Nexperia USA Inc. 74LVC245ADB,112

Overview

74LVC245ADB,112 from Nexperia is an octal 3-state bus transceiver with bidirectional data flow controlled by DIR and active-low OE inputs. It operates from 1.2 V to 3.6 V, supports 5.5 V-tolerant inputs, features Schmitt-trigger inputs for noise immunity, and includes IOFF circuitry for partial power-down protection. It enables level translation between 3.3 V and 5 V domains in memory expansion interfaces.

For engineers reviewing the 74LVC245ADB,112 datasheet, 74LVC245ADB,112 pinout, 74LVC245ADB,112 application, or 74LVC245ADB,112 equivalent, key selection criteria include voltage translation capability (1.2–3.6 V supply with 5.5 V input tolerance), propagation delay (≤8.0 ns at 3.3 V), 3-state output control timing (enable/disable ≤11.0 ns), and thermal performance in SO20 package (Ptot = 500 mW).

Technical Context

This transceiver implements dual-bus bidirectional data routing using a single DIR signal to select direction (A→B or B→A) and an active-low OE to place all outputs in high-impedance state. Its CMOS design ensures low static current (ICC ≤ 40 μA at 3.6 V) and compatibility with TTL logic thresholds across its full supply range.

Schmitt-trigger inputs provide hysteresis (typ. 0.3–0.5 V) to tolerate slow-rising signals, while the IOFF feature disables outputs and blocks backflow current when VCC = 0 V - critical for hot-swap and mixed-voltage system interoperability.

Key Specifications

Pinout & Package

74LVC245ADB,112 uses the SOT163-1 (SO20) plastic small outline package: 20-pin, 7.5 mm body width, 1.27 mm lead pitch, surface-mount compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal bus transceiver applications.

Compared with 74LVC245ADB,112, the TSSOP variant offers superior thermal dissipation in compact layouts, while the TI alternative provides tighter IOFF leakage but lacks extended-temperature validation - making the Nexperia SO20 version optimal for ruggedized industrial deployments requiring proven long-term reliability.

Availability

74LVC245ADB,112 is available at Aetrix Electronics and suitable for memory expansion interfaces, industrial PLC backplanes, embedded test access ports, and legacy peripheral bridges requiring stable component supply across extended temperature ranges.

Supply support for 74LVC245ADB,112 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

Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions with focus on efficiency, reliability, and sustainability.

The 74LVC series targets low-voltage, high-speed digital interfacing in industrial, computing, and communications systems - designed specifically for robust mixed-voltage operation and power-aware system architectures.

FAQ

Can 74LVC245ADB,112 operate at 1.2 V supply while driving 5 V-tolerant inputs?

Yes. The device is fully specified down to 1.2 V supply and accepts input voltages up to 5.5 V regardless of VCC level. Input clamping diodes and internal protection circuitry ensure safe operation without external components, enabling true level translation in ultra-low-power systems.

What is the maximum capacitive load this transceiver can drive at 3.3 V?

At VCC = 3.3 V, it reliably drives 50 pF loads with propagation delay ≤6.3 ns and output skew ≤1.0 ns. This is validated per JEDEC test conditions (CL = 50 pF, RL = 500 Ω) and supports typical FR-4 PCB traces up to 15 cm in length at 100 MHz bus rates.

Does the SO20 package support reflow soldering per IPC-J-STD-020?

Yes. SOT163-1 (SO20) is qualified for standard lead-free reflow profiles per IPC-J-STD-020D, with peak temperature up to 260 °C for ≤30 seconds. Thermal pad (pin 10 GND) requires standard stencil design and solder paste volume to ensure mechanical stability and thermal conduction.

How does IOFF behavior differ between 74LVC245ADB,112 and 74LVCH245ADB variants?

Both parts implement IOFF, but only the LVCH version includes bus-hold on data inputs (A0–A7, B0–B7). The LVC variant lacks bus-hold, requiring external pull-ups/pull-downs in floating-bus scenarios - a key distinction affecting system-level noise immunity and power-up initialization behavior.