Nexperia USA Inc. 74LVT244AD-Q100J

Overview

74LVT244AD-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 - deployed in automotive body control modules for CAN/LIN bus signal conditioning and level translation.

For engineers reviewing the 74LVT244AD-Q100 datasheet, 74LVT244AD-Q100 pinout, 74LVT244AD-Q100 application, or 74LVT244AD-Q100 equivalent, this page delivers verified pin functions, automotive-grade thermal and ESD specs (HBM >2000 V, CDM >1000 V), bus-hold input logic, and IOFF partial power-down behavior critical for hot-swap and low-power vehicle subsystems.

Technical Context

This BiCMOS octal buffer implements two independent 4-bit groups (1A0–1A3/1Y0–1Y3 and 2A0–2A3/2Y0–2Y3), each controlled by a dedicated active-low output enable (1OE, 2OE). Its architecture supports simultaneous bidirectional bus interfacing with TTL-compatible input thresholds and 3.3 V CMOS output swing.

The device integrates bus-hold circuitry on all data inputs (IBHL = 75–150 μA LOW, IBHH = −150 to −75 μA HIGH) and IOFF protection that disables I/O leakage (<±100 μA) during power-down - enabling safe live insertion and preventing floating-bus contention in distributed automotive networks.

Key Specifications

Pinout & Package

74LVT244AD-Q100 uses SO20 plastic small outline package (SOT163-1), 20-pin, 7.5 mm body width, with gull-wing leads and standard JEDEC pin 1 index marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVTH244AD-Q100, the original offers balanced design trade-offs: sufficient drive for most 3.3 V automotive buses, integrated bus-hold for robustness, and IOFF for safe power sequencing - whereas SN74LVC244AQDRQ1 sacrifices key automotive reliability features for broader voltage range and lower cost.

Availability

74LVT244AD-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, instrument cluster interfaces, power distribution units, and ADAS sensor hubs requiring stable component supply with full AEC-Q100 traceability.

Supply support for 74LVT244AD-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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions - delivering automotive-qualified components with rigorous AEC-Q100 validation and PPAP-ready manufacturing.

This device belongs to Nexperia's LVT/LVTH automotive logic family, engineered specifically for robust signal integrity, mixed-voltage interoperability, and fail-safe operation in harsh automotive electrical environments.

FAQ

Is 74LVT244AD-Q100 compatible with 5 V TTL logic inputs?

Yes - all inputs are overvoltage tolerant up to 5.5 V regardless of VCC level, allowing direct connection to 5 V TTL outputs without level-shifting circuitry. This is confirmed in Table 4 (Limiting Values) and Section 2 (Features), where VI(max) = +7.0 V and overvoltage tolerance is explicitly stated.

Does this device support hot-swap insertion in live automotive systems?

Yes - it supports live insertion and extraction per datasheet Section 2, enabled by IOFF circuitry (which blocks I/O leakage below ±100 μA when VCC = 0 V) and bus-hold inputs that retain logic state during power transitions. These features prevent bus contention and back-driving during plug-in events.

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

It reliably drives up to 50 pF loads with guaranteed timing: tPLH/tPHL ≤ 4.1 ns at VCC = 3.3 V (Table 7). For heavier loads (>50 pF), propagation delay increases linearly - validated test data in Table 9 specifies CL = 50 pF as the rated condition for switching performance.

How does the bus-hold feature eliminate external pull-up resistors?

Bus-hold circuitry actively maintains the last valid logic state on un-driven inputs using internal feedback transistors - providing 75–150 μA LOW hold current and −75 to −150 μA HIGH hold current (Table 6). This eliminates need for external resistors while improving noise immunity in electrically noisy vehicle cabins.