Diodes Incorporated 74LVC1G07W5-7

Overview

74LVC1G07W5-7 from Diodes Incorporated is a single CMOS buffer/driver IC with open-drain output, designed for voltage-level shifting and signal isolation in mixed-voltage digital systems. It operates from 1.65V to 5.5V, tolerates 5.5V inputs, supports IOFF partial power-down, and delivers up to 32mA sink current at 4.5V - enabling wired-AND logic and I²C bus pull-down in portable computing and peripheral interfaces.

For engineers reviewing the 74LVC1G07W5-7 datasheet, 74LVC1G07W5-7 pinout, 74LVC1G07W5-7 application, or 74LVC1G07W5-7 equivalent, key selection criteria include open-drain drive strength, 5.5V-tolerant input compatibility, IOFF leakage performance, and SOT25 package thermal resistance (θJA = 204°C/W) for space-constrained PCB layouts.

Technical Context

This device implements a non-inverting buffer with open-drain output topology, requiring an external pull-up resistor to define high-state voltage level. Its IOFF circuit actively disables output during power-down, limiting backflow current to ±10μA when VCC = 0V and VI/VO = 5.5V.

Input thresholds are voltage-ratio-based (e.g., VIH ≥ 0.65×VCC at 1.65–1.95V), ensuring reliable TTL- and CMOS-level interfacing across supply voltages. Propagation delay ranges from 0.5ns (min) to 8.5ns (max) over –40°C to +125°C, with tPD measured between A and Y under defined load conditions (RL = 1kΩ or 500Ω, CL = 30–50pF).

Key Specifications

Pinout & Package

SOT25 (5-pin small outline transistor) package with exposed pad not present; moisture sensitivity level 1 per J-STD-020; tin-plated leads solderable per MIL-STD-202 Method 208.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G07DBVR, the 74LVC1G07W5-7 offers lower cost and broader industry adoption, while 74AUP1G07GW,125 trades drive strength for sub-1μA static power - making the Diodes part optimal for balanced performance in mainstream consumer and industrial logic interfacing.

Availability

74LVC1G07W5-7 is available at Aetrix Electronics and suitable for PC power sequencing, I²C bus termination, and industrial sensor interface applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for 74LVC1G07W5-7 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 semiconductor company specializing in discrete, analog, and mixed-signal devices, with manufacturing certified to IATF 16949 and quality systems aligned to AEC-Q standards.

The 74LVC logic family targets general-purpose voltage translation and interface buffering in consumer, computing, and industrial equipment, emphasizing wide supply range, low power, and robust ESD tolerance.

FAQ

Can 74LVC1G07W5-7 be used as a level shifter between 1.8V and 5V logic?

Yes - its 5.5V-tolerant inputs accept 1.8V–5V signals regardless of VCC setting, and open-drain output can be pulled up to any voltage ≤5.5V. For 1.8V-to-5V translation, configure VCC = 1.8V and use a 5V pull-up on Y; input A sees 1.8V logic, output Y drives 5V bus lines safely.

What is the maximum recommended pull-up resistor value for Y when sinking 32mA?

At VCC = 4.5V and IOL = 32mA, VOL ≤ 0.55V per datasheet. To maintain VOL < 0.8V, maximum pull-up is RPU ≤ (VPU – 0.8V)/0.032A. With 5V pull-up, RPU ≤ 131Ω; practical values range 1kΩ–10kΩ for signal integrity, trading speed for lower power.

Does the NC pin require any PCB routing or grounding?

No - Pin 4 is internally unconnected. It may be left floating, grounded, or tied to VCC based solely on mechanical or thermal layout needs; no electrical function is affected. Diodes' package drawings confirm no internal bond wire to this terminal.

How does IOFF behavior protect downstream circuitry during power-down?

When VCC drops below ~0.8V, the IOFF circuit disables the output FET, limiting leakage to ±10μA even with 5.5V applied to A or Y. This prevents reverse current flow into a powered-down VCC rail, avoiding latch-up or unintended activation of connected devices like MOSFET gates or comparators.