Nexperia USA Inc. 74LVTH16245BDGG,51

Overview

74LVTH16245BDGG,51 from Nexperia is a 3.3 V, 16-bit bidirectional bus transceiver with dual 3-state outputs, two independent direction controls (1DIR/2DIR), and two output enables (1OE/2OE). It operates across 2.7–3.6 V, tolerates 5.5 V inputs, delivers ±64 mA drive, and features bus hold on all data inputs-enabling robust interface between 3.3 V logic and legacy 5 V systems in backplane or memory expansion applications.

For engineers reviewing the 74LVTH16245BDGG,51 datasheet, 74LVTH16245BDGG,51 pinout, 74LVTH16245BDGG,51 application, or 74LVTH16245BDGG,51 equivalent, key selection criteria include its dual 8-bit channel isolation, overvoltage-tolerant I/O, live-insertion capability, IOFF partial power-down, and TSSOP48 package compatibility with high-density PCB layouts.

Technical Context

This transceiver implements BiCMOS logic to achieve high-speed propagation (1.0–3.3 ns typical) while maintaining TTL-level compatibility and 5 V input tolerance. Its dual-channel architecture allows independent control of two 8-bit data paths via separate DIR and OE signals-supporting asymmetric bus flow in multiprocessor or FPGA-to-ASIC interconnects.

The integrated bus hold circuitry actively maintains logic states on unused inputs without external pull-ups, reducing BOM count and layout complexity. IOFF protection ensures minimal leakage (<±100 μA) during power sequencing, enabling safe hot-swap operation in modular systems.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) plastic thin shrink small outline package, 48-pin, 6.1 mm body width, 0.5 mm lead pitch - optimized for automated assembly and thermal performance in space-constrained designs.

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,51 uniquely combines 5.5 V input tolerance, ±64 mA drive, bus hold, and IOFF-making it the only option qualified for mixed-voltage, hot-swap, and high-noise industrial backplane use without supplemental components.

Availability

74LVTH16245BDGG,51 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion subsystems, FPGA-to-ASIC communication links, and hot-swappable module interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVTH16245BDGG,51 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 reliability, efficiency, and manufacturability for industrial and consumer applications.

The 74LVTH series targets high-speed, mixed-voltage digital interface applications-designed specifically for robust 3.3 V system integration with legacy 5 V infrastructure and demanding thermal/power constraints.

FAQ

Can 74LVTH16245BDGG,51 operate with a 2.5 V supply?

No. The device is specified for 2.7 V to 3.6 V operation per JEDEC JESD8C. At 2.5 V, VIH minimum (2.0 V) and VOL maximum (0.55 V) margins degrade, and bus hold functionality becomes unreliable. Operation below 2.7 V violates recommended conditions and may cause metastability or increased static current.

Does this transceiver support hot-swap without external circuitry?

Yes. Integrated IOFF circuitry limits power-off leakage to ±100 μA and prevents back-current flow during insertion. Combined with live-insertion qualification per JESD78 Class II, it enables safe hot-swap in powered backplanes without sequencers or external protection devices.

How does bus hold eliminate external pull-up resistors?

Each data input has active bus hold circuitry drawing ±75–135 μA to retain its last valid logic state. This provides sufficient current to overcome leakage and noise, making external pull-ups unnecessary-even with unterminated stubs or long traces-reducing BOM count and board area.

What is the maximum capacitive load this device can drive reliably?

Test data specifies reliable operation up to 50 pF load capacitance at 10 MHz with 500 ns pulse width and ≤2.5 ns rise/fall times. For heavier loads (>50 pF), propagation delay increases linearly; at 100 pF, tPLH/tPHL extends to ~5.1 ns (VCC = 3.3 V), remaining within functional timing budgets for ≤50 MHz bus operation.