Toshiba Semiconductor and Storage 7UL3G34FK,LF(B

Overview

7UL3G34FK from Toshiba Electronic Devices & Storage Corporation is a single-channel CMOS non-inverting buffer IC 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, achieves 2.9 ns typical propagation delay at 3.3 V/15 pF, and supports industrial temperature range (−40 °C to +125 °C).

For engineers reviewing the 7UL3G34FK datasheet, 7UL3G34FK pinout, 7UL3G34FK application, or 7UL3G34FK equivalent, this device is selected for ultra-low-voltage signal buffering where high-speed operation, 3.6 V tolerant inputs, and power-down protection are required in battery-powered IoT nodes, portable instrumentation, and automotive body control modules.

Technical Context

The 7UL3G34FK implements a single-stage CMOS non-inverting buffer with rail-to-rail input voltage tolerance up to 3.6 V independent of supply voltage. Its output stage features active power-down protection that isolates the output when VCC = 0 V, preventing back-driving on shared buses.

It supports multi-supply domain interfacing across 0.9 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V logic families. Propagation delay scales predictably with VCC and load capacitance-e.g., 2.9 ns (typ.) at 3.3 V/15 pF and 3.8 ns (typ.) at 3.0 V/30 pF-enabling timing-critical signal path design without external compensation.

Key Specifications

Pinout & Package

7UL3G34FK is housed in an ultra-small US8 (Ultra Small Outline Package, 8-pin) with 0.5 mm pitch and 2.1 mm × 2.0 mm footprint. The package is lead-free, RoHS-compliant, and weighs 0.01 g (typ.).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar non-inverting buffer applications.

Compared with TXU0102DQAR and SN74LVC1G07DBVR, the 7UL3G34FK uniquely supports 0.9 V operation, provides true push-pull drive down to sub-1 V, and guarantees output isolation during VCC=0 - making it the only option for ultra-low-voltage, single-channel, power-aware buffering in space-constrained designs.

Availability

7UL3G34FK is available at Aetrix Electronics and suitable for automotive body electronics, portable medical devices, industrial PLC I/O modules, and wireless edge node designs requiring stable component supply across extended temperature and ultra-low-voltage operating conditions.

Supply support for 7UL3G34FK 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 automotive, industrial, and consumer applications, with emphasis on low-power logic, power management, and memory solutions.

The 7UL3G34FK belongs to Toshiba's UL-series ultra-low-voltage logic family, engineered specifically for energy-efficient signal conditioning in battery-powered and thermally constrained embedded systems.

FAQ

What is the minimum supply voltage for reliable operation of the 7UL3G34FK?

The 7UL3G34FK is fully specified down to 0.9 V supply voltage, with guaranteed DC and AC performance including ±0.3 mA output drive and 20.7 ns max propagation delay at 0.9 V/10 pF. At this voltage, VIH remains VCC-dependent (≥0.7×VCC), ensuring robust noise margins in ultra-low-power systems where the 7UL3G34FK serves as a critical interface element.

Does the 7UL3G34FK support hot-swap or partial power-down scenarios?

Yes - the 7UL3G34FK features 3.6 V tolerant outputs with active power-down protection: when VCC = 0 V, the output enters high-impedance state with leakage current ≤ ±0.5 µA (max), preventing back-driving of powered-down buses. This behavior is explicitly verified across −40 °C to +125 °C and makes the 7UL3G34FK suitable for hot-plug I/O expansion cards and modular sensor nodes where the 7UL3G34FK manages signal isolation during power sequencing.

Can the 7UL3G34FK drive a 30 pF load while maintaining timing specifications?

Yes - at VCC = 3.0 V and CL = 30 pF, the 7UL3G34FK delivers 3.8 ns typical propagation delay (tPLH/tPHL), with maximum delay of 4.6 ns across −40 °C to +125 °C. This is confirmed in Section 9.6 of the official Toshiba datasheet, ensuring predictable timing for driving longer traces or multiple gate inputs without added buffers - a key advantage of the 7UL3G34FK in dense PCB layouts.

What is the purpose of the NC pins (5–8) on the 7UL3G34FK US8 package?

Pins 5 through 8 on the 7UL3G34FK are No Connect (NC) terminals - internally unconnected and electrically isolated. Toshiba specifies these pins may be left floating with no external tie to VCC or GND. Their presence accommodates package standardization across the UL-family; they do not affect thermal performance, EMI, or signal integrity, and their omission would not alter the 7UL3G34FK's functional behavior or reliability.

How does the 7UL3G34FK compare to standard LVC-series buffers in terms of input voltage tolerance?

Unlike standard 74LVC buffers (e.g., SN74LVC1G07), the 7UL3G34FK guarantees 3.6 V tolerant inputs regardless of VCC - meaning it accepts 3.3 V signals even when powered from 0.9 V. Standard LVC parts typically limit VIN to VCC + 0.3 V, requiring external clamping for mixed-voltage systems. This makes the 7UL3G34FK uniquely suited for voltage-agnostic signal routing where the 7UL3G34FK bridges disparate logic domains without additional components.