Toshiba Semiconductor and Storage 7UL1G126FS,LF

Overview

7UL1G126FS from Toshiba Electronic Devices & Storage Corporation is a single-channel CMOS bus buffer with 3-state output, designed for low-voltage logic interfacing in space-constrained embedded systems. It operates from 0.9 V to 3.6 V, delivers ±8.0 mA output drive at 3.0 V, and achieves 2.5 ns typical propagation delay at 3.3 V/15 pF - enabling high-speed data routing in portable IoT sensors and battery-powered microcontroller peripherals.

For engineers reviewing the 7UL1G126FS datasheet, 7UL1G126FS pinout, 7UL1G126FS application, or 7UL1G126FS equivalent, this page provides verified electrical specifications, thermal operating limits (–40°C to +125°C), 3-state control timing, input tolerance (3.6 V), and power-down protection - all critical for signal integrity validation and voltage-level translation in mixed-supply designs.

Technical Context

The 7UL1G126FS implements a single non-inverting buffer with active-low 3-state enable (G), supporting bidirectional bus isolation in low-power digital systems. Its input structure tolerates up to 3.6 V regardless of VCC, and its output remains high-impedance during power-down (VCC = 0 V) with 3.6 V protection.

AC performance is characterized across five VCC ranges (0.9 V to 3.6 V) and three load conditions (1 MΩ, 100 kΩ, 5 kΩ), with propagation delay (tPLH/tPHL), output enable (tPZL/tPZH), and disable (tPLZ/tPHZ) times specified down to –40°C and up to +125°C - confirming robust operation in automotive under-hood and industrial edge nodes.

Key Specifications

Pinout & Package

7UL1G126FS uses the fSV package: ultra-thin 5-pin SOT-353 (SC-88A) with 0.65 mm pitch, 1.6 × 1.6 mm footprint, and 1.0 mg typical weight - optimized for high-density PCB layouts in wearables and compact modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus buffer applications.

Compared with SN74LVC1G126DBVR and 74LVC1G125GW,125, the 7UL1G126FS uniquely combines 0.9 V minimum VCC, guaranteed 3.6 V input tolerance across all supply voltages, and power-down output protection - making it optimal for ultra-low-voltage, mixed-supply, and fail-safe bus isolation where voltage domain boundaries are tight and fault resilience is critical.

Availability

7UL1G126FS is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable device power management, automotive cabin controls, and medical wearable data hubs requiring stable component supply across extended temperature and low-voltage operation.

Supply support for 7UL1G126FS 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 high-reliability semiconductor solutions for industrial, automotive, and consumer applications, with expertise in low-power logic, power management, and memory technologies.

The 7UL1G126FS belongs to Toshiba's UL-series ultra-low-voltage logic family, engineered specifically for energy-efficient signal routing in battery-operated and thermally constrained systems where voltage scalability and robustness across supply variations are essential.

FAQ

What is the minimum supply voltage for reliable operation of the 7UL1G126FS?

The 7UL1G126FS is fully specified down to 0.9 V VCC across all operating temperatures (–40°C to +125°C). At this voltage, DC parameters including VIH/VIL thresholds, output drive (±0.02 mA min), and propagation delay (up to 44.8 ns max) remain guaranteed per datasheet Table 9.6. This enables direct integration with sub-1 V power rails in advanced-node MCUs and energy-harvesting systems.

Does the 7UL1G126FS support 3.3 V logic inputs when powered from 1.2 V?

Yes. The 7UL1G126FS features 3.6 V tolerant inputs - meaning VIN may safely reach 3.6 V regardless of VCC value, including at 1.2 V. This is confirmed in Section 2(5) and Absolute Maximum Ratings (VIN = –0.5 to +4.6 V). No external clamping or level-shifting is required, simplifying interface design between disparate voltage domains.

What happens to the output of the 7UL1G126FS when VCC = 0 V?

When VCC = 0 V, the 7UL1G126FS output enters a protected high-impedance state with 3.6 V tolerance (Section 2(6)). This prevents back-driving of the output node and avoids latch-up or damage during partial power-down scenarios - a key requirement in hot-swap and battery-backed systems where supply sequencing is uncontrolled.

Is the 7UL1G126FS pin-compatible with other single-buffer devices in the same package?

The 7UL1G126FS uses the fSV (SOT-353) 5-pin package with standard pinout: Pin 1 = A (input), Pin 2 = G (active-low enable), Pin 3 = GND, Pin 4 = Y (output), Pin 5 = VCC. It is pin-compatible with 74LVC1G125GW (active-high enable) and 7UL1G125FS (active-high variant), enabling layout reuse when enable polarity is adjusted in firmware or logic.

How does the 7UL1G126FS perform at elevated temperature (125°C)?

At Ta = –40°C to +125°C, the 7UL1G126FS maintains full functionality: propagation delay remains ≤47.7 ns (max) at 3.0–3.6 V/15 pF, output drive stays ≥±0.3 mA (min), and quiescent ICC is ≤80 µA (max). These values are explicitly guaranteed in Section 9.6, confirming suitability for under-hood automotive and industrial edge computing environments.