NXP Semiconductors NTS0102TLH

Overview

NTS0102TLH from NXP Semiconductors is a 2-bit dual-supply translating transceiver with auto-direction sensing and open-drain I/O, enabling bidirectional level translation between 1.65 V–3.6 V (VCC(A)) and 2.3 V–5.5 V (VCC(B)). It supports up to 50 Mbit/s data rate in push-pull mode, features IOFF partial power-down protection, and operates across –40 °C to +125 °C for I²C/SMBus voltage translation in mixed-voltage embedded systems.

For engineers reviewing the NTS0102TLH datasheet, NTS0102TLH pinout, NTS0102TLH application, or NTS0102TLH equivalent, this page delivers verified package mapping (SOT1052-2 XSON8), confirmed pin functions, real-world timing behavior (e.g., tPHL ≤ 7.3 ns at –40 °C to +125 °C), thermal derating guidance (7.8 mW/K above 118 °C), and drop-in replacement context versus NTS0102GD.

Technical Context

The NTS0102TLH implements a switch-type architecture using pass-gate transistors and output edge-rate accelerators-no external direction control signal required. Each channel includes internal 10 kΩ pull-up resistors (to respective VCC rails) and one-shot circuits that activate on input transitions crossing VCCI/2, delivering ~50–70 Ω dynamic drive during acceleration (~50 ns duration).

It enforces VCC(A) ≤ VCC(B) during steady-state operation but tolerates any power-up sequence. IOFF circuitry disables outputs and blocks backflow current when either supply is at GND, satisfying partial power-down requirements per JESD78B Class II latch-up (≥100 mA) and HBM ESD ratings (2.5 kV A-port, 8 kV B-port).

Key Specifications

Pinout & Package

NTS0102TLH uses the SOT1052-2 package: XSON8, no leads, 3 mm × 2 mm × 0.5 mm body, with center thermal pad (non-electrical, floating by design). Pin 1 index area located at top-left corner in transparent top view.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-supply translating transceiver applications.

Compared with NTS0102GD and TXS0102DSGR, NTS0102TLH provides identical functionality to GD with mechanical compatibility for drop-in replacement, while avoiding TXS0102DSGR's need for external pull-ups-reducing component count and improving reliability in space-constrained I²C/SMBus nodes.

Availability

NTS0102TLH is available at Aetrix Electronics and suitable for I²C bus translation, SMBus interface bridging, and GPIO voltage translation requiring stable component supply across automotive, industrial, and medical electronics programs.

Supply support for NTS0102TLH 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 company specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The NTS0102 product line delivers auto-direction-sensing voltage translators optimized for open-drain protocols like I²C and SMBus, addressing mixed-voltage system integration challenges in resource-constrained embedded designs.

FAQ

What is the package type and footprint compatibility of NTS0102TLH?

NTS0102TLH uses the SOT1052-2 package: an XSON8 variant measuring 3 mm × 2 mm × 0.5 mm with a non-electrical center thermal pad. It shares identical pinout and land pattern with NTS0102GD, enabling drop-in replacement on existing GD-layout PCBs-provided no conductive traces exist under the GD package's center area. The TL pad may be left floating or connected to GND for improved thermal dissipation in new designs.

Does NTS0102TLH require external pull-up resistors for I²C operation?

No. NTS0102TLH integrates 10 kΩ pull-up resistors on all A1/A2 and B1/B2 I/O pins-referenced to their respective VCC(A) and VCC(B) supplies. This eliminates the need for external pull-ups in standard I²C implementations, reducing BOM count and board area. When OE is driven LOW, these internal pull-ups are disabled, ensuring true high-impedance isolation.

What is the maximum allowable voltage difference between VCC(A) and VCC(B) for NTS0102TLH?

NTS0102TLH requires VCC(A) ≤ VCC(B) during normal operation to ensure correct pass-gate biasing and avoid forward-biasing internal junctions. While the absolute maximum rating allows both supplies up to +6.5 V independently, sustained operation with VCC(A) > VCC(B) risks malfunction or accelerated wear. Power-up sequencing is unrestricted-either supply may ramp first without damage.

How does the one-shot edge accelerator in NTS0102TLH improve timing performance?

The one-shot circuit in NTS0102TLH activates when an input crosses VCCI/2, temporarily enabling PMOS transistors (T1/T2) to bypass internal 10 kΩ pull-ups. This reduces effective output resistance to ~50–70 Ω for ~50 ns, cutting tTLH/tTHL by up to 40% versus passive translation. The result is reliable 50 Mbit/s operation with minimal external driver strength requirements-critical for maintaining I²C timing margins.

Can NTS0102TLH be used in place of NTS0102GD without PCB modifications?

Yes-NTS0102TLH is explicitly designated as the drop-in replacement for NTS0102GD per Discontinuation Notice 202111012DN. Both share identical pinout, electrical specifications, and thermal profile. The TL package adds a non-electrical center pad; if the GD layout has no traces beneath its center area, TL placement requires zero PCB changes. If traces exist, evaluate EMI/crosstalk risk-but silicon connectivity remains unchanged.