onsemi NL27WZ32USGH

Overview

NL27WZ32USGH from onsemi is a dual 2-input OR gate logic IC operating from 1.65 V to 5.5 V, delivering 2.5 ns typical propagation delay at 5 V, 24 mA balanced output drive, and over-voltage tolerant inputs compatible with both LVTTL and LVCMOS interfaces - used in level-shifting bus control and high-speed digital signal routing in portable industrial controllers.

For engineers reviewing the NL27WZ32USGH datasheet, pinout, applications, or equivalent options, key selection criteria include supply voltage range (1.65–5.5 V), output drive strength (±24 mA), input overvoltage tolerance (up to 7.0 V), static current (<10 µA), and US8 package compatibility with space-constrained PCB layouts.

Technical Context

The NL27WZ32USGH implements two independent CMOS OR gates in a single US8 package, with rail-to-rail input voltage tolerance up to 7.0 V regardless of VCC, enabling robust interfacing between mixed-voltage domains. Its design supports operation down to 1.65 V while maintaining full logic functionality and sub-3 ns propagation delay across the full supply range.

It features near-zero quiescent supply current (≤10 µA) and low input capacitance (2.5 pF), minimizing dynamic power consumption and capacitive loading on driving stages. The device meets JEDEC JESD78 latch-up immunity (>500 mA) and ESD ratings per HBM (>2000 V), supporting reliable deployment in noisy industrial environments.

Key Specifications

Pinout & Package

Package: US8 (8-pin ultra-small surface-mount, case 493-02, 2.0 × 2.3 mm footprint, 0.65 mm pitch).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 2-input OR gate applications.

Compared with NC7WZ32M5X and SN74LVC2G32DBVR, the NL27WZ32USGH uniquely supports 1.65–5.5 V operation with 7.0 V input tolerance and 24 mA drive in the same US8 footprint - making it the only option for compact, mixed-voltage, industrial-grade OR logic without external components.

Availability

NL27WZ32USGH is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, USB-C power delivery control logic, and portable medical sensor hubs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for NL27WZ32USGH 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and logic solutions for automotive, industrial, cloud, and medical markets.

The NL27WZ32USGH belongs to the NL27WZ logic family, designed specifically for high-speed, low-voltage, mixed-signal interface applications where small size, wide supply range, and robust input tolerance are essential.

FAQ

What is the maximum input voltage the NL27WZ32USGH can tolerate?

The NL27WZ32USGH supports DC input voltages from −0.5 V to +7.0 V, independent of VCC. This overvoltage tolerance allows safe connection to 5 V buses even when powered from 1.8 V or 2.5 V supplies - eliminating the need for external clamping diodes or level shifters in mixed-voltage systems. The NL27WZ32USGH maintains full logic functionality and ESD robustness across this range.

Does the NL27WZ32USGH support operation at 1.65 V supply?

Yes, the NL27WZ32USGH is fully specified for operation at 1.65 V VCC, with guaranteed propagation delay (≤10.5 ns), output drive (≥16 mA), and logic thresholds (VIH ≥ 0.75×VCC, VIL ≤ 0.3×VCC). It remains functional down to 1.5 V for data retention, making it suitable for ultra-low-power battery-backed applications where the NL27WZ32USGH operates reliably across the entire industrial temperature range (−40°C to +85°C).

Is the NL27WZ32USGH pin-compatible with the NC7WZ32?

Yes, the NL27WZ32USGH is a direct replacement for the NC7WZ32 in the US8 package, sharing identical pinout, logic function, and footprint. However, the NL27WZ32USGH extends VCC range to 5.5 V (vs. 3.6 V for NC7WZ32) and adds 7.0 V input tolerance - enabling broader system compatibility without PCB changes. The NL27WZ32USGH retains full drop-in usability where enhanced voltage range is not required.

What is the thermal resistance (θJA) of the NL27WZ32USGH in its US8 package?

The NL27WZ32USGH in the US8 package has a junction-to-ambient thermal resistance (θJA) of 250°C/W, measured on an FR4 board with minimum pad spacing, 10 mm × 1 inch, 2-ounce copper trace, and no airflow. This value supports continuous operation at up to 250 mW power dissipation at 85°C ambient, sufficient for typical logic-level switching in industrial and portable applications using the NL27WZ32USGH.

Can unused inputs on the NL27WZ32USGH be left floating?

No - unused inputs on the NL27WZ32USGH must never be left floating. Each input (A1, B1, A2, B2) must be tied to a defined logic level: either VCC via a pull-up resistor or GND via a pull-down resistor. Floating inputs may cause increased ICC, erratic output behavior, or excessive power consumption due to internal input stage instability. This requirement applies universally across all operating conditions for the NL27WZ32USGH.