Texas Instruments SN74LVC1G07DBVT

Overview

SN74LVC1G07DBVT from Texas Instruments is a single non-inverting buffer/driver with open-drain output, designed for 1.65V–5.5V V_CC operation. It delivers ±24mA drive at 3.3V, supports 5.5V-tolerant inputs/outputs, achieves 4.2ns max t_pd at 3.3V, and features I_off for live insertion-used in LED driving, wired-OR logic, and level translation in portable media players and SSDs.

For engineers reviewing the SN74LVC1G07DBVT datasheet, SN74LVC1G07DBVT pinout, SN74LVC1G07DBVT application, or SN74LVC1G07DBVT equivalent, key selection criteria include open-drain sink capability (32mA max), 5.5V input tolerance, I_off partial-power-down support, thermal resistance (R_θJA = 357.1°C/W), and SOT-23 (DBV) 5-pin package compatibility with standard PCB assembly.

Technical Context

The SN74LVC1G07DBVT implements a single CMOS buffer stage with an open-drain output structure, enabling active-low wired-OR and active-high wired-AND bus configurations. Its I_off circuitry disables outputs when V_CC = 0 V, preventing back-drive current and supporting hot-plug operation.

It operates across industrial temperature (–40°C to 125°C), accepts input voltages up to 5.5V regardless of V_CC, and maintains specified switching performance (t_pd ≤ 4.2ns at 3.3V) while consuming ≤10µA ICC. The device is not a logic gate with enable control-it functions as a transparent buffer with no internal inversion or gating logic beyond the open-drain output stage.

Key Specifications

Pinout & Package

SOT-23 (DBV) 5-pin plastic package: 2.9mm × 2.8mm body size, 2.9mm × 1.6mm footprint, 1.45mm max height, lead pitch 0.95mm. RoHS-compliant, NIPDAU/SN lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G07DBVR, the SN74LVC1G07DBVT offers identical functionality in a smaller reel format ideal for engineering samples and low-volume builds; versus 74LVC1G07GW,125, it provides better thermal performance and tighter propagation delay-making it preferable for timing-critical or thermally constrained applications.

Availability

SN74LVC1G07DBVT is available at Aetrix Electronics and suitable for LED driver interfaces, wired-OR bus termination, and level translation applications requiring stable component supply, consistent SOT-23 packaging, and guaranteed long-term industrial temperature support (–40°C to 125°C).

Supply support for SN74LVC1G07DBVT 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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in logic IC design and manufacturing reliability.

The SN74LVC1G07 belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-power, high-speed, mixed-voltage interfacing in portable, industrial, and computing systems-prioritizing voltage translation, I_off safety, and board-space efficiency.

FAQ

What is the maximum sink current specification for SN74LVC1G07DBVT, and under what conditions is it guaranteed?

The SN74LVC1G07DBVT guarantees a maximum sink current of 32mA when V_CC = 4.5V and ambient temperature is –40°C to 125°C. This rating appears in the Absolute Maximum Ratings table and is validated per JEDEC JESD78 Class II latch-up testing. Operation beyond 32mA risks exceeding absolute limits and may cause permanent damage to the SN74LVC1G07DBVT.

Does SN74LVC1G07DBVT support true bidirectional level translation, and how is it implemented?

The SN74LVC1G07DBVT supports unidirectional level translation only-its open-drain output can translate down (e.g., 5V input → 3.3V output via pull-up) or up (e.g., 1.8V input → 5V output via pull-up), but it cannot pass signals in reverse direction. True bidirectional translation requires separate devices or dedicated translators; the SN74LVC1G07DBVT does not contain internal direction control or dual-rail sensing.

Can SN74LVC1G07DBVT be used without a pull-up resistor on the Y output, and what happens if it is omitted?

No-SN74LVC1G07DBVT requires an external pull-up resistor on the Y output to establish a valid high logic level. Without it, the output remains floating when inactive (high-impedance state), causing undefined logic levels, noise susceptibility, and potential system malfunction. Typical values range from 1kΩ to 10kΩ depending on speed and load; omission violates the functional requirements of the SN74LVC1G07DBVT open-drain architecture.

What is the purpose of the NC pin (Pin 1) on SN74LVC1G07DBVT, and how should it be handled on the PCB?

Pin 1 of the SN74LVC1G07DBVT is a no-connect terminal with no internal bond wire or silicon connection. It must be left electrically unconnected-neither tied to V_CC, GND, nor routed to traces. While grounding or floating is acceptable per TI's guidance, best practice is to leave it unconnected and avoid solder mask openings or vias to prevent accidental shorts. Its presence aids mechanical stability in the SOT-23 package but has zero electrical function in the SN74LVC1G07DBVT.

How does the I_off feature of SN74LVC1G07DBVT protect circuits during partial power-down?

The I_off circuitry in the SN74LVC1G07DBVT actively disables both input and output buffers when V_CC = 0V, limiting leakage current to ±10µA. This prevents back-driving current from live inputs or outputs into a powered-down section-critical for hot-plug SSD modules or docking stations. Unlike passive isolation, I_off is an integrated, tested feature meeting JEDEC JESD78 requirements, ensuring robustness that discrete solutions cannot match for the SN74LVC1G07DBVT.