Diodes Incorporated 74LVC07AT14-13

Overview

74LVC07AT14-13 from Diodes Incorporated is a hex buffer IC with six independent open-drain outputs, designed for 1.65V–5.5V supply operation and 5.5V-tolerant inputs. It supports voltage translation, wired-OR logic, and partial power-down isolation via IOFF. Used in PC I/O expansion, peripheral interface control, and mixed-voltage signal conditioning.

For engineers reviewing the 74LVC07AT14-13 datasheet, 74LVC07AT14-13 pinout, 74LVC07AT14-13 application, or 74LVC07AT14-13 equivalent, key selection criteria include open-drain sink current (24mA @ 3.3V), IOFF-enabled backflow prevention, 5.5V input tolerance, and TSSOP-14 thermal resistance (θJA = 159°C/W).

Technical Context

This device implements six non-inverting buffers with open-drain outputs, enabling active-low wired-OR and active-high wired-AND bus configurations. Each channel operates independently with no internal inter-channel coupling.

IOFF circuitry disables output leakage when VCC = 0V, limiting backflow current to ≤20μA across –40°C to +125°C. Input thresholds scale with VCC (VIH = 0.65×VCC min at 1.65–1.95V), supporting reliable interfacing across 1.8V, 2.5V, 3.3V, and 5V domains.

Key Specifications

Pinout & Package

TSSOP-14 package: 4.9mm × 4.4mm body, 0.65mm pitch, 1.0mm max height, JEDEC MO-153 compliant. Exposed pad not present; thermal path relies on PCB copper area per recommended 5.9mm × 0.65mm pad layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC07APW and 74AHC07T14-13, the 74LVC07AT14-13 uniquely combines 1.65V operation, 5.5V input tolerance, and IOFF - making it the only option among the three qualified for ultra-low-voltage IoT nodes with mixed-rail wake-up signaling.

Availability

74LVC07AT14-13 is available at Aetrix Electronics and suitable for PC motherboard design, industrial peripheral interface development, and mixed-voltage sensor signal conditioning requiring stable component supply and long-term lifecycle assurance.

Supply support for 74LVC07AT14-13 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 manufacturer of discrete semiconductors and analog ICs, headquartered in California and operating ISO/TS 16949-certified facilities worldwide.

The 74LVC family targets low-voltage, high-speed logic applications in computing, communications, and industrial systems - emphasizing interoperability across voltage domains and robustness in real-world board-level environments.

FAQ

Can 74LVC07AT14-13 drive a 10kΩ pull-up resistor to 5V while maintaining logic-low voltage below 0.4V?

Yes. At VCC = 3.3V and IOL = 0.5mA (typical load for 10kΩ@5V), VOL is guaranteed ≤0.3V per datasheet Table 5. Even at full 24mA sink, VOL remains ≤0.6V - well within standard TTL and CMOS low-threshold margins.

Does 74LVC07AT14-13 require external pull-up resistors on all outputs?

Yes. As an open-drain device, each output (1Y–6Y) lacks internal pull-up circuitry and must be externally pulled to a defined high voltage (e.g., VCC, 5V, or another rail) to generate logic-high states in wired-OR or level-shifted configurations.

What happens to the outputs when VCC is disconnected or 0V?

IOFF activates automatically, placing all six outputs in high-impedance state with ≤20μA leakage current. This prevents back-driving powered circuits connected to the outputs - critical for hot-swap and partial-power-down system architectures.

Is 74LVC07AT14-13 compatible with 1.8V microcontroller GPIOs driving its inputs?

Yes. With VIH(min) = 0.65×VCC (e.g., 1.2V at VCC = 1.8V), a 1.8V MCU output of ≥1.2V meets the high-level input threshold. Its 5.5V-tolerant inputs also accept 3.3V or 5V signals without damage or level shifting.