Texas Instruments SN74LV07ADBR

Overview

SN74LV07ADBR from Texas Instruments is a hex buffer/driver IC with open-drain outputs, designed for 2-V to 5.5-V V_CC operation. It performs Y = A logic in positive logic, supports mixed-mode voltage translation (e.g., 3.3-V input to 5-V output), delivers up to 16 mA sink current at 5 V, and features I_off for partial power-down protection. It is used in server bus interface circuits requiring level-shifting and wired-OR logic.

For engineers reviewing the SN74LV07ADBR datasheet, SN74LV07ADBR pinout, SN74LV07ADBR application, or SN74LV07ADBR equivalent, key selection criteria include open-drain drive capability, 5.5-V tolerant inputs/outputs, I_off behavior during power sequencing, and SSOP-14 package compatibility with high-density PCB layouts.

Technical Context

The SN74LV07ADBR implements six independent non-inverting buffers, each with an open-drain output stage enabling wired-OR connections and flexible pull-up voltage selection. Its I_off circuitry actively disables outputs when V_CC = 0 V, preventing back-current flow in powered-down subsystems.

Input thresholds scale with V_CC (VIH = 0.7×V_CC, VIL = 0.3×V_CC), ensuring reliable switching across 2–5.5 V supply range. Propagation delay is load-dependent: 3.8–5.5 ns (t_PLH/t_PHL) at V_CC = 5 V with 15-pF load and 25°C ambient.

Key Specifications

Pinout & Package

SN74LV07ADBR uses a 14-pin SSOP (Shrink Small Outline Package) with 0.65-mm pitch, body size 6.20 mm × 5.30 mm, and exposed pad not present. Pin 1 is located at top-left corner (Q1 quadrant per tape specification).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC07APW and MC74LCX07DT, the SN74LV07ADBR uniquely combines 5.5-V input/output tolerance, I_off protection, and 2–5.5 V operation - making it the sole option among these three for mixed-voltage hot-swap interfaces.

Availability

SN74LV07ADBR is available at Aetrix Electronics and suitable for server backplane interfaces, telecom line card control, and industrial PLC I/O expansion requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for SN74LV07ADBR 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 logic solutions, with over 90 years of innovation in industrial, automotive, and communications markets.

The SN74LV logic family targets low-voltage, mixed-supply applications requiring robust level translation, power-aware design, and wide operating temperature ranges - specifically engineered for infrastructure and embedded control systems.

FAQ

What is the maximum sink current supported by each output of the SN74LV07ADBR?

Each output of the SN74LV07ADBR supports up to 16 mA sink current when V_CC = 5 V, as specified in the Electrical Characteristics table under I_OL test conditions. At lower V_CC levels, the maximum sink current decreases: 8 mA at 3 V, 2 mA at 2.3 V. Exceeding these values risks violating absolute maximum ratings and may cause output voltage degradation or thermal stress. The SN74LV07ADBR datasheet confirms this behavior across its full operating range.

Does the SN74LV07ADBR support level translation between different supply voltages?

Yes, the SN74LV07ADBR supports bidirectional level translation due to its 5.5-V tolerant inputs and open-drain outputs. Inputs accept voltages up to 5.5 V regardless of V_CC, enabling 5-V signals to drive a 2.5-V powered device. Outputs can be pulled up to any voltage ≤5.5 V, allowing 3.3-V logic to control a 5-V bus. This capability is explicitly documented in the Feature Description and Application Information sections of the SN74LV07ADBR datasheet.

How does the I_off feature function in the SN74LV07ADBR during power-down sequences?

The I_off circuitry in the SN74LV07ADBR disables all outputs when V_CC = 0 V, limiting I_off current to <5 µA. This prevents reverse current flow from externally powered buses (e.g., 5-V pull-ups) into the unpowered IC, protecting both the SN74LV07ADBR and upstream drivers. The feature is active across –40°C to 125°C and is validated per JESD78 Class II latch-up testing, as confirmed in the SN74LV07ADBR device information and Detailed Description sections.

What package type and dimensions does the SN74LV07ADBR use?

The SN74LV07ADBR uses a 14-pin SSOP (Shrink Small Outline Package) with body dimensions of 6.20 mm × 5.30 mm and 0.65-mm lead pitch. Pin 1 is located in quadrant Q1 per tape-and-reel specifications. This package is distinct from SOIC (D), TVSOP (DGV), and TSSOP (PW) variants - confirmed in TI's Package Option Addendum where SN74LV07ADBR is explicitly listed under "SSOP (DB) | 14".

Can unused inputs on the SN74LV07ADBR be left floating?

No, unused inputs on the SN74LV07ADBR must be tied to either V_CC or GND to prevent undefined logic states and increased power consumption. The datasheet mandates this in Section 7.3 Recommended Operating Conditions and reiterates it in Layout Guidelines (Section 12.1), noting that floating CMOS inputs cause instability and potential shoot-through current. This requirement applies to all six input pairs (1A–6A) and is a fundamental design rule for reliable operation of the SN74LV07ADBR.