Nexperia USA Inc. 74LVTH2245PW,118

Overview

74LVTH2245PW,118 from Nexperia is an octal 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 two 8-bit buses in high-speed 3.3 V systems such as backplane interfaces and memory expansion modules.

For engineers reviewing the 74LVTH2245PW,118 datasheet, 74LVTH2245PW,118 pinout, 74LVTH2245PW,118 application, or 74LVTH2245PW,118 equivalent, key selection criteria include its 30 Ω on-die termination for impedance-matched signaling, bus-hold functionality eliminating external pull-ups, TTL-compatible I/O levels, and guaranteed 3-state behavior during power-up/power-down sequences.

Technical Context

This transceiver implements a dual-bus architecture with independent DIR (direction) and OE (output enable) control signals. Its BiCMOS process enables TTL-level input thresholds and fast propagation delays - tPLH/tPHL ≤ 4.6 ns at VCC = 3.6 V - while maintaining low static current (ICC ≤ 0.19 mA) and robust ESD protection (HBM > 2000 V).

The device integrates bus-hold circuitry on all A-side and B-side I/O pins, providing active LOW/HIGH current (IBHL/IBHH = ±75–150 μA) to retain logic states on floating inputs without external components. IOFF circuitry ensures minimal leakage (< ±100 μA) when VCC = 0 V, supporting live insertion and partial power-down operation.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1), 20-pin plastic thin shrink small outline, 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 SN74LVC245APWR and 74ALVC16245DGG, the 74LVTH2245PW,118 uniquely combines 30 Ω termination, bus-hold, and 5.5 V-tolerant inputs in a compact TSSOP20 package - reducing component count and improving signal integrity in space-constrained 3.3 V bus interfaces.

Availability

74LVTH2245PW,118 is available at Aetrix Electronics and suitable for backplane routing, memory expansion, industrial I/O modules, and test equipment adapters requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature.

Supply support for 74LVTH2245PW,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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial, computing, and consumer applications.

The 74LVTH2245 belongs to Nexperia's LVT/LVTH logic family, engineered for high-speed 3.3 V bus interfacing with integrated signal integrity features - specifically targeting noise-sensitive, space-constrained, and mixed-voltage system designs.

FAQ

Does the 74LVTH2245PW,118 support hot-swap operation?

Yes. Its IOFF circuitry limits leakage current to < ±100 μA when VCC = 0 V, and its 5.5 V-tolerant inputs prevent damage during live insertion. Combined with power-up 3-state behavior, this enables safe hot-plug use in modular backplane and card-edge systems without external protection circuitry.

How does the 30 Ω termination resistor improve signal integrity?

The 30 Ω resistor is placed in series with each output driver, matching typical PCB trace impedances in short-run parallel buses (e.g., 3–10 cm). This reduces signal reflections and overshoot/undershoot, lowering bit error rates without requiring discrete resistors or layout tuning - verified by propagation delay consistency across load conditions in the datasheet.

Can the bus-hold feature replace external pull-up resistors on unused inputs?

Yes. Bus-hold provides active current (±75–150 μA) to retain the last valid logic state on any A/B pin left unconnected. This eliminates the need for 10 kΩ external pull-ups, reducing BOM cost and PCB footprint - confirmed by functional testing in Table 3 and static characteristics in Table 6 of the datasheet.

What is the maximum operating frequency supported by this transceiver?

While not specified as a clock frequency, the device supports data rates up to ~200 MHz based on its worst-case propagation delay of 4.6 ns (tPLH/tPHL at VCC = 3.6 V) and 3-state transition times ≤ 7.0 ns. This enables reliable use in high-speed parallel bus applications such as memory expansion and backplane interconnects.