω) directly may cause oscillation or latch-up due to internal feedback. Renesas recommends inserting a buffer (e.g., 74LVC1G11) between the ISL3034EIRTZ output and the load-this maintains stability while preserving level-shifting functionality.