NXP Semiconductors NTS0101GF,132

Overview

The NTS0101GF,132 from NXP Semiconductors is a 1-bit dual-supply auto-direction-sensing voltage-level translating transceiver with open-drain I/O, enabling bidirectional translation between 1.65–3.6 V (VCC(A)) and 2.3–5.5 V (VCC(B)) domains. It features six terminals, integrated 10 kΩ pull-up resistors on both A and B ports, IOFF partial power-down protection, and supports up to 50 Mbps data rate in push-pull mode. It is used in I²C/SMBus, UART, and GPIO interfacing between mixed-voltage subsystems.

For engineers reviewing the NTS0101GF,132 datasheet, NTS0101GF,132 pinout, NTS0101GF,132 application, or NTS0101GF,132 equivalent, this page delivers verified electrical parameters, thermal operating range (−40 °C to +125 °C), package-specific pin mapping for SOT891, ESD robustness (8 kV HBM on B port), and real-world interface guidance for open-drain bus translation without external direction control.

Technical Context

The NTS0101GF,132 implements a switch-type architecture using an N-channel pass-gate transistor (T3) biased ~1 V_TH above the lower supply rail, enabling passive bidirectional conduction. Its output edge-rate accelerator employs one-shot circuits that activate on input transitions crossing VCCI/2, temporarily bypassing internal 10 kΩ pull-ups with low-impedance PMOS drivers (50–70 Ω) to accelerate rising edges.

This architecture eliminates need for external direction control signals and supports automatic flow detection. The device enforces VCC(A) ≤ VCC(B) during 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 spec (>100 mA).

Key Specifications

Pinout & Package

XSON6 package (SOT891): plastic extremely thin small outline, no leads, 6-terminal, body size 1.0 mm × 1.0 mm × 0.5 mm, pin 1 indicator at lower-left corner below marking code "s1".

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXS0101DCKR and PCA9306DCUR, the NTS0101GF,132 uniquely combines auto-direction sensing, integrated pull-ups, IOFF protection, and XSON6 footprint - delivering lowest component count and highest reliability for single-bit I²C/SMBus translation in space-constrained automotive and industrial designs.

Availability

The NTS0101GF,132 is available at Aetrix Electronics and suitable for I²C bus expansion, UART bridging, GPIO domain isolation, and SMBus sensor interfacing requiring stable component supply across extended temperature environments.

Supply support for NTS0101GF,132 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The NTS0101GF,132 belongs to NXP's voltage translation product line, engineered specifically for robust, low-latency, open-drain bus interfacing in mixed-voltage embedded systems where space, power, and reliability are critical.

FAQ

What is the maximum allowable voltage difference between VCC(A) and VCC(B) for reliable operation of the NTS0101GF,132?

The NTS0101GF,132 requires VCC(A) ≤ VCC(B) during active operation. While VCC(A) may range from 1.65 V to 3.6 V and VCC(B) from 2.3 V to 5.5 V, the absolute maximum allowed difference is constrained by the condition that VCC(A) must not exceed VCC(B). For example, at VCC(B) = 2.3 V, VCC(A) must be ≤ 2.3 V; at VCC(B) = 5.5 V, VCC(A) may be up to 3.6 V. This ensures correct biasing of the internal pass-gate transistor and prevents forward conduction through parasitic junctions in the NTS0101GF,132.

Does the NTS0101GF,132 support true bidirectional communication on the same pin pair without external direction control?

Yes, the NTS0101GF,132 implements auto-direction sensing using an internal gate-bias circuit that dynamically detects signal flow direction on the A and B ports. No external DIR pin or control logic is required. When a LOW-to-HIGH transition occurs on one side, the device automatically enables conduction toward the opposite side while accelerating the rising edge via its one-shot circuit. This makes the NTS0101GF,132 ideal for I²C, SMBus, and other open-drain protocols where direction changes frequently and unpredictably.

Can the NTS0101GF,132 be used with push-pull drivers, or is it limited to open-drain interfaces?

The NTS0101GF,132 is optimized for open-drain applications like I²C and SMBus, but it can also interface with push-pull drivers. However, when driven by push-pull sources, the maximum data rate remains 50 Mbps only if the driver's output impedance is ≤50 Ω and edge rates comply with Δt/ΔV ≤ 10 ns/V. Push-pull use may increase dynamic ICC and requires careful layout to avoid signal reflections that could retrigger the one-shot circuit - the NTS0101GF,132 datasheet recommends short traces (<15 cm) and minimal load capacitance for such configurations.

What is the role of the OE pin on the NTS0101GF,132, and how should it be handled during power sequencing?

The OE (output enable) pin on the NTS0101GF,132 is active HIGH and referenced to VCC(A). When OE is LOW, both A and B ports enter high-impedance OFF-state, isolating the domains. To ensure safe power-up/power-down behavior, OE should be tied to GND via a pull-down resistor (e.g., 10 kΩ) so the device remains disabled until both VCC(A) and VCC(B) are stable. The NTS0101GF,132's IOFF circuitry provides additional protection if OE is left floating, but a defined OE state prevents unintended bus contention during supply ramping.

How does the internal 10 kΩ pull-up resistor on each port affect VOL and bus timing in I²C applications?

The internal 10 kΩ pull-up on the A port (to VCC(A)) and B port (to VCC(B)) directly sets the static VOL level under 1 mA sink current (≤0.4 V typical). In I²C applications, this value satisfies standard-mode (≤0.4 V) and fast-mode (≤0.4 V) VOL specifications. However, heavier bus capacitance or multiple devices may require external parallel pull-ups to meet rise-time requirements - the NTS0101GF,132's edge accelerator compensates for this by reducing tTLH, but total pull-up strength must still satisfy I²C bus timing equations for target clock frequency and capacitive load.