Nexperia USA Inc. 74LVC16245ABX,518

Overview

74LVC16245ABX,518 from Nexperia is a 16-bit 3-state bus transceiver with dual direction control (1DIR/2DIR) and dual output enables (1OE/2OE), operating from 1.2 V to 3.6 V supply while accepting 5.5 V-tolerant inputs. It supports bidirectional data flow across two independent 8-bit ports or as a unified 16-bit interface, with Schmitt-trigger inputs for noise immunity and IOFF circuitry enabling safe partial power-down in mixed-voltage systems. It is used in FPGA-to-ASIC interconnects, memory expansion buses, and industrial controller backplanes requiring level translation between 3.3 V logic and legacy 5 V peripherals.

For engineers reviewing the 74LVC16245ABX,518 datasheet, 74LVC16245ABX,518 pinout, 74LVC16245ABX,518 application, or 74LVC16245ABX,518 equivalent, this device delivers verified 5.5 V input tolerance, sub-6 ns propagation delay at 3.3 V, bus hold functionality (on LVCH variant), IOFF-enabled hot-swap capability, and JEDEC-compliant operation across -40 °C to +125 °C - critical for robust embedded bus isolation and voltage-domain bridging.

Technical Context

This transceiver implements a dual 8-bit flow-through architecture with separate direction and enable controls per port, allowing independent bidirectional data routing without internal bus contention. Its CMOS design features rail-to-rail input thresholds with Schmitt-trigger hysteresis (≥0.3 V typical), ensuring reliable switching despite slow-rising signals from microcontrollers or legacy peripherals.

The IOFF circuit actively disables outputs when VCC = 0 V, blocking reverse current up to ±50 mA, while bus hold (on 74LVCH16245A variants) maintains stable logic states on unconnected data inputs without external pull-ups - eliminating BOM cost and board space for termination resistors in floating-bus applications.

Key Specifications

Pinout & Package

TSSOP48 package (SOT362-1), 48-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm lead pitch - optimized for automated SMT placement and thermal dissipation in dense logic interfaces.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit bidirectional bus transceiver applications.

Compared with 74LVCH16245ADGG, the 74LVC16245ABX,518 omits bus hold but retains identical IOFF, voltage tolerance, and timing - making it optimal for cost-sensitive, resistor-equipped designs. Versus SN74LVC16245ADGGR, it adds critical IOFF for hot-swap safety and wider 1.2 V min VCC for ultra-low-power operation.

Availability

74LVC16245ABX,518 is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA-to-ASIC interfaces, and automotive body control modules requiring stable component supply across extended temperature ranges and mixed-voltage interoperability.

Supply support for 74LVC16245ABX,518 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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets - delivering performance-per-watt leadership and AEC-Q100 qualified components.

The 74LVC/LVCH logic family targets robust, low-power bus interfacing in mixed-voltage embedded systems, emphasizing voltage translation, hot-swap safety (IOFF), and noise immunity (Schmitt triggers) for mission-critical control infrastructure.

FAQ

Does 74LVC16245ABX,518 support true 5 V operation?

No - its VCC range is strictly 1.2 V to 3.6 V. However, all inputs tolerate up to 5.5 V regardless of VCC level, enabling safe connection to 5 V signal sources without damage or level-shifting circuitry. Output swing remains rail-to-rail relative to VCC, not 5 V.

Can 1DIR and 2DIR be tied together for unified 16-bit operation?

Yes - connecting 1DIR and 2DIR allows simultaneous direction control across both 8-bit ports, effectively configuring the device as a single 16-bit transceiver. This is explicitly supported in the functional table and commonly used in memory-mapped bus extensions where direction is globally determined by R/W signal.

What is the purpose of multiple VCC and GND pins?

The four VCC and eight GND pins reduce power distribution inductance and ground bounce during fast 16-bit switching. This maintains signal integrity at high edge rates, prevents localized voltage droop that could cause timing violations, and meets stringent noise requirements in industrial and automotive environments.

Is bus hold functionality present on 74LVC16245ABX,518?

No - bus hold is exclusive to the 74LVCH16245A variant (e.g., 74LVCH16245ADGG). The 74LVC16245ABX,518 lacks internal bus hold circuitry; unused data inputs must be externally terminated with pull-up or pull-down resistors to prevent floating states and EMI susceptibility.