Texas Instruments SN74AUC1G07DCKRG4

Overview

SN74AUC1G07DCKRG4 from Texas Instruments is a single non-inverting buffer/driver with open-drain output, designed for 1.65-V to 1.95-V operation and 3.6-V I/O tolerant signaling. It delivers ±8-mA output drive at 1.8 V, achieves 2.5 ns max propagation delay (tpd), and supports partial power-down via Ioff. It is used in portable audio interfaces and SSD control logic where level-shifting and wired-OR bus interfacing are required.

For engineers reviewing the SN74AUC1G07DCKRG4 datasheet, SN74AUC1G07DCKRG4 pinout, SN74AUC1G07DCKRG4 application, or SN74AUC1G07DCKRG4 equivalent, key selection criteria include its sub-1-V operability, 10-µA max ICC, open-drain topology for bus arbitration, SC70-5 package footprint, and Ioff-enabled back-drive protection in mixed-voltage systems.

Technical Context

The SN74AUC1G07DCKRG4 implements a single-channel positive-logic buffer with open-drain output, enabling active-low wired-OR or active-high wired-AND configurations when connected to other open-drain devices. Its Ioff circuitry actively disables outputs during power-down, blocking reverse current flow up to ±10 µA at 2.7 V.

It operates across 0.8 V to 2.7 V VCC, with guaranteed performance from 1.65 V to 1.95 V. Input thresholds scale with VCC (VIH = 0.65×VCC, VIL = 0.35×VCC), and output low voltage is specified down to 0.45 V at 8 mA sink current and 1.65 V supply.

Key Specifications

Pinout & Package

SN74AUC1G07DCKRG4 uses the SC70-5 (DCK) package: 2.00 mm × 1.25 mm body, 0.65 mm pitch, 1.1 mm max height, 5-pin surface-mount configuration with pin 1 index marking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar buffer/driver applications.

Compared with SN74AUC1G07DCKRG4, SN74LVC1G07DCKR trades sub-1-V operation and higher drive for lower cost, while 74AUP1G07GW,125 prioritizes nanoamp ICC over speed - making SN74AUC1G07DCKRG4 optimal for balanced 1.8-V portable timing and bus control.

Availability

SN74AUC1G07DCKRG4 is available at Aetrix Electronics and suitable for SSD power sequencing, portable audio I²C expansion, embedded PC fan control, tablet system management, and solid-state storage applications requiring stable component supply and long-term industrial availability.

Supply support for SN74AUC1G07DCKRG4 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

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The SN74AUC1G07DCKRG4 belongs to TI's AUC Sub-1-V Little Logic family, engineered for high-speed, ultra-low-voltage signal buffering and level translation in space-constrained portable and storage systems.

FAQ

What is the minimum operating voltage for SN74AUC1G07DCKRG4?

The SN74AUC1G07DCKRG4 is fully operational down to 0.8 V VCC, with guaranteed specifications from 1.65 V to 1.95 V. This sub-1-V capability enables use in advanced low-power microcontroller I/O domains and energy-harvesting subsystems where traditional logic cannot function. The SN74AUC1G07DCKRG4 maintains valid logic thresholds and output drive even at 0.8 V, supporting next-generation ultra-low-power design requirements.

Does SN74AUC1G07DCKRG4 support I²C bus interfacing?

Yes, SN74AUC1G07DCKRG4 supports I²C-compatible bus interfacing through its open-drain output and 3.6-V I/O tolerance. When configured with an external pull-up resistor, it can extend SDA or SCL lines across voltage domains (e.g., 1.8-V SoC to 3.3-V sensor). Its 2.5 ns max tpd preserves timing margins up to 400 kHz Fast Mode, and Ioff prevents back-drive during sensor power cycling - critical for reliable SN74AUC1G07DCKRG4 deployment in I²C systems.

What is the purpose of the NC pin on SN74AUC1G07DCKRG4?

Pin 1 of SN74AUC1G07DCKRG4 is marked NC (No Connection) and has no internal bond wire or circuit connection. It is a mechanical placeholder for package symmetry and must not be tied to any voltage or signal. TI recommends leaving it unconnected or optionally grounding it for mechanical stability - but never driving it, as that could induce parasitic coupling. This NC pin does not affect SN74AUC1G07DCKRG4 functionality or timing behavior.

How does Ioff protect SN74AUC1G07DCKRG4 during partial power-down?

The Ioff circuitry in SN74AUC1G07DCKRG4 automatically disables all outputs and isolates input/output terminals when VCC = 0 V, limiting reverse current to ±10 µA maximum. This prevents damaging back-drive from live buses into a powered-down section - essential for hot-plug SSD modules or dynamic power gating in portable systems. Unlike passive isolation, Ioff is an active feature built into SN74AUC1G07DCKRG4's silicon, requiring no external components or control signals.

Can SN74AUC1G07DCKRG4 replace SN74AUC1G07DBVR in the same PCB layout?

No - SN74AUC1G07DCKRG4 (SC70-5) and SN74AUC1G07DBVR (SOT-23-5) have incompatible footprints: DCK measures 2.00 mm × 1.25 mm with 0.65 mm pitch, while DBV is 2.90 mm × 1.60 mm with 0.95 mm pitch. Though electrically identical, they require separate land patterns and stencil designs. Migration from DBVR to DCKRG4 demands PCB redesign but offers 45% smaller area - a key benefit for SN74AUC1G07DCKRG4 in ultra-compact portable layouts.