Nexperia USA Inc. 74LVT245PW,112

Overview

74LVT245PW,112 from Nexperia is an 8-bit bidirectional 3-state transceiver with independent direction (DIR) and output enable (OE) controls, operating from 2.7 V to 3.6 V supply. It features bus-hold inputs eliminating external pull-ups, overvoltage-tolerant inputs up to 5.5 V, ±64 mA/–32 mA output drive, and operates across –40 °C to +85 °C. It serves as a level-shifting interface between 3.3 V logic domains and legacy 5 V buses in industrial control backplanes.

For engineers reviewing the 74LVT245PW,112 datasheet, 74LVT245PW,112 pinout, 74LVT245PW,112 application, or 74LVT245PW,112 equivalent, key selection criteria include its 3.3 V BiCMOS architecture, 2.4 ns typical propagation delay at 3.3 V, IOFF power-down capability, bus-hold input retention, and TSSOP20 package compatibility with high-density PCB layouts.

Technical Context

The 74LVT245PW,112 implements a dual-bus octal transceiver with asynchronous DIR-controlled data flow direction and OE-gated 3-state outputs. Its BiCMOS process enables TTL-compatible input thresholds while sustaining 5.5 V-tolerant inputs and driving 5 V buses without current loading.

Functional operation is defined by three states: DIR = LOW enables A→B data transfer; DIR = HIGH enables B→A transfer; OE = HIGH forces all outputs into high-impedance. The IOFF circuit ensures minimal leakage (<±100 μA) during partial power-down, and bus-hold currents (±75–150 μA) maintain valid logic states on floating inputs.

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 74ALVC245PW,118, the 74LVT245PW,112 uniquely combines 5.5 V input tolerance, bus-hold, and IOFF in a single 3.3 V transceiver - making it the only option for robust 3.3 V ↔ 5 V backplane interfaces requiring zero external components and live-insertion support.

Availability

74LVT245PW,112 is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy system upgrade bridges, high-density communication modules, and hot-swappable card interfaces requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for 74LVT245PW,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 delivering high-performance, reliable logic, analog, and MOSFET solutions with focus on efficiency, miniaturization, and robustness for industrial and automotive markets.

The 74LVT series targets high-speed, mixed-voltage digital interfacing in industrial control, communications infrastructure, and instrumentation - emphasizing bus integrity, power-down safety, and long-term supply stability.

FAQ

Can 74LVT245PW,112 safely drive a 5 V bus while powered from 3.3 V?

Yes. Its inputs tolerate up to 5.5 V regardless of VCC, and its outputs can sink up to 64 mA while tied to a 5 V bus without drawing current from that rail. This is confirmed in Section 2 ("Features and benefits") and Table 5 ("Recommended operating conditions") of the datasheet, which specifies VI up to 5.5 V and explicitly states "No bus current loading when output is tied to 5 V bus".

Does 74LVT245PW,112 require external pull-up resistors on unused A/B pins?

No. It integrates bus-hold circuitry on all A0–A7 and B0–B7 pins, providing ±75–150 μA holding current to retain the last-valid logic state. This eliminates external pull-up/pull-down resistors, as stated in Section 2 and Table 6 ("Static characteristics") under IBHL/IBHH parameters.

What is the maximum guaranteed propagation delay at 3.3 V?

The maximum guaranteed tPLH and tPHL are 4.0 ns each at VCC = 3.3 V ± 0.3 V and –40 °C to +85 °C, per Table 7 ("Dynamic characteristics"). Typical delay is 2.4 ns, but system timing budgets must use the 4.0 ns worst-case value for synchronous bus design.

Is the TSSOP20 package of 74LVT245PW,112 RoHS compliant and lead-free?

Yes. Nexperia confirms SOT360-1 (TSSOP20) packaging for 74LVT245PW,112 meets RoHS Directive 2011/65/EU and is lead-free, as documented in the "Ordering information" table and package outline drawings (Fig. 7). The "112" suffix denotes tape-and-reel packaging compliant with J-STD-020 moisture sensitivity level 1.