Nexperia USA Inc. 74LVT2245PW,112

Overview

74LVT2245PW,112 from Nexperia is an octal 3-state bidirectional bus transceiver with integrated 30 Ω output termination resistors, designed for 3.3 V LVTTL systems. It features direction control (DIR), output enable (OE), bus hold inputs, and overvoltage-tolerant inputs up to 5.5 V, enabling direct interfacing between 3.3 V logic and legacy 5 V buses in high-speed memory or peripheral data paths.

For engineers reviewing the 74LVT2245PW,112 datasheet, 74LVT2245PW,112 pinout, 74LVT2245PW,112 application, or 74LVT2245PW,112 equivalent, key selection criteria include its 30 Ω on-die termination, ±12 mA drive strength, 3.3 V supply range (2.7–3.6 V), and bus hold functionality eliminating external pull-ups in sparse-bus or hot-swap configurations.

Technical Context

This transceiver implements a dual-bus architecture with independent A- and B-side I/Os controlled by DIR and OE. Direction is determined synchronously: when DIR = LOW, data flows A→B; when DIR = HIGH, data flows B→A. OE asserts high-impedance state on both sides regardless of DIR state.

The device integrates BiCMOS output stages delivering TTL-compatible voltage levels and 30 Ω series termination per output-measured at DC-reducing signal reflections on PCB traces up to 100 MHz. Bus hold circuitry maintains valid logic states on unused inputs without external components, supporting live insertion and partial power-down via IOFF protection.

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 bidirectional transceiver applications.

Compared with 74LVTH2245PW,112, the 74LVT2245PW,112 offers lower power and sufficient speed for ≤100 MHz buses, while SN74LVC245APW trades integrated features for broader voltage range and lower unit cost-requiring additional passive components to match baseline functionality.

Availability

74LVT2245PW,112 is available at Aetrix Electronics and suitable for memory subsystem interfaces, industrial PLC backplanes, test equipment data links, and legacy peripheral bridges requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for 74LVT2245PW,112 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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVT series targets high-speed, low-power 3.3 V digital interfacing with emphasis on signal integrity, mixed-voltage compatibility, and robustness in harsh environments.

FAQ

What is the maximum clock frequency supported by the 74LVT2245PW,112?

The device does not operate on a clock; it is asynchronous. Its 3.2 ns typical propagation delay enables reliable use in parallel data buses running up to 200 MHz under ideal conditions. Maximum usable frequency depends on trace length, load capacitance, and system timing margins-not an internal clock domain.

Can the 74LVT2245PW,112 safely interface a 3.3 V FPGA to a 5 V EEPROM?

Yes. Inputs tolerate up to 5.5 V regardless of VCC level, allowing direct connection of 5 V EEPROM outputs to A/B pins. Outputs swing to 3.3 V levels, which are compatible with 5 V TTL input thresholds (VIH ≥ 2.0 V). No level shifter is needed for this configuration.

Does the bus hold feature eliminate all need for external pull-up resistors?

Bus hold maintains valid logic states on unused inputs but provides only ±75 μA to ±150 μA holding current. It is sufficient for static conditions but not for noise-prone environments or long traces. For robust immunity, external 10 kΩ pull-ups are still recommended in high-noise industrial settings.

Is the 30 Ω termination resistor value fixed or adjustable?

The 30 Ω value is fixed and integrated into each output driver stage. It is not user-adjustable or externally accessible. This value is optimized for impedance matching with common PCB trace impedances (50–75 Ω) in point-to-point or short-stub configurations.