Nexperia USA Inc. 74LVT2245PW,118

Overview

74LVT2245PW,118 from Nexperia is an 8-bit bidirectional bus transceiver with integrated 30 Ω output termination resistors, 3-state outputs, and bus hold inputs. It operates from 2.7 V to 3.6 V, delivers ±12 mA drive strength, supports 5.5 V-tolerant inputs, and enables direction-controlled data flow between A- and B-side buses in high-speed digital systems such as backplane interfaces and memory expansion modules.

For engineers reviewing the 74LVT2245PW,118 datasheet, 74LVT2245PW,118 pinout, 74LVT2245PW,118 application, or 74LVT2245PW,118 equivalent, key selection criteria include its 30 Ω on-die termination for impedance-matched signal integrity, bus hold functionality eliminating external pull-ups, TTL-compatible I/O levels, and guaranteed 3.6 ns max propagation delay at 3.3 V.

Technical Context

This BiCMOS transceiver implements dual-bus bidirectional data transfer using a single DIR control input and shared 3-state OE. Its internal 30 Ω series termination resistors are placed directly at each output driver stage, reducing stub reflections without requiring external components.

The device integrates bus hold circuitry on all A- and B-side I/O pins, maintaining valid logic states on unused inputs without external biasing. IOFF protection ensures low leakage (<±100 μA) when VCC = 0 V, enabling live insertion and partial power-down operation in hot-swap systems.

Key Specifications

Pinout & Package

TSSOP20 plastic thin shrink small outline package (SOT360-1), 20-pin, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVT2245PW,118, the SO20 variant offers mechanical robustness and thermal margin but increases board area, while the SN74LVC2245APWR trades integrated features for broader voltage support and higher drive-requiring additional passive components to match the signal integrity performance of the Nexperia device.

Availability

74LVT2245PW,118 is available at Aetrix Electronics and suitable for backplane routing, memory expansion, hot-swap I/O modules, and FPGA-to-ASIC interconnects requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature.

Supply support for 74LVT2245PW,118 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 specializing in high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer applications.

The 74LVT2245 belongs to Nexperia's LVT (Low-Voltage TTL) logic family, engineered for high-speed 3.3 V digital systems where signal integrity, low power, and robust bus interface capability are critical.

FAQ

Does 74LVT2245PW,118 support live insertion?

Yes. The device incorporates IOFF circuitry that disables output leakage paths when VCC = 0 V, and its bus hold inputs maintain defined logic states during power sequencing. These features, combined with overvoltage-tolerant inputs up to 5.5 V, meet industry requirements for live insertion and extraction in modular systems.

What is the purpose of the 30 Ω termination resistors?

The 30 Ω resistors are integrated in series with each output driver to match typical PCB trace impedances (e.g., 50 Ω) and minimize signal reflections at high-speed edges. They reduce overshoot, undershoot, and ringing without requiring external components, simplifying layout and improving timing margin in point-to-point or short-stub bus configurations.

Can 74LVT2245PW,118 interface directly with 5 V logic?

Yes-its inputs tolerate up to 5.5 V regardless of VCC level, allowing direct connection to 5 V outputs. However, its outputs swing only to VCC (max 3.6 V), so driving 5 V TTL inputs requires verification of VIH/VIL thresholds; for guaranteed compatibility, a level-shifter is recommended when driving 5 V loads.

How does bus hold functionality eliminate external pull-up resistors?

Each I/O pin contains a weak feedback circuit that sources or sinks ~100 μA to maintain the last-valid logic state when the pin is un-driven. This active retention replaces passive pull-up/pull-down resistors, preventing floating inputs and associated noise susceptibility-particularly valuable in systems with unused or dynamically configured bus lines.