NXP Semiconductors GTL2003PW,112

Overview

GTL2003PW from NXP Semiconductors is an 8-bit bidirectional NMOS pass-transistor voltage translator IC enabling seamless level shifting between 0.8 V and 5.0 V logic domains without direction control. It features 6.5 Ω typical ON-state resistance, <5.5 ns propagation delay, and operates across −40 °C to +85 °C. It is used in I²C-bus interface translation between low-voltage processors (e.g., 0.8–1.8 V) and 3.3 V/5.0 V peripherals.

For engineers reviewing the GTL2003PW datasheet, GTL2003PW pinout, GTL2003PW application, or GTL2003PW equivalent, this page delivers verified specifications, TSSOP20 package details, ESD-robust bidirectional clamping behavior, and real-world I²C and GTL/GTL+ translation use cases - all grounded in NXP's Rev. 2 product data sheet.

Technical Context

The GTL2003PW implements Gunning Transceiver Logic Transceiver Voltage Clamp (GTL-TVC) architecture using eight matched NMOS pass transistors plus a reference transistor (SREF/DREF/GREF). Its operation relies on gate biasing: GREF must be ≥1.5 V above SREF to establish precise clamping voltage (VT = VSREF) at the Sn ports during HIGH-to-LOW translation.

During LOW-to-HIGH translation, Dn ports are pulled up externally to VDD1 (3.3–5.5 V), while Sn-side pull-ups are omitted when VDD1 − VSREF ≥1.5 V. All eight Sn/Dn channels exhibit matched Ron, propagation delay, and output voltage limiting - eliminating inter-channel skew and enabling consistent timing across multi-bit buses.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): plastic thin shrink small outline, 20-lead, body width 4.4 mm, 0.65 mm pitch. Exposed pad not present - standard leaded thermal path.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GTL2003PW, PCA9306DP offers simplified I²C integration but lacks scalability beyond two lines, while TXS0108E provides broader voltage flexibility at the cost of increased Ron and added direction-sensing overhead - making GTL2003PW optimal for high-fidelity, low-skew, supply-free 8-bit GTL/I²C translation.

Availability

GTL2003PW is available at Aetrix Electronics and suitable for industrial embedded systems, processor I/O expansion, and high-speed memory interface applications requiring stable component supply and long-term lifecycle assurance.

Supply support for GTL2003PW 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications.

The GTL2003PW belongs to NXP's GTL-TVC family, engineered specifically for high-speed, supply-free bidirectional voltage translation in processor-centric systems where minimizing BOM count and preserving signal timing integrity are critical.

FAQ

Does GTL2003PW require a power supply to operate?

No, GTL2003PW is a passive NMOS clamp device with no internal power rails. It operates without VCC or VDD connections - only GND, SREF, DREF, GREF, and the Sn/Dn signal paths are needed. This eliminates power sequencing concerns and makes GTL2003PW inherently latch-up free, unlike active translators that depend on dual-supply biasing. The GTL2003PW achieves translation solely through controlled gate biasing and external pull-up resistors.

What is the minimum recommended voltage difference between GREF and SREF for reliable operation of GTL2003PW?

NXP specifies that GREF must be at least 1.5 V higher than SREF for optimal GTL2003PW translator performance. This ensures sufficient gate overdrive to fully enhance the NMOS pass transistors and maintain tight control over the clamping voltage VT = VSREF. Operating below this margin risks incomplete turn-on, elevated Ron, and inconsistent output voltage limiting - particularly critical in 0.8 V to 1.2 V core translation scenarios where margin is constrained.

Can GTL2003PW be used for unidirectional voltage translation, and how does configuration differ from bidirectional mode?

Yes, GTL2003PW supports both unidirectional and bidirectional modes. For unidirectional down-translation (e.g., 3.3 V → 1.2 V), GREF and DREF are pulled to VDD1, and SREF is set to the target low-voltage rail - no S-side pull-ups needed if VDD1 − VSREF ≥1.5 V. For up-translation (1.2 V → 3.3 V), the same reference setup applies, but a pull-up resistor on the Dn side is mandatory to achieve full HIGH-level output. GTL2003PW's flexibility eliminates need for separate dedicated up/down translators.

How does GTL2003PW handle ESD protection, and what standards does it meet?

GTL2003PW exceeds JESD22-A114 Human Body Model (HBM) with 2000 V rating and JESD22-C101 Charged Device Model (CDM) with 1000 V rating. Its robust ESD structure protects both low-voltage processor pins (Sn side) and higher-voltage peripheral interfaces (Dn side) from system-level discharge events. This allows GTL2003PW to serve as a first-line defense in I/O paths - reducing or eliminating need for external TVS diodes in many industrial and computing applications.

Is GTL2003PW pin-compatible with other members of the GTL200x family, such as GTL2002 or GTL2010?

No, GTL2003PW is not pin-compatible with GTL2002 (4-bit) or GTL2010 (10-bit). While all share the same GTL-TVC architecture and functional behavior, they differ in channel count and pin assignment: GTL2003PW uses TSSOP20 with S1–S8 on pins 3–10 and D1–D8 on pins 11–18, whereas GTL2002 uses 14-pin TSSOP and GTL2010 uses 24-pin TSSOP. Board layout must be specific to GTL2003PW; migration between variants requires PCB redesign.