NXP Semiconductors 74LVC38AD,118

Overview

74LVC38AD,118 from NXP Semiconductors is a quad 2-input NAND gate with 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, supports −40 °C to +125 °C ambient range, and features 5 V-tolerant inputs enabling mixed-voltage system interfacing in industrial control and embedded I/O expansion.

For engineers reviewing the 74LVC38AD,118 datasheet, 74LVC38AD,118 pinout, 74LVC38AD,118 application, or 74LVC38AD,118 equivalent, this device delivers verified open-drain wired-OR/AND capability, JEDEC-compliant voltage operation (JESD8-7A/5A/C), and ESD robustness (HBM >2000 V) critical for bus arbitration, interrupt combining, and I²C-compatible signal conditioning.

Technical Context

The 74LVC38AD,118 implements four independent NAND gates whose outputs remain in high-impedance state unless both inputs are HIGH, producing active-LOW output logic. Its open-drain architecture enables direct connection to shared pull-up networks without contention, supporting active-LOW wired-OR and active-HIGH wired-AND logic synthesis.

Input thresholds scale with VCC per JEDEC standards (e.g., VIH = 0.65×VCC at 1.65–1.95 V; VIH = 0.7×VCC at 4.5–5.5 V), while VOL remains ≤0.3 V at IO = 100 µA across 1.65–5.5 V - ensuring reliable low-level drive into varied load conditions including I²C bus capacitance.

Key Specifications

Pinout & Package

74LVC38AD,118 uses SO14 (SOT108-1) package: plastic small outline, 14-lead, 3.9 mm body width, gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NAND gate applications.

Compared with SN74LVC38AQPWRQ1, the 74LVC38AD,118 lacks automotive qualification but offers cost advantage for industrial use; compared with 74LVC38APW,118, it trades smaller footprint for easier rework and broader thermal mass in SO14.

Availability

74LVC38AD,118 is available at Aetrix Electronics and suitable for industrial control systems, embedded I/O expanders, and mixed-voltage interface modules requiring stable component supply across extended temperature ranges.

Supply support for 74LVC38AD,118 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 74LVC38AD,118 belongs to NXP's LVC logic family, engineered for low-voltage, high-speed, mixed-signal interfacing in resource-constrained embedded systems requiring robust voltage translation and bus flexibility.

FAQ

What is the maximum sink current per output of the 74LVC38AD,118?

The 74LVC38AD,118 supports up to 32 mA sink current per output at VCC = 4.5 V, as specified in Table 6 (VOL test condition). This enables direct driving of LEDs, optocouplers, or standard I²C bus pull-ups without external transistors. Derating applies above 70 °C per SO14 thermal specifications.

Does the 74LVC38AD,118 require external pull-up resistors on its outputs?

Yes, the 74LVC38AD,118 has open-drain outputs and requires external pull-up resistors to define the HIGH state voltage level. Typical values range from 1 kΩ (for speed-critical I²C) to 10 kΩ (for low-power GPIO expansion); selection depends on bus capacitance and rise time requirements.

Can the 74LVC38AD,118 operate at 1.2 V supply voltage?

Yes, the 74LVC38AD,118 is fully specified down to 1.2 V supply voltage per Table 5 (Recommended Operating Conditions). At 1.2 V, VIH is guaranteed ≥1.08 V and propagation delay increases to ≤5.7 ns (typical), making it suitable for ultra-low-power battery-operated devices.

Is the 74LVC38AD,118 pin-compatible with other 74LVC38x variants?

Yes, the 74LVC38AD,118 shares identical pinout with all 74LVC38A variants (e.g., 74LVC38ADB, 74LVC38APW, 74LVC38ABQ) per Table 1 and Figures 4–5. All use the same 14-pin functional assignment: inputs on pins 1/2/4/5/9/10/12/13, outputs on 3/6/8/11, GND on 7, VCC on 14.

What JEDEC standards does the 74LVC38AD,118 comply with?

The 74LVC38AD,118 complies with JEDEC standards JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V) for input voltage thresholds, ensuring interoperability with industry-standard logic families across multiple supply rails.