Texas Instruments SN74GTL2010PWR

Overview

SN74GTL2010PWR from Texas Instruments is a 10-bit bidirectional low-voltage translator IC designed for voltage-level translation between 1 V and 5 V domains without direction control. It features ten matched NMOS pass transistors (S1–S10/D1–D10), 5-V-tolerant inputs, ≤5.5 ns propagation delay, and flow-through TSSOP-24 pinout. It enables I²C port translation between low-voltage processors and 3.3-V/5-V buses.

For engineers reviewing the SN74GTL2010PWR datasheet, SN74GTL2010PWR pinout, SN74GTL2010PWR application, or SN74GTL2010PWR equivalent, key selection criteria include ON-state resistance (7–105 Ω), bidirectional clamping architecture, reference transistor configuration (SREF/DREF/GREF), and compatibility with GTL/GTL+/LVTTL/TTL/CMOS logic families across mixed-voltage systems.

Technical Context

The SN74GTL2010PWR implements a passive NMOS clamp-based translation architecture using ten identical pass transistors and one dedicated reference transistor (SREF/DREF/GREF). Translation direction is determined dynamically by relative voltage levels on S and D ports, eliminating need for external direction control logic.

It operates in three modes: bidirectional (e.g., I²C), unidirectional down-translation (5 V → 1.8 V), and unidirectional up-translation (1.8 V → 5 V), each requiring specific biasing of GREF/DREF to higher-side V_CC and SREF to core supply (1 V to V_CC − 1.5 V). Propagation delay is load-dependent (≤5.5 ns at 30 pF) and governed by r_on–C_load time constant.

Key Specifications

Pinout & Package

TSSOP-24 package (PW), 7.8 mm × 4.4 mm × 1.2 mm max height, lead pitch 0.65 mm, RoHS-compliant NiPdAu finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74GTL2010PWR, SN74AVC16T245DGGR offers higher bandwidth but adds complexity and power dependency, while PCA9306DCUR simplifies I²C design at the cost of channel count and voltage-domain flexibility - SN74GTL2010PWR uniquely balances scalability, zero-power operation, and protocol-agnostic bidirectionality.

Availability

SN74GTL2010PWR is available at Aetrix Electronics and suitable for industrial automation interfaces, embedded processor I/O expansion, and mixed-voltage backplane interconnects requiring stable component supply and long-term lifecycle continuity.

Supply support for SN74GTL2010PWR 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with over 50 years of innovation in high-reliability interface solutions.

The GTL2010 product line was engineered specifically for robust, zero-power bidirectional voltage translation in legacy-to-modern system integration - targeting applications where direction control overhead, power budget, or PCB real estate are critical constraints.

FAQ

What is the minimum operating voltage for SN74GTL2010PWR on the S-side and D-side?

The SN74GTL2010PWR supports voltage translation from any level between 1 V and 5.5 V on both Sn and Dn ports. The SREF voltage must be set between 1 V and (V_DREF − 1.5 V) for reliable operation; typical configurations use SREF = 1.2 V or 1.8 V with DREF = 3.3 V or 5 V. No external V_CC is required - the device draws power solely from signal rails.

Does SN74GTL2010PWR require external pullup resistors, and if so, how are they sized?

Yes - SN74GTL2010PWR requires external pullup resistors on both S and D sides when used in unidirectional up-translation or bidirectional mode. For 15 mA pass current (to maintain VOL ≤ 350 mV), a 200-kΩ resistor is recommended between DREF and higher-side V_CC; Table 1 in the datasheet provides exact values based on V_DREF and target current (e.g., 310 Ω at 5 V/15 mA). Resistors must tolerate full rail voltage and meet +10% tolerance margin.

Can SN74GTL2010PWR be used for I²C bus translation, and what design considerations apply?

Yes - SN74GTL2010PWR is explicitly validated for I²C/SMBus translation per TI application note SCDS221. Key considerations include tying GREF to DREF and pulling both to higher-side V_CC, connecting SREF to processor core voltage (e.g., 1.8 V), and using open-drain topology on both sides. No direction control is needed, and propagation delay (≤5.5 ns) ensures compatibility with standard-mode (100 kHz) and fast-mode (400 kHz) I²C timing budgets.

How does SN74GTL2010PWR handle hot insertion, and what makes it latch-up immune?

SN74GTL2010PWR achieves hot-insertion capability and latch-up immunity through its passive NMOS architecture and absence of internal power rails. Since it requires no V_CC connection and draws current only when signal transitions occur, it cannot enter parasitic SCR conduction paths. Absolute maximum ratings permit −0.5 V to 7 V on all pins, and ESD protection (2000-V HBM) further enhances robustness during live-board connection.

What is the role of the reference transistor (SREF/DREF/GREF) in SN74GTL2010PWR operation?

The reference transistor (SREF/DREF/GREF) establishes the clamping threshold that defines maximum HIGH output voltage on the S-side. When Dn is HIGH and Sn is LOW, the pass transistor conducts; when Sn begins rising, its voltage is clamped to SREF level. GREF must be ≥1.5 V above SREF to ensure full enhancement - this relationship governs translation accuracy and VOL performance across all ten channels of SN74GTL2010PWR.