Nexperia USA Inc. 74LVT162245BDGG,51

Overview

74LVT162245BDGG,51 from Nexperia is a 3.3 V 16-bit bidirectional transceiver with integrated 30 Ω series output termination resistors, dual independent direction (1DIR/2DIR) and output enable (1OE/2OE) controls, ±12 mA drive strength, and bus-hold inputs eliminating external pull-ups. It operates across 2.7 V–3.6 V and supports hot-plug operation in high-speed parallel bus interfaces such as memory expansion and backplane data routing.

For engineers reviewing the 74LVT162245BDGG,51 datasheet, 74LVT162245BDGG,51 pinout, 74LVT162245BDGG,51 application, or 74LVT162245BDGG,51 equivalent, this device delivers deterministic 3-state timing (tPLH/tPHL ≤ 3.5 ns at 3.3 V), overvoltage-tolerant 5.5 V inputs, and IOFF power-down protection - critical for mixed-voltage system interconnects and legacy TTL-compatible upgrades.

Technical Context

The 74LVT162245B implements two independent 8-bit transceiver blocks (A↔B), each with dedicated DIR and OE pins enabling asymmetric bus control. Its BiCMOS architecture combines bipolar speed with CMOS low static power, achieving sub-4 ns propagation delay while maintaining TTL-level compatibility and 5.5 V input tolerance.

Each output integrates a 30 Ω series resistor to match typical PCB trace impedance, suppressing reflections without external components. Bus-hold circuitry actively maintains last-valid logic state on unused inputs, and IOFF ensures near-zero leakage when VCC = 0 V - essential for partial-power-down systems and live insertion scenarios.

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 high-density PCB layouts with thermal and mechanical reliability in industrial temperature range (−40 °C to +85 °C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC16245ADGGR and 74ALVCH162245PAG, the 74LVT162245BDGG,51 uniquely combines integrated 30 Ω termination, bus-hold, and IOFF in a single TSSOP48 package - reducing component count, simplifying layout, and enabling robust hot-plug operation without design trade-offs in drive strength or timing.

Availability

74LVT162245BDGG,51 is available at Aetrix Electronics and suitable for memory expansion interfaces, industrial backplane routing, legacy system upgrade bridges, and high-density FPGA I/O expansion requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVT162245BDGG,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 efficiency, reliability, and miniaturization for industrial, automotive, and computing markets.

The 74LVT162245B belongs to Nexperia's LVT (Low-Voltage TTL) logic family, engineered specifically for high-speed, low-noise 3.3 V parallel bus interfacing in space-constrained and thermally demanding applications.

FAQ

Does the 74LVT162245BDGG,51 support hot-plug insertion?

Yes. The device supports live insertion and extraction due to its power-up 3-state behavior, IOFF circuitry that blocks current flow when VCC = 0 V, and overvoltage-tolerant inputs rated to 5.5 V. These features prevent bus contention, back-driving, and latch-up during hot-swap events in modular systems.

What is the function of the bus-hold inputs on this transceiver?

Bus-hold inputs actively retain the last valid logic state (HIGH or LOW) on unused or unterminated data lines using internal feedback circuitry. This eliminates the need for external pull-up or pull-down resistors, reduces BOM cost, prevents floating inputs from causing oscillation or increased EMI, and improves system reliability in dynamic bus environments.

Can the 74LVT162245BDGG,51 interface directly with 5 V logic systems?

Yes - its inputs tolerate up to 5.5 V regardless of VCC level (2.7–3.6 V), allowing direct connection to 5 V TTL or CMOS outputs without level shifters. However, outputs swing only to VCC levels (~3.3 V), so driving 5 V inputs requires external pull-ups or compatible 3.3 V–tolerant receivers.

How does the integrated 30 Ω termination resistor affect PCB layout?

The 30 Ω series resistor is built into each output driver, matching typical PCB trace impedances for point-to-point or short stub topologies. This removes the need for 32 discrete 30 Ω resistors, saves ~200 mm² board area, eliminates solder joint reliability risks, and ensures consistent termination without layout-dependent parasitic variations.