Toshiba Semiconductor and Storage TC7SZ34FU,LJ(CT

Overview

TC7SZ34FU,LJ(CT) from Toshiba Electronic Devices & Storage Corporation is a single-channel CMOS non-inverting buffer IC in USV (SOT-353) package, delivering ±24 mA output drive at VCC = 3.0 V, 2.4 ns propagation delay (typ.) at 5.0 V/50 pF, and operation across 1.65–5.5 V supply range. It serves as a level-shifting, noise-immune signal repeater in automotive body control modules requiring AEC-Q100 compliance.

For engineers reviewing the TC7SZ34FU,LJ(CT) datasheet, TC7SZ34FU,LJ(CT) pinout, TC7SZ34FU,LJ(CT) application, or TC7SZ34FU,LJ(CT) equivalent, key selection criteria include its -40 to 85 °C operating temperature (per J(CT suffix), 5.5 V tolerant inputs, power-down protection outputs, and high-speed logic interface capability in space-constrained automotive and industrial PCBs.

Technical Context

The TC7SZ34FU,LJ(CT) implements a single-stage CMOS push-pull output stage with rail-to-rail input voltage tolerance up to 5.5 V and guaranteed output drive strength of ±24 mA at 3.0 V. Its internal structure supports hot-swap safe operation via power-down protection, preventing back-drive current when VCC = 0 V.

It operates across three voltage domains: 1.65–1.95 V (LV), 2.3–3.6 V (mid-range), and 4.5–5.5 V (5 V TTL-compatible), with VIH/VIL thresholds scaling as VCC × 0.75 / VCC × 0.25 respectively. Propagation delay remains ≤4.5 ns (max) at 3.3 V/15 pF and ≤3.9 ns (max) at 5.0 V/50 pF under commercial temperature conditions.

Key Specifications

Pinout & Package

Package: USV (JEDEC SOT-353), 5-pin ultra-small surface-mount package (1.2 × 1.0 × 0.4 mm, 0.006 g), optimized for high-density automotive PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G07DBVR and 74AUP1G07GW,125, the TC7SZ34FU,LJ(CT) uniquely combines AEC-Q100 qualification, 5.5 V tolerance, push-pull drive, and sub-3 ns speed - making it the only drop-in solution for automotive signal integrity-critical buffer roles without layout or firmware changes.

Availability

TC7SZ34FU,LJ(CT) is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O expansion, HVAC control panels, and medical diagnostic instrument interfaces requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for TC7SZ34FU,LJ(CT) 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 AEC-Q100-qualified logic and power devices.

The TC7SZ34FU,LJ(CT) belongs to Toshiba's TC7SZ series of ultra-high-speed, low-voltage CMOS logic buffers - engineered specifically for space-constrained, thermally demanding automotive subsystems requiring robust signal integrity and wide supply flexibility.

FAQ

What is the maximum operating temperature range for the TC7SZ34FU,LJ(CT)?

The TC7SZ34FU,LJ(CT) is rated for -40 to +85 °C operation, as confirmed by the J(CT) suffix in its ordering code and documented in Section 8 of the official Toshiba datasheet. This range meets AEC-Q100 Grade 3 requirements and is validated for use in automotive cabin and under-dash environments where ambient temperatures remain below 85 °C. The TC7SZ34FU,LJ(CT) does not support the extended -40 to +125 °C range offered by non-J(CT) variants.

Does the TC7SZ34FU,LJ(CT) support 1.8 V logic interfacing?

Yes, the TC7SZ34FU,LJ(CT) fully supports 1.8 V operation: its minimum supply voltage is 1.65 V, and DC characteristics including VIH (≥1.35 V) and VOL (≤0.3 V) are specified at VCC = 1.8 ± 0.15 V. Input thresholds scale with VCC, ensuring reliable recognition of 1.8 V logic levels. The TC7SZ34FU,LJ(CT) maintains 4.4 ns (max) propagation delay at 1.8 V/15 pF, making it suitable for low-voltage microcontroller GPIO expansion.

Is the TC7SZ34FU,LJ(CT) pin-compatible with other SOT-353 logic buffers?

The TC7SZ34FU,LJ(CT) uses standard SOT-353 (USV) pinout: Pin 1 = Input, Pin 2 = GND, Pin 3 = Output, Pin 4 = VCC, Pin 5 = N/C. This matches JEDEC-standard pin assignments for single-gate logic in SOT-353, enabling mechanical compatibility with SN74LVC1G07DBVR and 74AUP1G07GW. However, electrical differences - especially push-pull vs. open-drain output and 5.5 V tolerance - require functional validation before substitution. The TC7SZ34FU,LJ(CT) is not a drop-in replacement without design review.

What is the meaning of "J(CT)" in the TC7SZ34FU,LJ(CT) part number?

The "J(CT)" suffix in TC7SZ34FU,LJ(CT) denotes two key specifications: (1) the J-grade temperature range (-40 to +85 °C), and (2) tape-and-reel packaging (CT = carrier tape). This distinguishes it from variants like TC7SZ34FU(TE85L,F) which offer -40 to +125 °C operation. The TC7SZ34FU,LJ(CT) is explicitly qualified to AEC-Q100 Rev. H under this temperature grade, and its reliability testing reflects the J(CT)-defined conditions.

Can the TC7SZ34FU,LJ(CT) drive a 50 pF capacitive load at 5 V with guaranteed timing?

Yes - the TC7SZ34FU,LJ(CT) guarantees tPLH/tPHL ≤ 3.9 ns (max) at VCC = 5.0 ± 0.5 V and CL = 50 pF, per Section 9.4 AC Characteristics. This specification is verified across -40 to +85 °C and ensures reliable operation in high-speed digital interfaces such as SPI clock buffering or FPGA configuration lines. The TC7SZ34FU,LJ(CT)'s ±24 mA drive strength ensures fast edge rates into 50 pF, minimizing rise/fall time degradation.