Nexperia USA Inc. 74ALVT16244DGG,518

Overview

74ALVT16244DGG,518 from Nexperia is a 16-bit non-inverting 3-state buffer/line driver in TSSOP48 package, operating from 2.3 V to 3.6 V supply. It features four independent output-enable inputs (1OE–4OE), bus-hold on all data inputs, overvoltage-tolerant inputs up to 5.5 V, and BiCMOS output drive supporting TTL-level interfacing. Used in high-speed address/data bus buffering for industrial control backplanes.

For engineers reviewing the 74ALVT16244DGG,518 datasheet, 74ALVT16244DGG,518 pinout, 74ALVT16244DGG,518 application, or 74ALVT16244DGG,518 equivalent, key selection criteria include 3-state timing (tPZL ≤ 4.7 ns at 2.5 V), bus-hold current (IBHL = 115 μA min at 2.3 V), IOFF power-down leakage (< ±100 μA), and TSSOP48 thermal performance across −40 °C to +85 °C.

Technical Context

The device implements four independent 4-bit buffer sections, each with dedicated active-low output enable (1OE–4OE) controlling four outputs. Each section operates as a non-inverting buffer with true 3-state output control-HIGH on nOE forces outputs into high-impedance OFF-state.

Bus-hold circuitry actively maintains logic state on unused inputs without external pull-ups, with IBHL ≥ 115 μA and IBHH ≤ −140 μA at 3 V. IOFF circuitry ensures partial power-down operation by limiting off-state leakage to < ±100 μA when VCC = 0 V and VI/VO = 0–4.5 V.

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 pad compatibility.

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,518 uniquely combines 5.5 V input tolerance, integrated bus-hold, and 64 mA drive strength - making it the only option for industrial backplanes requiring zero external biasing and robust 5 V interoperability.

Availability

74ALVT16244DGG,518 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automated test equipment signal routing, and network switch control plane interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74ALVT16244DGG,518 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, discrete, and MOSFET solutions with emphasis on reliability, efficiency, and scalability for industrial, automotive, and computing markets.

The 74ALVT series targets high-speed, low-voltage bus interface applications where BiCMOS performance, overvoltage tolerance, and bus-hold functionality are critical - specifically engineered for next-generation industrial control and instrumentation platforms.

FAQ

What is the maximum input voltage the 74ALVT16244DGG,518 can tolerate while powered from 2.5 V?

The device tolerates input voltages up to +5.5 V regardless of VCC level, as confirmed in Table 4 (Limiting Values) and Table 5 (Recommended Operating Conditions). This overvoltage capability allows direct interfacing with 5 V buses without level shifters or clamping diodes, even when VCC is 2.3–2.7 V.

Does the 74ALVT16244DGG,518 require external pull-up or pull-down resistors on unused inputs?

No. All 16 data inputs feature integrated bus-hold circuitry, which actively maintains the last valid logic state without external components. Typical IBHL is 115 μA at 2.3 V, eliminating need for pull resistors and reducing BOM count and board space in modular systems.

How does the IOFF circuitry function during power-down sequences?

When VCC = 0 V, the IOFF circuit limits leakage current to < ±100 μA even if inputs or outputs are biased to 0–4.5 V. This prevents parasitic power paths and unintended logic transitions during hot-swap or partial system shutdown - critical for field-replaceable modules in telecom and industrial gear.

Can the 74ALVT16244DGG,518 be used in a 16-bit bidirectional data bus configuration?

No - it is a unidirectional non-inverting buffer only. While OE pins allow 3-state control per 4-bit group, there is no direction-control pin or internal transceiver logic. For bidirectional 16-bit operation, a dedicated transceiver like 74ALVT16245 would be required instead.