Texas Instruments SN74LVC07ADT

Overview

SN74LVC07ADT from Texas Instruments is a hex buffer and driver IC with six independent open-drain outputs, designed for 1.65 V to 5.5 V operation. It delivers 24 mA sink current per output at 3.3 V, supports 5.5-V-tolerant inputs/outputs, achieves 2.6 ns max propagation delay at 5 V, and features Ioff for live insertion and partial-power-down protection. It serves as a level translator and high-drive buffer in mixed-voltage digital interfaces.

For engineers reviewing the SN74LVC07ADT datasheet, SN74LVC07ADT pinout, SN74LVC07ADT application, or SN74LVC07ADT equivalent, this page provides verified functional identity, SOIC-14 package mapping, confirmed open-drain output behavior, Ioff-enabled power sequencing support, and validated alternative options for voltage translation and bus driving use cases.

Technical Context

The SN74LVC07ADT implements six identical CMOS buffer stages, each with an input driving a single open-drain N-channel MOSFET output stage. No internal pull-up is present - external pull-up resistors are required to establish logic-high levels. The device operates across a wide VCC range (1.65–5.5 V) while maintaining 5.5-V input/output tolerance independent of supply voltage.

Its Ioff circuitry actively disables all outputs when VCC = 0 V, blocking current flow between powered and unpowered domains. Propagation delay is strictly defined under load (CL = 30 pF), and timing parameters (tpd, tPLZ/tPZL) are identical due to the open-drain architecture - no active pull-up path exists to differentiate rise/fall behavior.

Key Specifications

Pinout & Package

SN74LVC07ADT is housed in a 14-pin SOIC (D) package measuring 8.65 mm × 3.91 mm, with standard 1.27-mm pitch and gull-wing leads. Pin 1 is marked by a beveled corner or dot; the package is RoHS-compliant with NiPdAu (NIPDAU) lead finish and MSL Level-1 rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC07ADT, SN74LVC06ADT offers identical electrical performance with inverted outputs, while 74AHC07PW,118 trades off drive strength and Ioff for lower cost in fixed 5-V applications - neither is pin-compatible, requiring layout revision.

Availability

SN74LVC07ADT is available at Aetrix Electronics and suitable for industrial control I/O expansion, microcontroller GPIO buffering, wired-AND bus arbitration, and LED indicator driver applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for SN74LVC07ADT 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 company specializing in analog, embedded processing, and logic solutions, with leadership in industrial, automotive, and communications markets.

The SN74LVC07ADT belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-power, wide-supply-voltage interoperability in mixed-signal and multi-rail embedded systems.

FAQ

What is the maximum sink current per output of the SN74LVC07ADT?

The SN74LVC07ADT supports up to 24 mA sink current per output when VCC = 3 V and ambient temperature is ≤85°C. This value decreases slightly at higher temperatures or lower VCC (e.g., 12 mA at VCC = 2.3 V). Exceeding 24 mA risks violating absolute maximum ratings and may cause output voltage degradation or thermal stress. Always verify load conditions against the Electrical Characteristics table in the official SN74LVC07ADT datasheet.

Does the SN74LVC07ADT have built-in pull-up resistors on its outputs?

No, the SN74LVC07ADT does not include internal pull-up resistors. Its outputs are strictly open-drain and require external pull-up resistors to establish logic-high voltage levels. The value of the pull-up resistor depends on the target VOH, bus capacitance, and acceptable rise time - typical values range from 1 kΩ to 10 kΩ for 3.3-V or 5-V systems. Failure to add external pull-ups will result in undefined high-state behavior.

Can the SN74LVC07ADT operate with VCC disconnected while signals are applied to its inputs or outputs?

Yes, the SN74LVC07ADT supports this condition via its Ioff feature. When VCC = 0 V, the Ioff circuitry disables all outputs and limits input/output leakage to ±10 µA, preventing damaging back-current flow. This makes the SN74LVC07ADT suitable for live insertion, partial-power-down systems, and hot-swap applications - a key differentiator from non-Ioff logic families.

What is the propagation delay of the SN74LVC07ADT at 3.3 V supply?

At VCC = 3.3 V and CL = 30 pF, the SN74LVC07ADT exhibits a typical propagation delay (tpd) of 3.6 ns over –40°C to +85°C, with a maximum of 4.1 ns over the full –40°C to +125°C range. These values apply to both rising and falling edges because the open-drain architecture relies solely on external pull-up for rising transitions - the measured tpd reflects the intrinsic gate delay plus RC time constant of the external network.

Is the SN74LVC07ADT pin-compatible with other packages in the SN74LVC07A family?

No, the SN74LVC07ADT (SOIC-14) shares identical pinout and function with all SN74LVC07A variants (e.g., SN74LVC07ADB, SN74LVC07APW), as confirmed by TI's Device Information table and Pin Configuration diagrams. However, mechanical dimensions, thermal resistance, and packaging formats differ - direct PCB replacement requires matching footprint and reflow profile. Always verify land pattern and solder mask clearance before substitution.