Nexperia USA Inc. 74LVCH16245AEV,151

Overview

74LVCH16245AEV,151 from Nexperia is a 16-bit CMOS bus transceiver with dual 8-bit directional control (1DIR/2DIR), dual 3-state output enables (1OE/2OE), 1.2 V to 3.6 V supply operation, 5.5 V tolerant inputs, and integrated bus hold on all data I/Os. It functions as a level-translating bidirectional interface between 3.3 V and 5 V domains in high-density memory or peripheral expansion buses.

For engineers reviewing the 74LVCH16245AEV,151 datasheet, 74LVCH16245AEV,151 pinout, 74LVCH16245AEV,151 application, or 74LVCH16245AEV,151 equivalent, this device delivers verified 2.4 ns typical propagation delay at 3.3 V, IOFF-enabled partial power-down protection, Schmitt-trigger input noise immunity, and TSSOP48 packaging for compact PCB layout in industrial control backplanes and FPGA I/O expansion.

Technical Context

This transceiver implements two independent 8-bit bidirectional data paths, each with dedicated direction (DIR) and output enable (OE) controls, enabling flexible byte-wise bus arbitration. Its bus hold circuitry eliminates external pull-ups on all 16 data pins-critical for floating-bus reliability in hot-swap or low-power standby modes.

The IOFF feature actively disables outputs during power-down, blocking damaging backflow current when VCC = 0 V while inputs remain at 5.5 V. Schmitt-trigger inputs tolerate slow-rising signals down to 10 ns/V transition rate, supporting legacy TTL-compatible timing without external conditioning.

Key Specifications

Pinout & Package

TSSOP48 package (SOT362-1): 48-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm lead pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVCH16245AEV,151, the 74LVC16245ADGG sacrifices bus hold functionality for lower unit cost, while the SN74LVC16245ADGGR trades full temperature-rated IOFF for TI ecosystem alignment-neither matches the combined bus hold, IOFF, and -40 °C to +125 °C qualification of the Nexperia part.

Availability

74LVCH16245AEV,151 is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA I/O expansion bridges, automotive body control modules, and automated test equipment requiring stable component supply across extended temperature ranges.

Supply support for 74LVCH16245AEV,151 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 essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVCH series targets robust, low-power bidirectional bus interfacing in mixed-voltage systems-designed specifically for industrial automation, automotive ECUs, and FPGA-based prototyping where reliability, voltage translation, and power-down safety are critical.

FAQ

What is the function of the bus hold circuit in the 74LVCH16245AEV,151?

The bus hold circuit actively maintains the last valid logic state on each data input (1A0–1A7, 1B0–1B7, 2A0–2A7, 2B0–2B7) when no driving signal is present, drawing ±75 μA at 3.0 V. This eliminates the need for external pull-up or pull-down resistors, reducing component count and PCB area while preventing undefined states during hot-swap or low-power modes.

Can the 74LVCH16245AEV,151 operate with a 1.2 V supply and still interface with 5 V inputs?

Yes. The device is fully specified from 1.2 V to 3.6 V supply and supports 5.5 V tolerant inputs regardless of VCC level. At 1.2 V supply, VIH is 1.08 V min and VIL is 0.12 V max, ensuring reliable recognition of 5 V TTL-level signals without damage or level-shifting circuitry.

How does the IOFF feature protect the device during partial power-down?

When VCC = 0 V, the IOFF circuit disables all outputs and blocks current flow between powered I/O lines and the unpowered device. Measured IOFF leakage is ≤±10 μA, preventing back-current that could damage upstream drivers or cause system latch-up-critical for hot-plug and power-gated subsystem designs.

Is the 74LVCH16245AEV,151 pin-compatible with the 74LVC16245A family?

Yes. The 74LVCH16245AEV,151 shares identical TSSOP48 pinout, electrical characteristics, and functional behavior with the 74LVC16245A series, except for the addition of bus hold on data inputs. Control inputs (DIR, OE) and power/ground pins are mapped identically, enabling drop-in replacement where bus hold is beneficial.