Diodes Incorporated 74LVC1G06Z-7

Overview

74LVC1G06Z-7 from Diodes Incorporated is a single inverter buffer/driver 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 partial power-down via IOFF, and delivers up to 32mA sink current at 4.5V - enabling wired-AND logic in I²C, SMBus, and reset signaling applications.

For engineers reviewing the 74LVC1G06Z-7 datasheet, 74LVC1G06Z-7 pinout, 74LVC1G06Z-7 application, or 74LVC1G06Z-7 equivalent, key selection criteria include open-drain drive strength, 5.5V-tolerant input compatibility, IOFF-enabled power-down isolation, and SOT553 footprint constraints for space-constrained PCBs.

Technical Context

This device implements a single CMOS inverter stage with an unbuffered open-drain N-channel MOSFET output, requiring an external pull-up resistor to define high-level logic states. Its IOFF circuit actively disables output leakage during VCC = 0V, preventing back-current flow in partial-power-down systems.

Input thresholds are VIL ≤ 0.3×VCC (at VCC ≥ 4.5V) and VIH ≥ 0.7×VCC, ensuring reliable TTL- and CMOS-compatible switching across its full 1.65–5.5V supply range. Propagation delay is 0.5–4.0ns (typ.) depending on VCC and load, with 3.3V operation delivering tPD = 2.3ns (typ.) into 50pF.

Key Specifications

Pinout & Package

SOT553 package: 1.6mm × 1.6mm × 0.62mm body, 0.5mm lead pitch, 5-pin configuration with exposed pad (non-electrical).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G06DBVR and 74LVC1G06FS3-7, the 74LVC1G06Z-7 balances minimal footprint (2.56mm²), proven manufacturability in SOT553, and full 32mA drive - making it optimal for cost-sensitive, space-constrained consumer electronics where thermal load is intermittent.

Availability

74LVC1G06Z-7 is available at Aetrix Electronics and suitable for I²C level shifting, microcontroller reset isolation, and USB ID detection requiring stable component supply across high-mix production runs.

Supply support for 74LVC1G06Z-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 manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.

The 74LVC logic family targets low-voltage, high-speed digital interfacing in portable, industrial, and communications equipment - emphasizing voltage flexibility, power-down safety, and small-form-factor integration.

FAQ

What is the maximum allowable pull-up resistor value for 74LVC1G06Z-7 when sinking 32mA at 4.5V?

The absolute maximum sink current of 32mA occurs at VCC = 4.5V with VOL ≤ 0.55V. Using Ohm's Law, R_PULLUP ≤ (4.5V − 0.55V) / 0.032A = 123Ω. For reliable operation with margin, 100Ω is the practical upper limit - confirmed by Diodes' DS32272 Rev. 11-2 Figure 1 load conditions.

Can 74LVC1G06Z-7 be used without a pull-up resistor on the Y output?

No. As an open-drain device, the Y pin has no active high-side driver. Without an external pull-up, the output remains floating in the HIGH state, causing undefined logic levels and potential EMI or latch-up in downstream CMOS inputs. A pull-up resistor (typically 1kΩ–10kΩ) to VCC or another rail is mandatory.

Does the NC pin on 74LVC1G06Z-7 require PCB connection or thermal treatment?

No. Pin 3 (NC) is internally unconnected. Diodes' datasheet specifies no electrical function or thermal requirement. It may be left unconnected, tied to GND for mechanical reinforcement, or omitted from the solder paste stencil - none affect electrical performance or reliability.

How does IOFF functionality behave when VCC = 0V but input A is held at 5.5V?

Per DS32272 Section 6.2, IOFF activates when VCC is below ~0.8V, disabling the output FET and limiting leakage to ±200μA max. With A = 5.5V and VCC = 0V, no significant current flows into the chip - protecting downstream circuitry from backfeed, as verified by JESD78 latch-up testing (>100mA).