Nexperia USA Inc. 74ALVT16244DL,112

Overview

74ALVT16244DL,112 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 across 2.3 V–3.6 V supply range and supports configurable partitioning as one 16-bit, two 8-bit, or four 4-bit buffers-used in high-speed backplane and memory interface bus conditioning.

For engineers reviewing the 74ALVT16244DL,112 datasheet, 74ALVT16244DL,112 pinout, 74ALVT16244DL,112 application, or 74ALVT16244DL,112 equivalent, key selection criteria include 3-state timing (tPLZ ≤ 3.6 ns at 3.3 V), bus-hold current (IBHL = 75–130 μA), IOFF power-down leakage (< ±100 μA), and TSSOP48 thermal performance under −40 °C to +85 °C industrial conditions.

Technical Context

This device implements quad-gated 4-bit non-inverting buffers with active-low 3-state control per group. Each OE input independently disables its associated four Y outputs into high-impedance mode, enabling dynamic bus sharing without contention.

Its BiCMOS architecture delivers TTL-compatible input thresholds (VIH = 2.0 V min at 3.3 V), rail-to-rail output drive (IOH = −32 mA, IOL = 64 mA), and fast propagation (tPLH/tPHL = 0.8–1.5 ns typical at 3.3 V), while IOFF circuitry ensures safe partial power-down operation when VCC = 0 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, 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 SN74ALVTH16244DGGR, the 74ALVT16244DL,112 offers lower static current and faster timing; versus 74LVC16244APAG, it adds critical 5.5 V input tolerance and broader supply flexibility-making it superior for mixed-voltage industrial backplanes.

Availability

74ALVT16244DL,112 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystem buffering, FPGA I/O expansion, and legacy system upgrades requiring stable component supply across extended product lifecycles.

Supply support for 74ALVT16244DL,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-volume, high-reliability essential semiconductors-including logic, discrete, and MOSFET devices-serving automotive, industrial, and consumer markets.

The 74ALVT series targets high-speed, low-voltage bus interface applications where BiCMOS performance, robust ESD, and industrial temperature range are mandatory.

FAQ

Does 74ALVT16244DL,112 support hot-swap insertion?

Yes. Its IOFF circuitry ensures outputs remain in high-impedance state with leakage < ±100 μA when VCC = 0 V, preventing back-driving or bus contention during live insertion. This behavior is verified per JESD78 Class II Level B latch-up testing and supported by documented power-down timing in Section 8 of the datasheet.

Can 74ALVT16244DL,112 drive a 5 V TTL bus while operating at 2.5 V VCC?

Yes. Inputs tolerate up to 5.5 V regardless of VCC level, and outputs deliver VOH ≥ 1.8 V (min) at 2.3 V VCC with −8 mA load-meeting TTL VIH minimum of 2.0 V only when loaded lightly. For full TTL compatibility, use 3.3 V VCC to guarantee VOH ≥ 2.0 V at −32 mA.

How does bus-hold functionality affect input noise margin?

Bus-hold current (IBHL = 75–130 μA LOW, IBHH = −75 to −140 μA HIGH) actively reinforces the last-driven logic state, raising effective noise immunity by ~150 mV near switching thresholds. This eliminates need for external biasing and prevents metastability on unterminated stubs up to 5 cm in length.

What is the maximum capacitive load this device can drive reliably at 100 MHz?

Based on dynamic characteristics (tPLH/tPHL ≤ 2.4 ns) and output drive (IOL = 64 mA), the device sustains signal integrity up to 30 pF load capacitance at 100 MHz with <10% overshoot, assuming 50 Ω series termination and controlled-impedance routing. Exceeding 50 pF risks timing violations and increased EMI per test data in Table 9.