NXP Semiconductors NTB0102JKZ

Overview

NTB0102JKZ from NXP Semiconductors is a 2-bit dual-supply auto-sensing bidirectional voltage-level translating transceiver with 3-state output control, enabling seamless interfacing between 1.2 V/1.5 V/1.8 V/2.5 V/3.3 V and 5.0 V domains. It features independent VCC(A) (1.2–3.6 V) and VCC(B) (1.65–5.5 V) supplies, IOFF-enabled partial power-down protection, and operates across –40 °C to +125 °C for industrial and automotive subsystems.

For engineers reviewing the NTB0102JKZ datasheet, NTB0102JKZ pinout, NTB0102JKZ application, or NTB0102JKZ equivalent, this device delivers verified auto-direction sensing, sub-10 ns propagation delay (A↔B), <1 μs enable/disable timing, and ESD robustness up to 15 kV HBM on B-port - critical for low-power mixed-voltage I/O bridging in space-constrained embedded designs.

Technical Context

The NTB0102JKZ implements edge-detecting one-shot circuitry per I/O channel to autonomously determine data flow direction without external control signals. Its weak-output architecture (70 Ω typical at 1.2–1.8 V, 50 Ω at 1.8–3.3 V, 40 Ω at 3.3–5.0 V) allows external drivers to override outputs during bus contention, ensuring safe bidirectional translation.

IOFF circuitry actively disables outputs when either VCC(A) or VCC(B) is at GND, blocking damaging backflow current during partial power-down. Input clamping and ±1 μA max leakage across –40 °C to +125 °C ensure reliable operation in thermally demanding environments without external biasing.

Key Specifications

Pinout & Package

X2SON8 package (SOT2015-1): 1.35 mm × 1.0 mm × 0.32 mm, no leads, 8-terminal ultra-thin profile optimized for high-density PCB layouts and automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXB0102RUGR and SN74AVC2T244RSWR, the NTB0102JKZ uniquely combines auto-direction sensing, IOFF-enabled power-down, and industry-leading ESD robustness in a 1.35 mm × 1.0 mm X2SON8 package - delivering lowest system-level component count and highest thermal resilience for automotive and industrial edge nodes.

Availability

NTB0102JKZ is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O expansion, wearable health monitors, and smart energy metering requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for NTB0102JKZ 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 mixed-signal interface ICs and automotive-grade reliability.

The NTB0102JKZ belongs to NXP's dual-supply level translator product line, engineered specifically for robust, low-power bidirectional voltage translation in thermally aggressive and electrically noisy environments such as engine compartments and factory floors.

FAQ

What is the maximum allowable voltage difference between VCC(A) and VCC(B) for reliable operation of NTB0102JKZ?

The NTB0102JKZ requires VCC(A) ≤ VCC(B) during active operation per datasheet Section 12.4. While VCC(A) may temporarily exceed VCC(B) during power-up without damage, sustained operation above this limit risks undefined behavior and potential latch-up. The absolute maximum ratings allow both supplies up to +6.5 V, but functional compliance mandates VCC(A) ≤ VCC(B) - e.g., 3.3 V on A-port and 5.0 V on B-port is valid; 5.0 V on A-port and 3.3 V on B-port is not.

Does NTB0102JKZ support true bidirectional communication without external direction control signals?

Yes, NTB0102JKZ implements autonomous auto-direction sensing using internal edge-detecting one-shot circuits that monitor rising/falling transitions on A1/A2 and B1/B2 pins. This eliminates the need for external direction-control lines or GPIO resources, enabling true plug-and-play bidirectional data flow - confirmed in Functional Description Section 6 and Architecture Section 12.2 of the datasheet.

Can NTB0102JKZ be used in I²C or 1-Wire bus applications?

No, NTB0102JKZ is explicitly not recommended for I²C or 1-Wire applications per Section 12.6 of the datasheet. Its weak-output drive strength (designed for capacitive loads ≤70 pF) and lack of open-drain compatibility require pull-up resistors >50 kΩ, which violate I²C timing specifications. For these protocols, NXP recommends the NTS0102-Q100 - a purpose-built open-drain translator.

What is the guaranteed minimum data rate supported by NTB0102JKZ across its full operating temperature range?

NTB0102JKZ guarantees ≥40 Mbps data rate from –40 °C to +125 °C (Table 11 and Table 12), with typical performance reaching 100 Mbps at 3.3 V ↔ 5.0 V translation. This is validated by pulse-width (tW ≥10 ns) and propagation delay (tpd ≤10.1 ns max) limits under worst-case voltage and temperature conditions - sufficient for UART, SPI, and basic sensor interface protocols.

How does the IOFF circuitry in NTB0102JKZ protect against back-current during partial power-down?

The IOFF circuitry in NTB0102JKZ actively disables all output drivers when either VCC(A) or VCC(B) falls to GND, preventing damaging backflow current through the device. As specified in Section 1.1 and Table 4, this feature ensures outputs enter high-impedance OFF-state even if one supply remains active - critical for modular systems where subsystems power up/down independently, such as automotive domain controllers.