Texas Instruments TXS0206YFPR

Overview

TXS0206YFPR from Texas Instruments is a bidirectional voltage-level translation transceiver designed for MMC/SD/Memory Stick™ card interfaces. It supports independent 1.1 V–3.6 V supplies on A- and B-ports, delivers ≤4 ns propagation delay (1.8 V ↔ 3 V), integrates ±8-kV IEC 61000-4-2 ESD protection on the card side, and operates in mobile phone and digital camera memory card slots.

For engineers reviewing the TXS0206YFPR datasheet, TXS0206YFPR pinout, TXS0206YFPR application, or TXS0206YFPR equivalent, key selection criteria include dual-supply level-shifting capability, integrated EMI filtering, WCSP package footprint constraints, and SDIO timing compliance up to 60 MHz.

Technical Context

The TXS0206YFPR implements a passive, resistor-based level-shifting architecture with dynamic pull-up resistors (4 kΩ high-state / 40 kΩ low-state) and integrated ASIP (Active Signal Integrity Protection) circuitry. It features separate enable-controlled Hi-Z states per port and includes dedicated CLK feedback (CLK-f) for host resynchronization.

Its terminal mapping supports full SD/SDIO 4-bit data bus (DAT0–DAT3), CMD, CLK, CD, and WP signals across two voltage domains. The device uses open-drain and push-pull compatible I/O structures, with internal 100-kΩ pull-ups on CD and WP pins referenced to VCCA.

Key Specifications

Pinout & Package

TXS0206YFPR is housed in a 20-bump wafer chip scale package (WCSP) with YFP designation, measuring 1.96 mm × 1.56 mm and featuring 0.4-mm ball pitch. The package is Pb-free and optimized for fine-pitch routing in mobile applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXB0106PWR and SN74AVC4T245PW, the TXS0206YFPR uniquely combines auto-sensing bidirectional translation, integrated ±8-kV IEC ESD, and CLK-f feedback-making it the only single-chip solution qualified for direct SD/SDIO/Memory Stick™ card slot integration without supplemental protection circuitry.

Availability

TXS0206YFPR is available at Aetrix Electronics and suitable for smartphone memory interfaces, digital camera SD slots, and portable media player SDIO peripherals requiring stable component supply and long-term lifecycle support.

Supply support for TXS0206YFPR 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 company specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation history.

The TXS0206YFPR belongs to TI's voltage translation and interface solutions product line, engineered specifically for high-reliability, space-constrained memory card interfacing in portable consumer electronics.

FAQ

What is the maximum supported clock frequency for TXS0206YFPR in SD High-Speed mode?

The TXS0206YFPR supports up to 60 MHz clock frequency in push-pull driving mode across all VCCA/VCCB combinations, satisfying SD High-Speed mode (up to 50 MHz) and Memory Stick PRO-HG timing requirements. Measured tpd remains ≤12.5 ns at 3.3-V VCCA and 3.3-V VCCB, preserving setup/hold margins.

Does TXS0206YFPR require external pull-up resistors on DAT/CMD lines?

No, TXS0206YFPR includes internal 40-kΩ pull-up resistors on all DATx and CMD I/Os (both A- and B-ports), eliminating the need for external pull-ups. Its dynamic pull-up design switches to 4-kΩ during high-state transmission to ensure adequate VIH margin for Memory Stick™ cards.

How does the EN pin affect TXS0206YFPR operation during SD card hot-plug events?

When EN is pulled low, TXS0206YFPR places all A- and B-port I/Os in high-impedance state within ≤68 ns (B-port) or ≤62 ns (A-port), preventing signal contention during card insertion/removal. This enables clean hot-plug detection and avoids bus lock-up in portable systems.

Can TXS0206YFPR be used with eMMC instead of SD cards?

Yes, TXS0206YFPR is compatible with eMMC v4.4+ and later, supporting its 1.8-V/2.9-V dual-voltage operation and 4-bit data bus. Its 60-Mbps data rate and <4-ns propagation delay meet eMMC HS200 timing requirements when VCCA = 1.8 V and VCCB = 2.9 V.

What is the significance of the CLK-f pin on TXS0206YFPR?

The CLK-f pin provides a buffered, phase-aligned copy of CLKB back to the host processor, enabling precise resynchronization of returned data in DDR SDIO modes. Unlike standard clock outputs, CLK-f compensates for internal propagation delay, reducing timing skew between data and clock sampling edges in high-speed transfers.