Nexperia USA Inc. 74ALVT16244DGG,112

Overview

74ALVT16244DGG,112 from Nexperia is a 16-bit 3-state buffer/line driver in TSSOP48 package, operating from 2.3 V to 3.6 V supply, featuring four independent output enables (1OE–4OE), bus hold on all data inputs, and overvoltage-tolerant inputs up to 5.5 V. It supports flexible partitioning as one 16-bit, two 8-bit, or four 4-bit buffers and is used in high-speed backplane and motherboard bus interface applications.

For engineers reviewing the 74ALVT16244DGG,112 datasheet, 74ALVT16244DGG,112 pinout, 74ALVT16244DGG,112 application, or 74ALVT16244DGG,112 equivalent, this page delivers verified functional architecture, real-world timing performance at 2.5 V and 3.3 V, bus hold current specifications, IOFF power-down behavior, and precise TSSOP48 pin mapping for PCB layout and signal integrity validation.

Technical Context

The device implements BiCMOS logic for high-speed propagation (as low as 0.8 ns tPLH at 3.3 V) while maintaining TTL-level compatibility and robust 5.5 V input tolerance. Its four independent OE controls enable granular bus segment isolation, and the integrated bus hold circuitry eliminates external pull-ups on unused inputs.

IOFF circuitry ensures partial power-down operation by disabling output leakage when VCC = 0 V, and latch-up immunity exceeds 500 mA per JESD78 Class II Level B. The device is fully characterized from −40 °C to +85 °C with static and dynamic parameters validated across both 2.5 V ±0.2 V and 3.3 V ±0.3 V operating conditions.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm lead pitch, 1.2 mm max height - optimized for high-density PCB layouts with thermal and signal integrity advantages over SSOP.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ALVTH16244VR and 74LVC16244APAG, the 74ALVT16244DGG,112 uniquely combines 5.5 V input tolerance, integrated bus hold, and industrial temperature range in a single TSSOP48 package - making it the only option that eliminates external components while supporting legacy 5 V peripheral integration in harsh environments.

Availability

74ALVT16244DGG,112 is available at Aetrix Electronics and suitable for industrial backplane interfaces, embedded controller bus expansion, memory-mapped FPGA configuration, and legacy peripheral bridging requiring stable component supply across extended temperature and mixed-voltage operation.

Supply support for 74ALVT16244DGG,112 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 logic, analog, and MOSFET solutions, delivering energy-efficient, reliable components for industrial, automotive, and consumer markets.

The 74ALVT series targets high-speed, low-voltage bus interface applications requiring robust noise immunity, mixed-voltage interoperability, and industrial temperature resilience - specifically engineered for backplane, motherboard, and modular system interconnects.

FAQ

Does the 74ALVT16244DGG,112 support hot-swap insertion?

Yes - its IOFF circuitry limits power-off leakage to ±100 μA when VCC = 0 V, preventing back-driving of live buses during insertion. Combined with 5.5 V input tolerance and controlled output transition times (tPLZ/tPHZ < 3.6 ns), it meets hot-swap safety requirements for modular chassis systems without external protection circuitry.

Can unused inputs be left floating?

Yes - all 16 data inputs feature integrated bus hold circuitry (IBHL/IBHH ±130 μA at 3 V), which actively maintains valid logic states without external resistors. This eliminates floating-input risks like oscillation or increased EMI, simplifying layout and reducing BOM count in partial-bus implementations.

What is the maximum clock rate supported for burst-mode bus operation?

At 3.3 V supply, the worst-case propagation delay (tPLH/tPHL) is 2.5 ns, supporting reliable 200 MHz burst-mode operation on point-to-point traces. With proper termination and <50 pF load, sustained toggling up to 300 MHz is achievable - confirmed by dynamic characterization in Table 7 under 3.3 V ±0.3 V conditions.

How does the device behave during power-up sequencing?

It features power-up 3-state behavior: outputs remain in high-impedance until VCC reaches ~1.2 V, then stabilize within 100 μs. Input leakage remains <0.1 μA during ramp-up, and IO(pu/pd) is limited to ±100 μA - preventing bus contention or false triggering during asymmetric power sequencing in multi-rail systems.