Toshiba Semiconductor and Storage TC7SP3125TU,LF

Overview

TC7SP3125TU,LF from Toshiba Electronic Devices & Storage Corporation is a 1-bit dual-supply CMOS bus buffer designed for voltage-level translation between mismatched logic domains. It supports A-side supply voltages of 1.1–2.7 V (e.g., 1.2 V, 1.5 V, 1.8 V, 2.5 V) and B-side supply voltages of 1.65–3.6 V (e.g., 1.8 V, 2.5 V, 3.3 V), delivers propagation delay as low as 6.8 ns (VCCA = 2.5 V, VCCB = 3.3 V), features 3-state output control via OE, and operates across –40 °C to +85 °C in battery-powered portable electronics.

For engineers reviewing the TC7SP3125TU,LF datasheet, TC7SP3125TU,LF pinout, TC7SP3125TU,LF application, or TC7SP3125TU,LF equivalent, this device serves as a low-power, overvoltage-tolerant level shifter for mixed-voltage system interconnects-particularly where ultra-small footprint, high-speed bidirectional isolation, and power-down leakage control are critical selection criteria.

Technical Context

The TC7SP3125TU,LF implements a single-channel unidirectional level-shifting buffer with independent VCCA and VCCB rails. Its input stage accepts signals up to 3.6 V regardless of VCCA, enabling robust interfacing from higher-voltage buses into lower-voltage domains without external clamping.

It uses silicon-gate CMOS technology with integrated ESD protection on all pins and supports floating A-bus operation when OE = "H". The output driver delivers ±12 mA sink/source capability at VCCB = 3.0 V and maintains 3-state high-impedance isolation with < ±2.0 µA leakage under off-state conditions.

Key Specifications

Pinout & Package

TC7SP3125TU,LF is housed in the ultra-small UF6 package (1.6 mm × 1.6 mm × 0.55 mm, 7.0 mg), optimized for high-density portable applications. Pin assignment follows standard 6-pin configuration with exposed pad thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-supply level translation applications.

Compared with SN74AVC1T45DBVR and FXMA108MUTAG, the TC7SP3125TU,LF offers superior overvoltage tolerance (3.6 V on all pins), lowest package height (0.55 mm), and lowest static current in 3-state mode - making it optimal for space- and power-constrained unidirectional control links where robustness against supply sequencing faults is essential.

Availability

TC7SP3125TU,LF is available at Aetrix Electronics and suitable for mobile phone baseband interfaces, wearable sensor hubs, industrial PLC I/O modules, automotive infotainment subsystems, and battery-powered IoT edge nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TC7SP3125TU,LF 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

Toshiba Electronic Devices & Storage Corporation designs and manufactures high-reliability semiconductor components for industrial, automotive, and consumer applications, with expertise in CMOS process innovation and low-power interface solutions.

The TC7SP3125TU,LF belongs to Toshiba's TC7SP series of ultra-small, dual-supply level translators engineered specifically for voltage-domain bridging in portable and space-constrained embedded systems.

FAQ

What is the maximum allowable voltage on the A1 input pin of the TC7SP3125TU,LF when VCCA = 1.2 V?

The A1 input pin of the TC7SP3125TU,LF is rated for overvoltage tolerance up to 3.6 V regardless of VCCA setting. When VCCA = 1.2 V, A1 may safely accept input signals from 0 V to 3.6 V without damage or functional degradation - a key feature enabling robust interfacing with higher-voltage buses without external protection components.

Does the TC7SP3125TU,LF support bidirectional data translation?

No, the TC7SP3125TU,LF is a unidirectional buffer: signal flow is strictly from A1 (input) to B1 (output). It does not support automatic direction sensing or reverse translation. For bidirectional applications such as I²C, a dedicated bidirectional translator like the SN74AVC1T45DBVR is required instead of the TC7SP3125TU,LF.

What is the typical propagation delay of the TC7SP3125TU,LF under 1.8 V → 3.3 V translation conditions?

Under VCCA = 1.8 ± 0.15 V and VCCB = 3.3 ± 0.3 V, the TC7SP3125TU,LF exhibits a maximum propagation delay (tPLH/tPHL) of 7.8 ns. While the datasheet does not specify a typical value, design margins should assume the worst-case 7.8 ns for timing-critical paths such as high-speed SPI or UART interfaces using the TC7SP3125TU,LF.

Can the TC7SP3125TU,LF operate with VCCA = 1.1 V and VCCB = 1.65 V?

Yes, the TC7SP3125TU,LF is fully specified across VCCA = 1.1–2.7 V and VCCB = 1.65–3.6 V. At VCCA = 1.1 V and VCCB = 1.65 V, it supports level translation with tpd ≤ 30 ns (max), IOHB/IOLB ≥ 3 mA (min), and VIHA/VILA thresholds scaled to 0.65×/0.3× VCCA - making the TC7SP3125TU,LF viable for emerging ultra-low-voltage subsystems.

Is the UF6 package of the TC7SP3125TU,LF lead-free and RoHS-compliant?

Yes, the TC7SP3125TU,LF carries the ",LF" suffix indicating lead-free and RoHS-compliant construction. The UF6 package uses matte tin plating and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), with no exemptions required under EU RoHS Directive 2011/65/EU - confirmed in Toshiba's official product documentation for the TC7SP3125TU,LF.