onsemi NL37WZ06USG

Overview

NL37WZ06USG from onsemi is a triple inverter IC with open-drain outputs, designed for level-shifting and wired-OR logic applications across 1.65 V to 5.5 V supply rails. It delivers 2.1 ns typical propagation delay at 5 V, supports ±24 mA output drive at 3.0 V, and features IOFF partial power-down protection. It is commonly used in I²C bus buffering and mixed-voltage interface translation.

For engineers reviewing the NL37WZ06USG datasheet, pinout, applications, or equivalent options, key selection criteria include open-drain compatibility with 5.5 V-tolerant inputs, sub-5 ns AC performance across voltage scaling, and US8 package thermal resistance (250 °C/W) for compact board layouts.

Technical Context

The NL37WZ06USG implements three independent CMOS inverters with open-drain outputs, enabling bidirectional signal translation without internal pull-ups. Its IOFF circuitry isolates inputs/outputs when VCC = 0 V, preventing back-powering in partial power-down systems.

All inputs tolerate up to 5.5 V regardless of VCC level (1.65–5.5 V), and output leakage remains ≤±0.5 µA in 3-state mode. Propagation delays scale predictably with supply voltage: 4.4 ns max at 5.5 V, 6.0 ns max at 1.95 V.

Key Specifications

Pinout & Package

Supplied in the US8 surface-mount package (Case 493), an 8-pin, 2.1 mm × 2.0 mm body with 0.5 mm lead pitch and exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple inverter with open-drain applications.

Compared with SN74LVC3GU04DCTR and MC74VHC1GT04DTT1G, the NL37WZ06USG uniquely combines triple-channel open-drain outputs, 5.5 V input tolerance, and IOFF in a single US8 package-enabling compact, robust level translation without design compromises.

Availability

NL37WZ06USG is available at Aetrix Electronics and suitable for I²C bus translation, GPIO signal conditioning, and mixed-voltage enable control requiring stable component supply across automotive, industrial, and embedded computing programs.

Supply support for NL37WZ06USG 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

onsemi (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The NL37WZ06USG belongs to onsemi's TinyLogic® W-series ultra-high-speed logic family, engineered for low-voltage, low-power, and mixed-signal interface applications where timing precision and voltage domain bridging are critical.

FAQ

What is the maximum operating temperature for the NL37WZ06USG?

The NL37WZ06USG is rated for operation from −55 °C to +125 °C ambient temperature. This extended range supports deployment in under-hood automotive modules, industrial motor drives, and outdoor telecom equipment where thermal stress is significant. The device maintains specified propagation delay and output drive performance across this full range, as validated in the Recommended Operating Conditions table of the official datasheet.

Does the NL37WZ06USG require external pull-up resistors on its outputs?

Yes, the NL37WZ06USG requires external pull-up resistors on all Y1, Y2, and Y3 outputs because they are open-drain. Without pull-ups, outputs cannot assert a logic high state. Typical values range from 1.8 kΩ (for 5 V I²C at 400 kHz) to 10 kΩ (for slower GPIO applications), selected based on bus capacitance, speed requirements, and VCC level. The NL37WZ06USG itself does not integrate pull-up circuitry.

Can the NL37WZ06USG be used with a 1.8 V supply?

Yes, the NL37WZ06USG operates reliably at 1.8 V, as confirmed by its 1.65 V minimum VCC rating. At 1.8 V, propagation delay increases to ≤9.5 ns (max), and output sink current drops to ~12 mA (typical), but all logic thresholds and input tolerance remain functional. This makes the NL37WZ06USG suitable for modern ultra-low-power microcontrollers and wearables where 1.8 V core logic is standard.

Is the NL37WZ06USG RoHS compliant and halogen-free?

Yes, the NL37WZ06USG is RoHS compliant, Pb-free, and halogen-free/BFR-free, as explicitly stated in the Features section of the official onsemi datasheet. The "G" suffix in NL37WZ06USG denotes the Pb-free package variant, and the device meets JEDEC J-STD-609 Class 1 moisture sensitivity level with UL 94 V-0 flammability rating.

How does the IOFF feature function in the NL37WZ06USG during power-down?

When VCC = 0 V, the IOFF circuitry in the NL37WZ06USG disables conduction paths between inputs (A1–A3) and outputs (Y1–Y3), limiting leakage current to ≤10 µA. This prevents back-powering of the unpowered IC from externally driven signals-critical in hot-swap systems or multi-rail boards where one section powers down while others remain active. The NL37WZ06USG maintains this protection across the full −55 °C to +125 °C temperature range.