Texas Instruments TXS0104EDG4

Overview

TXS0104EDG4 from Texas Instruments is a 4-bit bidirectional voltage-level translator IC designed for open-drain and push-pull logic interfaces between mismatched voltage domains. It supports 1.65–3.6 V on the A port and 2.3–5.5 V on the B port (VCCA ≤ VCCB), delivers up to 24 Mbps in push-pull mode, and requires no direction-control signal. It enables level translation in mobile device I²C, GPIO, and UART interconnects.

For engineers reviewing the TXS0104EDG4 datasheet, TXS0104EDG4 pinout, TXS0104EDG4 application, or TXS0104EDG4 equivalent, this page provides verified pin functions, real-world timing performance across VCCA/VCCB combinations, ESD robustness data per JESD22 and IEC 61000-4-2, thermal metrics for DG4 package, and validated alternative parts for dual-supply logic bridging.

Technical Context

The TXS0104EDG4 uses an auto-direction-sensing architecture with passive MOSFET-based translation cells, eliminating external control lines. Its OE input is referenced solely to VCCA and places all I/Os in high-impedance state when low.

It operates across –40°C to +85°C with latch-up immunity >100 mA (JESD78 Class II) and supports independent power-supply ramping-no sequencing required between VCCA and VCCB.

Key Specifications

Pinout & Package

DG4 package: 14-pin SOIC (8.65 mm × 6 mm), with exposed thermal pad not present. Pin 1 = VCCA, Pin 14 = VCCB, Pin 7 = GND, Pin 8 = OE, Pins 2–5 = A1–A4, Pins 10–13 = B4–B1 (reversed order).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXS0104EDG4, TXB0104RGYR offers stronger drive but adds layout complexity via DIR, while SN74AVC4T245PW provides tri-state flexibility at the cost of lower ESD resilience-making TXS0104EDG4 optimal for compact, ESD-exposed, direction-agnostic interconnects.

Availability

TXS0104EDG4 is available at Aetrix Electronics and suitable for smartphone baseband interfacing, tablet sensor hub bridging, desktop USB-C PD controller links, and industrial HMI display interfaces requiring stable component supply and guaranteed long-term sourcing.

Supply support for TXS0104EDG4 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 solutions for industrial, automotive, and consumer markets.

The TXS0104E product line delivers auto-directional voltage translation for space-constrained portable electronics, targeting low-power, high-reliability logic bridging between heterogeneous voltage domains.

FAQ

What is the maximum allowable voltage difference between VCCA and VCCB for reliable operation of the TXS0104EDG4?

The TXS0104EDG4 requires VCCA ≤ VCCB at all times, with no minimum difference specified. The absolute maximum ratings allow VCCA as low as 1.65 V and VCCB as high as 5.5 V, meaning up to 3.85 V differential is permitted-e.g., 1.65 V on A port and 5.5 V on B port remains within specification. This enables translation from 1.8 V logic to 5 V peripherals without external biasing. TXS0104EDG4 maintains correct operation across this full range provided both supplies remain within their respective min/max limits.

Can the TXS0104EDG4 be used to translate I²C signals, and what design considerations apply?

Yes, the TXS0104EDG4 supports I²C translation in open-drain mode with up to 2 Mbps data rate. Critical design considerations include ensuring pull-up resistors are placed on both A and B sides (not shared), sizing them per bus capacitance and VCCB (e.g., 2.2 kΩ for 3.3 V), and verifying that the 2 Mbps limit accommodates clock stretching. TXS0104EDG4's automatic direction sensing eliminates need for external control, making it ideal for standard I²C topologies. Its ±15 kV HBM rating on B port also protects against ESD on externally connected I²C lines.

Does the TXS0104EDG4 require external pull-up resistors on the A or B ports?

Yes, TXS0104EDG4 requires external pull-up resistors on both A and B ports when used in open-drain configurations such as I²C. The device itself contains no internal pull-ups. Resistor values depend on bus speed, capacitance, and VCC levels-for example, 4.7 kΩ for 100 kHz I²C at 3.3 V. In push-pull mode (e.g., GPIO), pull-ups are optional and typically omitted unless high-impedance fail-safe behavior is needed. TXS0104EDG4's OE pin allows software-controlled disablement without external components.

How does the OE pin function on the TXS0104EDG4, and what is the recommended pull-down resistor value?

The OE pin on TXS0104EDG4 is an active-low enable referenced to VCCA. When OE is low, all A- and B-port I/Os enter high-impedance state. To ensure safe power-up behavior, TI recommends tying OE to GND through a pull-down resistor. Minimum value depends on the driver's sourcing capability; for typical microcontroller GPIO, 10 kΩ is sufficient. TXS0104EDG4's OE circuit draws <2 µA, so even 100 kΩ provides reliable assertion. No external capacitor is needed-OE responds within 200 ns (enable time) and 35 ns (disable time).

Is the DG4 package of the TXS0104EDG4 RoHS-compliant and lead-free?

Yes, the TXS0104EDG4 in DG4 (SOIC-14) package is RoHS-compliant and lead-free, meeting JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements. It is rated for peak reflow temperatures up to 260°C and qualifies for standard Pb-free soldering processes. Texas Instruments documentation confirms green (halogen-free) material composition and full compliance with EU RoHS Directive 2011/65/EU and China RoHS. TXS0104EDG4 carries no exemptions and is suitable for consumer and industrial applications requiring full environmental compliance.