Toshiba Semiconductor and Storage 7UL1G34FS,LF

Overview

7UL1G34FS from Toshiba Electronic Devices & Storage Corporation is a single-channel CMOS non-inverting buffer IC designed for low-voltage logic level translation and signal conditioning in space-constrained digital systems. It delivers ±8.0 mA output drive at VCC = 3.0 V, supports 0.9–3.6 V supply operation, features 3.6 V tolerant inputs, and achieves 2.5 ns typical propagation delay at 3.3 V with 15 pF load - enabling use in high-speed interface buffering for portable microcontrollers and sensor hubs.

For engineers reviewing the 7UL1G34FS datasheet, 7UL1G34FS pinout, 7UL1G34FS application, or 7UL1G34FS equivalent, this device is evaluated for ultra-low-power, wide-temperature-range signal buffering where rail-to-rail input compatibility, power-down protection, and sub-3 ns timing are critical selection criteria.

Technical Context

The 7UL1G34FS implements a single-stage CMOS push-pull output stage with input threshold scaling across VCC (VIH ≥ 0.65×VCC, VIL ≤ 0.35×VCC), ensuring robust noise immunity over its full 0.9–3.6 V operating range. Its 3.6 V tolerant input structure allows interfacing with higher-voltage logic without external level shifters.

It integrates power-down protection that disables output leakage when VCC = 0 V, and supports operation down to -40 °C and up to +125 °C - making it suitable for automotive under-hood and industrial control applications requiring extended thermal reliability.

Key Specifications

Pinout & Package

7UL1G34FS is housed in a 5-pin fSV package - Toshiba's ultra-thin, leadless, surface-mount package measuring 1.2 × 0.8 mm with 0.4 mm pitch and 1.0 mg typical weight. The package uses bottom-side terminals for compact PCB footprint and thermal efficiency.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G34DBVR and TC7SZ17FU,LF, the 7UL1G34FS uniquely supports 0.9 V operation and integrated power-down protection - making it the only option among the three for battery-powered systems requiring guaranteed isolation during brown-out conditions.

Availability

7UL1G34FS is available at Aetrix Electronics and suitable for industrial sensor interface, automotive body control module, portable medical wearable, and low-power IoT edge node applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q200-aligned reliability.

Supply support for 7UL1G34FS 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 7UL1G34FS belongs to Toshiba's UL-series ultra-low-voltage logic family, engineered specifically for battery-operated and thermally demanding embedded systems requiring rail-flexible signal conditioning without performance compromise.

FAQ

What is the minimum supply voltage at which 7UL1G34FS guarantees functional operation?

The 7UL1G34FS guarantees full DC and AC specifications down to 0.9 V supply voltage across the full -40 °C to +125 °C temperature range. At VCC = 0.9 V, it maintains VIH ≥ 0.65×VCC (≥0.585 V), VIL ≤ 0.35×VCC (≤0.315 V), and tPLH/tPHL ≤ 44.8 ns (max) at CL = 30 pF. This makes the 7UL1G34FS suitable for direct integration with sub-1 V energy-harvesting power supplies and ultra-low-power microcontrollers.

Does 7UL1G34FS support true 5 V-tolerant inputs?

No, the 7UL1G34FS specifies absolute maximum input voltage as -0.5 V to +4.6 V, with guaranteed 3.6 V tolerance under normal operating conditions. While it may survive brief 5 V transients, Toshiba does not characterize or guarantee operation above 3.6 V input. For 5 V-tolerant applications, the 7UL1G34FS must be paired with an external series resistor or clamping diode - or replaced with a part explicitly rated for 5 V inputs, such as the SN74LVC1G34.

Can the NC pin (Pin 5) of 7UL1G34FS be grounded or tied to VCC?

No - Pin 5 is designated No Connect (NC) and must remain electrically floating. Toshiba's datasheet explicitly states this terminal is internally unused and not bonded. Connecting Pin 5 to GND, VCC, or any other net may cause unpredictable behavior, increased leakage, or ESD susceptibility. PCB layout must omit solder paste and trace routing to Pin 5, treating it as a mechanical-only pad.

How does the power-down protection feature of 7UL1G34FS behave when VCC is ramping?

When VCC drops below 0.3 V, the 7UL1G34FS automatically disables its output stage and limits IOFF leakage to ≤1 µA (max) at Ta = 125 °C. During VCC ramp-up, the output remains in high-impedance state until VCC exceeds ~0.6 V, then transitions cleanly to active drive after internal power-on reset completes (~100 ns). This ensures no bus contention occurs during hot-plug or multi-rail sequencing - a key requirement verified in the 7UL1G34FS's automotive-grade qualification testing.

Is 7UL1G34FS pin-compatible with other Toshiba fSV-packaged logic devices?

Yes - the 7UL1G34FS shares the same 5-pin fSV footprint and pin assignment (A-GND-Y-VCC-NC) with Toshiba's TC7SZ17FU,LF and 7UL1G04FS,LF. All three devices are mechanically interchangeable on PCBs designed for the fSV package, allowing drop-in replacement for function-specific upgrades (e.g., inverter → buffer → non-inverter) without layout changes - provided voltage and drive requirements align.