NXP Semiconductors 74LVC06AD/AUJ

Overview

74LVC06AD/AUJ from NXP Semiconductors is a hex inverting buffer IC with six independent open-drain outputs, designed for level translation between 3.3 V and 5 V logic domains. It operates across 1.2 V to 5.5 V supply voltage, supports −40 °C to +125 °C ambient range, and delivers sub-3.5 ns propagation delay at 5 V. It enables active-LOW wired-OR bus interfaces in I²C, SMBus, and system control signaling.

For engineers reviewing the 74LVC06AD/AUJ datasheet, 74LVC06AD/AUJ pinout, 74LVC06AD/AUJ application, or 74LVC06AD/AUJ equivalent, this device is selected for mixed-voltage interface design, open-drain bus arbitration, and TTL-compatible signal inversion where low static current (<10 µA at 5.5 V), 5 V-tolerant inputs, and JEDEC-compliant voltage thresholds are required.

Technical Context

The 74LVC06AD/AUJ implements six independent CMOS inverters with open-drain outputs, each switching between high-impedance (Z) and LOW states-no internal pull-up. Input thresholds scale with VCC per JEDEC standards JESD8-7A, JESD8-5A, and JESD8-C/JESD36, enabling reliable operation across 1.2 V, 1.8 V, 2.5 V, 3.3 V, and 5 V rails.

Its functional behavior follows Table 3: input HIGH drives output LOW; input LOW places output in high-impedance state. Propagation delays (tPZL/tPLZ) are specified down to 1.2 V supply and vary with VCC and load-e.g., 0.7–3.5 ns at 4.5–5.5 V with 50 pF load and 500 Ω termination.

Key Specifications

Pinout & Package

74LVC06AD/AUJ is housed in SO14 (SOT108-1): plastic small outline package, 14-lead, 3.9 mm body width, 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC06APW, 74LVC06AD/AUJ offers identical logic and DC specs in a larger, more manufacturable SO14 package; versus 74AHC06PW, it provides broader supply range and true 5 V input tolerance-critical for brownout resilience and multi-rail interoperability.

Availability

74LVC06AD/AUJ is available at Aetrix Electronics and suitable for I²C bus extension, SMBus fault aggregation, GPIO level translation, and legacy TTL interface adaptation requiring stable component supply across industrial, computing, and communications platforms.

Supply support for 74LVC06AD/AUJ 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The 74LVC06AD/AUJ belongs to NXP's LVC (Low-Voltage CMOS) logic family, engineered for interoperability across voltage domains and robust operation in harsh thermal environments.

FAQ

What is the maximum sink current capability of each output in 74LVC06AD/AUJ?

Each open-drain output of the 74LVC06AD/AUJ can sink up to 32 mA when VCC = 4.5 V and VO = 0.55 V (typical), as specified in Table 6 under VOL conditions. At lower voltages-e.g., 2.7 V-the guaranteed sink is 12 mA with VOL ≤ 0.4 V. Exceeding these limits risks violating VOL specifications or degrading long-term reliability.

Can 74LVC06AD/AUJ operate reliably at 1.2 V supply voltage?

Yes, the 74LVC06AD/AUJ is fully specified down to 1.2 V supply voltage per Table 5 (Recommended Operating Conditions). At 1.2 V, it maintains valid VIH/VIL thresholds (VIH = 1.08 V min, VIL = 0.12 V max), though propagation delay increases to ~9 ns (tPZL/tPLZ typical) and output drive strength is reduced. This enables use in ultra-low-power subsystems where 1.2 V cores coexist with higher-voltage peripherals.

Is 74LVC06AD/AUJ pin-compatible with older 74LS06 or 74HC06 devices?

The 74LVC06AD/AUJ shares the same SO14 pinout (1A–6A inputs on odd pins, 1Y–6Y outputs on even pins, GND on pin 7, VCC on pin 14) as 74LS06 and 74HC06. However, it is not a direct functional replacement: unlike those parts, 74LVC06AD/AUJ has open-drain-not open-collector-outputs and lacks internal pull-ups. External pull-ups are mandatory, and logic polarity must be verified in system context.

Does 74LVC06AD/AUJ support I²C bus speeds up to 400 kHz?

Yes, the 74LVC06AD/AUJ supports standard-mode (100 kHz) and fast-mode (400 kHz) I²C operation. Its sub-3.5 ns propagation delay at 5 V, combined with low output capacitance (CI = 5.0 pF typ) and compatibility with typical 1–10 kΩ pull-ups, ensures rise/fall times remain within I²C specification limits-even with 400 pF total bus capacitance. System-level timing validation is still recommended.

What is the purpose of the substrate pad (pin 1) in the DHVQFN14 variant-and does it apply to 74LVC06AD/AUJ?

The substrate pad referenced in Figure 5 applies only to the DHVQFN14 (74LVC06ABQ) variant-not to 74LVC06AD/AUJ, which uses SO14 (SOT108-1). The SO14 package has no exposed thermal pad. For 74LVC06AD/AUJ, pin 1 is the 1A input; no thermal pad connection or floating land requirement exists. Thermal dissipation relies on lead-frame conduction through pins 7 (GND) and 14 (VCC).