Nexperia USA Inc. 74ALVT16244DGG,118

Overview

74ALVT16244DGG,118 from Nexperia is a 16-bit BiCMOS buffer/line driver with 3-state outputs, four independent output enables (1OE–4OE), bus-hold inputs eliminating external pull-ups, and overvoltage-tolerant inputs up to 5.5 V. It operates from 2.3 V to 3.6 V and supports industrial temperature range (−40 °C to +85 °C), commonly used in high-speed data bus interfacing between mixed-voltage logic domains.

For engineers reviewing the 74ALVT16244DGG,118 datasheet, 74ALVT16244DGG,118 pinout, 74ALVT16244DGG,118 application, or 74ALVT16244DGG,118 equivalent, this page delivers verified functional architecture, TSSOP48 pin mapping, static/dynamic timing specs at 2.5 V and 3.3 V, bus-hold current values, IOFF power-down behavior, and real-world interface use cases for legacy TTL-to-ALVT bus bridging.

Technical Context

This device implements four independent 4-bit non-inverting buffers, each controlled by a dedicated active-low output enable (1OE–4OE). Each buffer section features bus-hold circuitry on all 16 data inputs, maintaining last-valid logic state without external biasing.

Its BiCMOS process enables TTL-level input compatibility while driving 32 mA LOW / −8 mA HIGH at 3.3 V, with propagation delays as low as 0.8 ns (tPLH/tPHL) and fast 3-state transition times (tPZH down to 1.0 ns), supporting >100 MHz bus operation under load.

Key Specifications

Pinout & Package

TSSOP48 package (SOT362-1), 6.1 mm body width, 0.5 mm lead pitch, surface-mount compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.

Compared with SN74ALVC16244DGGR and 74LVT162244DGG,118, the 74ALVT16244DGG,118 uniquely combines 5.5 V input tolerance, integrated bus-hold, and IOFF - making it the sole option for hot-pluggable, mixed-voltage, floating-input industrial bus architectures.

Availability

74ALVT16244DGG,118 is available at Aetrix Electronics and suitable for industrial PLC backplane interface, legacy TTL-to-ALVT bus bridging, test equipment signal conditioning, and modular I/O card data multiplexing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74ALVT16244DGG,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 high-performance, reliable standard logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74ALVT series targets high-speed, mixed-voltage digital interfacing applications where BiCMOS performance, bus-hold stability, and overvoltage resilience are critical - especially in industrial automation and test instrumentation.

FAQ

Can 74ALVT16244DGG,118 safely interface a 5 V microcontroller with a 2.5 V FPGA?

Yes. Its inputs tolerate up to 5.5 V regardless of VCC, allowing direct connection from 5 V MCU outputs to the device's A-inputs. Outputs swing rail-to-rail within the 2.3–3.6 V supply range, delivering clean 2.5 V logic levels to the FPGA when VCC = 2.5 V. No level-shifting components are required.

Does the bus-hold feature eliminate all need for external pull-up/pull-down resistors?

Bus-hold actively maintains the last-driven logic state on unused inputs, removing the need for external resistors in most cases. However, for inputs that must default to a known state (e.g., reset lines), a weak external resistor is still recommended - bus-hold does not force a specific initial state at power-up.

What is the maximum capacitive load this device can drive while maintaining specified timing?

The datasheet specifies dynamic characteristics with 50 pF load (Table 9). At 3.3 V supply, it reliably drives up to 50 pF while meeting tPLH ≤ 2.4 ns and tPZH ≤ 3.8 ns. For loads exceeding 50 pF, propagation delays increase linearly; derating curves are provided in Nexperia's ALVT application notes.

How does IOFF functionality behave during partial power-down of a system?

When VCC = 0 V, IOFF limits leakage current to ±100 μA per I/O pin, preventing back-powering of the powered side of the bus. This allows safe isolation of unpowered sections (e.g., removed I/O modules) without disrupting operation of active 3.3 V subsystems sharing the same data lines.