Nexperia USA Inc. 74LVTH244AD-Q100J

Overview

74LVTH244AD-Q100 from Nexperia is an AEC-Q100 Grade 3 qualified 3.3 V octal 3-state buffer/line driver in SO20 (SOT163-1) package, featuring dual output enables (1OE, 2OE), ±32 mA/±64 mA drive capability, and 5.5 V overvoltage-tolerant inputs - used for automotive bus interface and signal isolation in CAN/LIN subsystems.

For engineers reviewing the 74LVTH244AD-Q100 datasheet, 74LVTH244AD-Q100 pinout, 74LVTH244AD-Q100 application, or 74LVTH244AD-Q100 equivalent, key selection criteria include bus hold functionality, -40 °C to +85 °C operation, IOFF partial power-down, live insertion support, and compatibility with 5 V-tolerant backplane interfaces.

Technical Context

This BiCMOS octal buffer implements two independent 4-bit groups (Group 1: 1A0–1A3 → 1Y0–1Y3; Group 2: 2A0–2A3 → 2Y0–2Y3), each controlled by its own active-low output enable (1OE, 2OE). It supports mixed-voltage interfacing via 5.5 V-tolerant inputs while operating at 2.7–3.6 V VCC.

The device integrates bus hold circuitry on all data inputs (IBHL/IBHH ≥ ±75 μA), eliminating external pull-ups, and features IOFF protection that disables I/O leakage when VCC = 0 V - enabling safe hot-plug operation and partial power-down in multi-rail systems.

Key Specifications

Pinout & Package

74LVTH244AD-Q100 uses the SO20 plastic small outline package (SOT163-1), 20-pin, 7.5 mm body width, with standard gull-wing leads compatible with automated PCB assembly and AOI inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC244APWR, the 74LVTH244AD-Q100 adds bus hold, IOFF, and AEC-Q100 validation - making it mandatory for automotive bus isolation. Against 74LVCH244APW-Q100, it trades Schmitt input noise rejection for lower propagation delay (4.1 ns vs. 4.8 ns), favoring high-speed timing-critical paths.

Availability

74LVTH244AD-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, infotainment gateways, and ADAS camera hubs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVTH244AD-Q100 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 optimized for automotive, industrial, and mobile applications with emphasis on reliability and energy efficiency.

The 74LVTH series targets automotive-grade bus interface needs - designed specifically for noise-immune, hot-pluggable, and thermally robust signal routing in safety-critical vehicle subsystems.

FAQ

Can 74LVTH244AD-Q100 operate with a 2.5 V supply?

No. The recommended VCC range is strictly 2.7 V to 3.6 V per Table 5. At 2.5 V, VIH minimum (2.0 V) and VOH output voltage fall outside specification, risking logic misreads and insufficient drive strength. Operation below 2.7 V voids AEC-Q100 compliance and may cause bus hold failure.

Does this device support hot-swap without external protection?

Yes. The integrated IOFF circuitry ensures I/O pins enter high-impedance state with ≤100 μA leakage when VCC = 0 V, and live insertion/extraction is explicitly validated per datasheet Section 2. No series resistors or TVS diodes are required for basic hot-swap functionality in 3.3 V domains.

What is the maximum capacitive load this buffer can drive reliably?

Based on dynamic characteristics (Table 7) and test conditions (Table 9), the device is characterized up to 50 pF load capacitance with 500 Ω termination. For reliable 4.1 ns propagation at full drive, keep total net capacitance ≤40 pF - including trace, via, and receiver input capacitance - to maintain timing margin.

How does bus hold current affect power consumption in idle state?

Bus hold draws ±75 μA to ±150 μA per active input pin (Table 6, IBHL/IBHH), adding ~0.6 mA max for all eight inputs. This is included in the ICC spec of 0.19 mA (Table 6), so total quiescent current remains within datasheet limits even with all inputs held - no additional power budgeting needed.