Nexperia USA Inc. 74ALVCH16244DGG,11

Overview

74ALVCH16244DGG,11 from Nexperia is a 16-bit CMOS buffer/line driver with 3-state outputs, designed for voltage-level translation and bus isolation in 2.5 V/3.3 V digital systems. It features four independent output-enable inputs (1OE–4OE), active bus hold on all data inputs, IOFF partial power-down protection, and ±24 mA drive capability at 3.0 V. It is used in high-density PCBs requiring noise-immune signal buffering between FPGAs and memory or peripheral buses.

For engineers reviewing the 74ALVCH16244DGG,11 datasheet, 74ALVCH16244DGG,11 pinout, 74ALVCH16244DGG,11 application, or 74ALVCH16244DGG,11 equivalent, key selection criteria include bus hold functionality, 1.2 V to 3.6 V supply flexibility, TSSOP48 thermal and layout compatibility, and 3.0 ns max propagation delay at 3.3 V.

Technical Context

This device implements a quad 4-bit non-inverting buffer architecture with independent 3-state control per group. Each of the four output-enable signals (1OE–4OE) controls four corresponding Y outputs, enabling selective bus segmentation without contention.

The integrated bus hold circuitry maintains valid logic states on unused A-inputs without external resistors, while the IOFF feature disables outputs during partial power-down to prevent backflow current-critical for hot-swap and multi-rail system designs.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm pitch, 1.2 mm max height - optimized for high I/O density and thermal dissipation in compact layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74ALVC16244DGG,11 and SN74LVCH16244ADGGR, the 74ALVCH16244DGG,11 uniquely combines bus hold, 5.5 V input tolerance, and standardized OE placement in TSSOP48-making it optimal for first-pass designs requiring zero-resistor input stabilization and plug-compatible upgrades.

Availability

74ALVCH16244DGG,11 is available at Aetrix Electronics and suitable for memory subsystems, FPGA carrier boards, hot-swap backplanes, and industrial I/O modules requiring stable component supply across extended temperature ranges (−40 °C to +85 °C).

Supply support for 74ALVCH16244DGG,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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74ALVCH series targets high-speed, low-power, mixed-voltage digital interfacing-designed specifically for noise-sensitive, space-constrained applications where bus integrity and power sequencing robustness are critical.

FAQ

Does 74ALVCH16244DGG,11 support 1.8 V operation?

Yes. The device is fully specified from 1.2 V to 3.6 V, including 1.8 V. At 1.8 V, it delivers typical propagation delay of 2.8 ns and ±6 mA output drive, meeting JEDEC JESD8-7 standards for low-voltage logic interoperability.

Can unused inputs be left floating?

Yes-bus hold circuitry actively maintains valid logic levels on all A-inputs without external components. Measured bus hold current is ±75 μA at 3.0 V, ensuring stable HIGH/LOW retention within 100 mV of rail limits.

What is the maximum capacitive load this device can drive?

It is characterized for 50 pF loads at 3.3 V (t_pd ≤ 3.0 ns). With ±24 mA drive, it can reliably drive ≥50 Ω transmission lines; for heavier loads (>100 pF), propagation delay increases linearly and output rise/fall times degrade per dynamic characteristics table.

Is thermal derating required in TSSOP48 package?

Yes. Total power dissipation is rated at 500 mW at Tamb = −40 °C to +85 °C. At 85 °C ambient, maximum allowable power drops to ~350 mW due to thermal resistance (R_θJA ≈ 300 K/W); design margin requires limiting ICC × VCC + dynamic losses below that threshold.