Diodes Incorporated 74LVC3G07SS8-7

Overview

74LVC3G07SS8-7 from Diodes Incorporated is a triple non-inverting buffer IC with open-drain outputs, designed for voltage-level shifting and signal isolation in mixed-voltage systems. It operates from 1.65V to 5.5V, tolerates 5.5V inputs, supports IOFF partial power-down mode, and delivers –24mA sink current at 3.3V. Used in notebook I/O expansion and peripheral interface control.

For engineers reviewing the 74LVC3G07SS8-7 datasheet, 74LVC3G07SS8-7 pinout, 74LVC3G07SS8-7 application, or 74LVC3G07SS8-7 equivalent, this page provides verified electrical parameters, VSSOP-8 package mapping, open-drain design implications, and direct substitution guidance for logic-level translation and power-gated signal routing.

Technical Context

The 74LVC3G07SS8-7 implements three independent positive-buffer functions (A → Y) with open-drain outputs requiring external pull-up resistors for HIGH-level assertion. Its IOFF circuit actively disables output terminals during power-down, preventing back-current flow when VCC = 0V.

Input voltage tolerance up to 5.5V enables interfacing with legacy 5V logic while powered from 1.65–3.3V rails. Propagation delay is 1.0–4.2ns (VCC = 1.8–3.3V, TA ≤ +85°C), and input capacitance is 3.5pF typical at 3.3V - critical for high-speed bus loading analysis.

Key Specifications

Pinout & Package

VSSOP-8 package: ultra-thin, 2.0mm × 3.4mm body, 0.5mm lead pitch, moisture sensitivity level 1, tin-plated leads per MIL-STD-202.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar open-drain buffer applications.

Compared with SN74LVC3G07DCUR and 74LVC3G07GW,125, the 74LVC3G07SS8-7 offers guaranteed IOFF performance, validated 5.5V input tolerance, and Diodes' VSSOP-8 mechanical consistency - making it optimal for industrial and portable designs demanding interoperability and power-state fidelity.

Availability

74LVC3G07SS8-7 is available at Aetrix Electronics and suitable for USB peripheral interface, embedded power sequencing, hard disk drive LED indication, and industrial sensor bus isolation requiring stable component supply and long-term lifecycle support.

Supply support for 74LVC3G07SS8-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in Taiwan, China, and Malaysia.

The 74LVC3G07SS8-7 belongs to Diodes' LVC logic family, engineered for low-voltage, mixed-signal interfacing in space-constrained portable and industrial electronics - emphasizing voltage translation, power-state resilience, and ESD-hardened reliability.

FAQ

Can the 74LVC3G07SS8-7 be used without external pull-up resistors?

No. Its outputs are open-drain and cannot source current. A pull-up resistor to a valid voltage rail (e.g., 3.3V or 5V) is mandatory to achieve a defined HIGH logic level. Typical values range from 1kΩ to 10kΩ depending on speed and capacitive load requirements.

What happens to the outputs when VCC is disconnected?

When VCC = 0V, the IOFF circuit activates, placing all three outputs (1Y, 2Y, 3Y) into high-impedance state with leakage ≤ ±10μA. This prevents current backflow from externally powered circuits (e.g., 5V buses) into the unpowered IC, protecting both the device and system.

Is the 74LVC3G07SS8-7 suitable for driving I²C bus lines?

Yes - its open-drain outputs, 5.5V-tolerant inputs, and sub-5ns propagation delay meet I²C standard-mode (100kHz) and fast-mode (400kHz) timing requirements. Ensure pull-up resistors match bus capacitance and voltage levels; no additional buffering is needed for typical node counts.

Does the 74LVC3G07SS8-7 support hot-swap operation?

Yes. The combination of IOFF protection, 5.5V input tolerance, and ±10μA off-state leakage enables safe insertion/removal in live backplanes or modular systems. However, external series resistors on inputs may be required to limit transient inrush current during plug-in events.