Nexperia USA Inc. 74LVTH16245BDGG,11

Overview

74LVTH16245BDGG,11 from Nexperia is a 3.3 V 16-bit bidirectional transceiver with 3-state outputs, dual direction control (1DIR/2DIR), dual output enables (1OE/2OE), and bus hold inputs eliminating external pull-ups. It operates from 2.7 V to 3.6 V, tolerates 5.5 V inputs, and delivers ±64 mA drive for interfacing between 3.3 V logic and 5 V buses in memory expansion and backplane data routing.

For engineers reviewing the 74LVTH16245BDGG,11 datasheet, 74LVTH16245BDGG,11 pinout, 74LVTH16245BDGG,11 application, or 74LVTH16245BDGG,11 equivalent, key selection criteria include its dual 8-bit configurable operation, overvoltage-tolerant inputs, bus hold functionality, and TSSOP48 package compatibility with high-density PCB layouts.

Technical Context

This BiCMOS transceiver implements two independent 8-bit bidirectional data paths, each controlled by dedicated DIR and OE signals-enabling flexible half-duplex bus arbitration. Its IOFF circuitry ensures partial power-down isolation when VCC = 0 V, while bus hold current (±75–135 μA) maintains valid logic states on unused inputs without external resistors.

Propagation delays are specified at 1.0–3.3 ns (tPLH/tPHL) and 1.0–5.7 ns (3-state enable/disable), measured under 50 pF load and 3.3 V supply. Input transition rate tolerance of ≤10 ns/V supports robust timing margin in noisy industrial bus environments.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm pitch, 1.2 mm max height - optimized for automated assembly and thermal dissipation in space-constrained boards.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC16245ADGGR and 74ALVCH16245PAG, the 74LVTH16245BDGG,11 uniquely combines 5.5 V input tolerance, bus hold, and ±64 mA drive-making it the only option among the three qualified for mixed-voltage industrial backplanes with uncontrolled I/O stubs.

Availability

74LVTH16245BDGG,11 is available at Aetrix Electronics and suitable for memory expansion interfaces, industrial backplane data routing, FPGA I/O expansion, and legacy ISA bus adapters requiring stable component supply across extended temperature ranges and mixed-voltage interoperability.

Supply support for 74LVTH16245BDGG,11 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 leading semiconductor manufacturer specializing in high-performance logic, analog, and MOSFET solutions, with global R&D and manufacturing infrastructure focused on industrial and automotive reliability standards.

The 74LVTH16245BDGG,11 belongs to Nexperia's LVT/LVTH logic family, engineered for high-speed, low-power bidirectional bus interfacing in mixed-voltage industrial control and computing systems.

FAQ

Can 74LVTH16245BDGG,11 safely interface a 3.3 V FPGA to a 5 V ADC without external level shifters?

Yes. Its inputs tolerate up to 5.5 V regardless of VCC, and outputs drive 5 V TTL loads directly. The device's overvoltage tolerance and ±64 mA output drive eliminate need for discrete translators when connecting to standard 5 V ADC parallel interfaces, provided the ADC inputs accept 3.3 V logic-high thresholds.

What is the function of the eight GND pins in the TSSOP48 package?

The eight GND pins provide low-inductance return paths for high-speed switching currents across both 8-bit ports. Their symmetric placement minimizes ground bounce, reduces EMI, and improves signal integrity-critical for maintaining sub-4 ns propagation delay consistency across all 16 data lines.

Does bus hold functionality remain active when VCC = 0 V?

No. Bus hold circuitry requires VCC ≥ 2.0 V to operate. However, the IOFF feature actively disables I/O leakage paths when VCC = 0 V, preventing back-driving of live buses during hot-swap events-complementing bus hold during powered operation.

How does the dual OE/DIR architecture improve system-level bus arbitration?

Dual OE/DIR allows independent control of two 8-bit segments-enabling byte-lane masking, staggered enable timing to reduce simultaneous switching noise, and asymmetric direction assignment (e.g., Port 1 A→B for writes, Port 2 B→A for reads), enhancing flexibility in multi-master bus protocols.