NXP Semiconductors NVT2008PW,118

Overview

NVT2008PW,118 from NXP Semiconductors is an 8-bit bidirectional voltage-level translator IC for open-drain and push-pull applications, supporting Vref(A) from 1.0 V to 3.6 V and Vref(B) from 1.8 V to 5.5 V, with ≤1.5 ns max propagation delay, 3.5 Ω typical ON-state resistance, and 5 V-tolerant I/Os - used in I²C bus interfacing between 1.8 V microcontrollers and 3.3 V peripherals.

For engineers reviewing the NVT2008PW,118 datasheet, NVT2008PW,118 pinout, NVT2008PW,118 application, or NVT2008PW,118 equivalent, this page delivers verified electrical parameters, TSSOP20 package layout, ESD robustness (4 kV HBM), flow-through pinout routing guidance, and validated alternatives for mixed-voltage system design.

Technical Context

The NVT2008PW,118 implements a passive MOSFET-based clamping architecture without direction control logic: when An or Bn is LOW, the internal switch turns ON, establishing a low-Ron path; when HIGH, voltage translation is governed by Vref(A) and Vref(B) biasing, enabling seamless bidirectional signal flow across domains. EN is referenced to Vref(B) and must be ≥1 V above Vref(A) for reliable operation.

It supports transmission speeds <33 MHz under 50 pF load with 197 Ω pull-up, achieves lock-up free behavior via symmetrical fabrication, and provides high-impedance isolation when EN = LOW - critical for power sequencing in multi-rail systems like CPU-chipset interconnects.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1), body width 4.4 mm, 20-lead plastic thin shrink small outline package with flow-through pinout optimized for minimal PCB trace crossing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PCA9306DCUR and NVT2008BQZ, the NVT2008PW,118 uniquely combines 8-bit width, integrated EN control, flow-through TSSOP20 routing, and guaranteed ≤1.5 ns delay - making it optimal for compact, high-integration industrial controllers requiring full-bus translation and power-aware isolation.

Availability

NVT2008PW,118 is available at Aetrix Electronics and suitable for I²C bus translation, processor-chipset interfacing, SMBus communication, and legacy peripheral integration requiring stable component supply across industrial temperature ranges.

Supply support for NVT2008PW,118 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

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in interface and power management ICs.

The NVT2008PW,118 belongs to NXP's NVT family of passive bidirectional translators, designed specifically to replace discrete MOSFET solutions in mixed-voltage digital systems - emphasizing simplicity, reliability, and ESD-hardened interoperability.

FAQ

What is the minimum voltage difference required between Vref(A) and Vref(B) for reliable operation of the NVT2008PW,118?

The NVT2008PW,118 requires Vref(B) to be at least 1 V higher than Vref(A) for optimal clamping behavior and stable bidirectional translation. This ensures sufficient gate drive margin for the internal pass transistors. Operation below this differential may result in incomplete turn-on or increased propagation delay. The datasheet specifies Vref(B) ≥ Vref(A) + 1 V as a recommended condition - not an absolute limit, but a design guideline verified across −40 °C to +85 °C.

Can the NVT2008PW,118 be used with push-pull drivers on both sides, and what precautions apply?

Yes, the NVT2008PW,118 supports push-pull drivers on both A and B sides, but only if outputs are 3-stateable and directionally controlled to prevent HIGH-to-LOW contention. Unlike open-drain configurations, simultaneous active driving from both sides risks bus conflict. The NVT2008PW,118 itself does not resolve contention - it faithfully translates voltage levels. System-level direction control (e.g., via GPIO or protocol handshaking) remains mandatory for safe push-pull use.

Does the NVT2008PW,118 require external pull-up resistors, and how are their values determined?

Yes, external pull-up resistors are required on both A and B sides for open-drain operation - typically connected to Vpu(D) on the B side and VREFA on the A side. Resistor values depend on driver sink strength (3 mA, 10 mA, or 15 mA), bus capacitance, and target frequency. Tables 6–8 in the NVT2008PW,118 datasheet provide minimum Rpu values; actual selection must be ≥ those values to ensure VOL < 0.1 × VCC and accommodate ±5 % supply tolerance.

What is the role of the EN pin on the NVT2008PW,118, and how should it be connected?

The EN pin on the NVT2008PW,118 enables or disables the translation path: HIGH activates bidirectional conduction, LOW places all An/Bn pins in high-impedance state. It must be referenced to Vref(B) and pulled up to Vref(B) via a ≥200 kΩ resistor. During power-up/power-down, EN must be held LOW until both Vref(A) and Vref(B) are stable - ensuring no unintended signal coupling or latch-up risk.

Is the NVT2008PW,118 compatible with I²C Fast-mode Plus (1 Mbps) operation?

Yes, the NVT2008PW,118 supports I²C Fast-mode Plus (1 Mbps) under defined conditions: ≤50 pF total bus capacitance, appropriate pull-up sizing (e.g., 1.18 kΩ for 3.3 V B-side), and Vref(B) ≥ Vref(A) + 1 V. Its ≤1.5 ns propagation delay and low 3.5 Ω Ron minimize rise/fall time degradation. Real-world validation requires measuring actual tR/tF on the target board - the NVT2008PW,118 enables compliance but does not guarantee it without proper layout and termination.