Nexperia USA Inc. 74LVCH16244ADL,118

Overview

74LVCH16244ADL,118 from Nexperia is a 16-bit non-inverting 3-state buffer/line driver with bus-hold inputs, 1.2 V to 3.6 V supply operation, 5 V tolerant I/O, and IOFF partial power-down protection. It supports mixed-voltage translation between 3.3 V and 5 V systems and is configured as four independent 4-bit sections, each controlled by its own active-low output enable (1OE–4OE). Used in industrial backplane drivers and FPGA I/O expansion interfaces.

For engineers reviewing the 74LVCH16244ADL,118 datasheet, 74LVCH16244ADL,118 pinout, 74LVCH16244ADL,118 application, or 74LVCH16244ADL,118 equivalent, key selection criteria include bus-hold input retention, 5 V tolerance without external level shifters, IOFF-enabled safe power sequencing, Schmitt-trigger noise immunity, and TSSOP48 thermal performance at +125 °C ambient.

Technical Context

This device implements four independent 4-bit buffer sections with dedicated active-low output enables (1OE–4OE), enabling granular control of signal flow across 16 data lines. Each section features Schmitt-trigger inputs for robust noise rejection on slow-rising signals and bus-hold circuitry on all data inputs (A0–A3 per section) to maintain logic state without external pull-ups.

The IOFF circuit actively disables outputs when VCC = 0 V, blocking reverse current during partial power-down - critical for hot-swap and multi-rail system integrity. Input voltage range spans 0 V to 5.5 V, while output drive capability supports ±24 mA at 3.0 V VCC, with propagation delays as low as 1.0 ns (VCC = 2.7 V) and disable times under 5.2 ns.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: 48-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm lead pitch, exposed pad not present, JEDEC MO-153 compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit buffer/line driver applications.

Compared with 74LVC16244ADGG, the 74LVCH16244ADL,118 adds bus-hold to reduce component count and improve reliability in unpopulated I/O cases; versus SN74LVC16244ADGGR, it offers lower quiescent current and tighter propagation delay consistency across temperature, favoring power- and timing-critical industrial designs.

Availability

74LVCH16244ADL,118 is available at Aetrix Electronics and suitable for industrial backplane interfaces, FPGA I/O expansion, automotive diagnostic subsystems, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.

Supply support for 74LVCH16244ADL,118 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-enhancing components, delivering high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVCH16244ADL,118 belongs to Nexperia's LVC/LVCH advanced logic family, engineered for low-voltage operation with robust mixed-voltage interfacing, targeting space-constrained, thermally demanding digital interconnect applications.

FAQ

What is the function of the IOFF circuit in the 74LVCH16244ADL,118?

The IOFF circuit disables all outputs when VCC = 0 V, preventing reverse current flow from powered I/O lines into the unpowered device. This protects against latch-up and damage during partial power-down sequences, hot-swap operations, or system-level power cycling - a requirement for robust industrial and automotive-adjacent designs.

Can the 74LVCH16244ADL,118 drive 5 V logic inputs directly?

Yes - all inputs and outputs are 5 V tolerant up to 5.5 V, meaning they safely accept and drive standard TTL or 5 V CMOS logic levels regardless of the 1.2 V–3.6 V VCC supply. No external level shifters are needed when interfacing with 5 V peripherals like EEPROMs, ADCs, or legacy microcontrollers.

How does bus-hold functionality eliminate external pull-up resistors?

Bus-hold circuitry actively maintains the last-valid logic state on each data input (A0–A3 per section) using weak feedback transistors. At VCC = 3.0 V, it sources/sinks ±60–75 μA to hold the input near VIH or VIL thresholds - sufficient to override leakage and noise without external components, reducing BOM count and PCB area.

Is the 74LVCH16244ADL,118 pin-compatible with the 74LVC16244A series?

Yes - both share identical TSSOP48 (SOT362-1) pinout, functional block diagram, and recommended operating conditions. The only functional difference is bus-hold presence on all data inputs in the LVCH variant; control inputs (OE) lack bus-hold in both versions, preserving full drop-in replacement capability where bus-hold is unused.