Nexperia USA Inc. 74LVC16245AEV,157

Overview

74LVC16245AEV,157 from Nexperia is a 16-bit 3-state bus transceiver with dual direction control (1DIR/2DIR) and dual output enables (1OE/2OE), operating from 1.2 V to 3.6 V supply while tolerating 5.5 V inputs. It supports bidirectional data flow across two independent 8-bit channels or as a unified 16-bit interface, with Schmitt-trigger inputs for noise immunity and IOFF circuitry enabling partial power-down protection. It is used in mixed-voltage board-level interconnects between 3.3 V logic and legacy 5 V peripherals.

For engineers reviewing the 74LVC16245AEV,157 datasheet, 74LVC16245AEV,157 pinout, 74LVC16245AEV,157 application, or 74LVC16245AEV,157 equivalent, this device serves as a voltage-tolerant, low-power translation transceiver for high-density PCB bus isolation, memory expansion interfaces, and FPGA-to-ASIC data path bridging where rail-flexible I/O and bus hold (on LVCH variant) are required.

Technical Context

This transceiver implements dual independent 8-bit bidirectional data paths, each controlled by dedicated DIR and OE signals-enabling selective channel enable/disable without affecting the other. Its IOFF circuit actively disables outputs during power-down, blocking backflow current when VCC = 0 V.

Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at VCC = 3.3 V), allowing robust operation with slow-rising signals, while bus-hold functionality (on 74LVCH16245A variants) maintains last-valid state on unused data inputs without external pull-ups-though 74LVC16245AEV,157 itself does not include bus hold per ordering code and datasheet revision history confirming removal of EV package variants with bus hold.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: 48-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm pitch, lead finish matte tin.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVCH16245ADGV, the 74LVC16245AEV,157 lacks bus hold but offers identical voltage tolerance and lower static current; versus SN74LVC16245ADGGR, it provides superior ESD robustness (2000 V HBM vs 1500 V) and broader temperature qualification (–40 °C to +125 °C vs –40 °C to +85 °C).

Availability

74LVC16245AEV,157 is available at Aetrix Electronics and suitable for memory expansion interfaces, FPGA-to-microcontroller bridges, industrial PLC backplane interconnects, and test equipment signal routing matrices requiring stable component supply across extended temperature ranges and mixed-voltage environments.

Supply support for 74LVC16245AEV,157 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 74LVC logic family targets low-voltage, high-speed digital interfacing with emphasis on voltage translation, bus isolation, and power-sensitive embedded systems-designed to replace older 74HC/74ACT series while maintaining pin compatibility and improving noise immunity.

FAQ

What is the maximum clock/data rate supported by 74LVC16245AEV,157?

The device has no internal clock; its usable data rate depends on propagation delay and load. With t_pd ≤ 4.5 ns (VCC = 3.3 V) and 15 pF load, it supports clean 16-bit parallel transfers up to ~150 MHz in point-to-point configurations. System-level timing must account for PCB trace delays and setup/hold margins imposed by driving and receiving devices.

Can 74LVC16245AEV,157 be used in a 5 V-only system?

No-it requires VCC between 1.2 V and 3.6 V and is not rated to operate with VCC = 5 V. However, its inputs tolerate up to 5.5 V, so it can safely receive signals from 5 V devices while powered from 3.3 V or lower, making it ideal for translating down from 5 V logic to lower-voltage domains.

Does 74LVC16245AEV,157 include bus-hold functionality?

No. Bus hold is exclusive to the 74LVCH16245A variant (e.g., 74LVCH16245ADGV). The 74LVC16245A series-including 74LVC16245AEV,157-omits bus hold to reduce input leakage and static power, requiring external pull-up/down resistors on unused data lines if a defined idle state is needed.

How does the IOFF feature protect the device during power sequencing?

When VCC = 0 V, the IOFF circuit disables all outputs regardless of OE/DIR states, limiting output leakage to ±10 μA. This prevents reverse current flow from live 5 V buses into the unpowered IC, protecting both the transceiver and upstream drivers during staggered power-up/down sequences common in modular systems.