Nexperia USA Inc. 74LVCH16245ADGG:11

Overview

74LVCH16245ADGG:11 from Nexperia is a 16-bit dual-directional bus transceiver with 3-state outputs, two independent direction controls (1DIR/2DIR), and two output enables (1OE/2OE). It operates from 1.2 V to 3.6 V supply, tolerates 5.5 V inputs, and features bus hold on all data I/Os - eliminating external pull-ups. Used in mixed-voltage board-level data buses between 3.3 V logic and 5 V peripherals.

For engineers reviewing the 74LVCH16245ADGG:11 datasheet, 74LVCH16245ADGG:11 pinout, 74LVCH16245ADGG:11 application, or 74LVCH16245ADGG:11 equivalent, key selection criteria include 5 V-tolerant input capability, IOFF partial power-down support, bus-hold functionality, propagation delay ≤6.0 ns at 3.3 V, and TSSOP48 thermal performance up to +125 °C.

Technical Context

This device implements dual 8-bit bidirectional data paths with independent direction and enable control per side, enabling flexible bus segmentation. Each port supports Schmitt-trigger inputs for noise immunity and IOFF circuitry that disables outputs during power-down to prevent backflow current.

The 74LVCH16245A variant integrates bus-hold circuits on all 32 data I/O pins (1A0–1A7, 1B0–1B7, 2A0–2A7, 2B0–2B7), sustaining logic states without external biasing. It complies with JEDEC standards JESD8-7A, JESD8-5A, and JESD8-C/JESD36 across its full 1.2 V–3.6 V VCC range.

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, 1.2 mm max height. Pin 1 index marked; lead finish: matte tin.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVC16245ADGG and SN74LVC16245ADGGR, the 74LVCH16245ADGG:11 uniquely delivers integrated bus-hold across all 32 data I/Os - reducing design risk, test time, and field failure modes related to floating inputs in modular or field-upgradable systems.

Availability

74LVCH16245ADGG:11 is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA I/O expansion, automotive infotainment gateways, and server baseboard management requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVCH16245ADGG:11 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 74LVCH16245A belongs to Nexperia's LVC/LVCH advanced logic family, engineered for low-voltage operation with robust mixed-signal interoperability - specifically targeting space-constrained, thermally demanding, and voltage-flexible digital interface designs.

FAQ

What is the maximum clock/data rate supported by the 74LVCH16245ADGG:11?

The device does not operate synchronously and has no clock input; its speed is defined by propagation delay. At VCC = 3.3 V and TA = 25 °C, tPD is typically 2.4 ns (max 4.5 ns), supporting reliable data handshaking up to ~100 MHz in well-terminated parallel bus configurations. System-level timing depends on trace length, load capacitance, and enable/disable sequencing.

Can the 74LVCH16245ADGG:11 be used with a 1.2 V supply and 3.3 V inputs?

Yes - the device supports VCC as low as 1.2 V while accepting input voltages up to 5.5 V regardless of supply level. When VCC = 1.2 V, VIH is guaranteed ≥1.08 V and VIL ≤0.12 V, ensuring clean recognition of 3.3 V logic HIGH/LOW levels without damage or undefined behavior.

How does the bus-hold feature behave during power-up or brown-out conditions?

Bus-hold remains active as long as VCC ≥0.8 V and input voltage is within −0.5 V to VCC +0.5 V. Below ~0.8 V, bus-hold weakens and eventually disables; however, IOFF ensures outputs enter high-impedance state before VCC drops below 0.5 V, preventing backfeeding. No external power-on reset is required for bus-hold initialization.

Is thermal derating required for continuous operation at +125 °C ambient?

Yes - for the TSSOP48 (SOT362-1) package, total power dissipation derates linearly at 12.2 mW/K above +109 °C. At +125 °C ambient, Ptot must be limited to ≤500 mW × (1 − (125−109)/1000) ≈ 480 mW. This corresponds to ≤20 mA average output current per pin under worst-case switching conditions.