Nexperia USA Inc. 74LVC244ADB-Q100J

Overview

74LVC244ADB-Q100 from Nexperia is an automotive-grade octal non-inverting 3-state buffer/line driver in SSOP20 package (SOT339-1), operating from 1.2 V to 3.6 V supply, with 5.5 V-tolerant inputs, Schmitt-trigger inputs for noise immunity, and bus-hold functionality on data inputs. It enables bidirectional voltage translation between 3.3 V and 5 V logic domains in engine control units and body electronics.

For engineers reviewing the 74LVC244ADB-Q100 datasheet, 74LVC244ADB-Q100 pinout, 74LVC244ADB-Q100 application, or 74LVC244ADB-Q100 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (-40 °C to +125 °C), 5 V input tolerance, bus-hold capability eliminating external pull-ups, and propagation delay as low as 2.9 ns at 3.3 V.

Technical Context

This device implements two independent 4-bit non-inverting buffer groups (1A0–1A3 and 2A0–2A3), each controlled by dedicated active-low 3-state enable inputs (1OE, 2OE). Outputs enter high-impedance state when respective OE is HIGH, enabling shared bus operation without contention.

Schmitt-trigger inputs ensure robust operation with slow-rising signals (Δt/ΔV up to 20 ns/V at 1.2 V), while bus-hold circuitry maintains stable logic states on unused data inputs-eliminating need for external biasing. All inputs tolerate up to 5.5 V regardless of VCC level.

Key Specifications

Pinout & Package

74LVC244ADB-Q100 uses the SSOP20 package (SOT339-1), a 20-pin shrink small outline package with 0.65 mm pitch, 7.2 mm body width, and exposed thermal pad for enhanced thermal performance in automotive modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVC244APW-Q100, the 74LVC244ADB-Q100 adds bus-hold but uses SSOP instead of TSSOP; compared with 74LVCH244ABQ-Q100, it shares bus-hold but differs in package thermal profile and inspection compatibility.

Availability

74LVC244ADB-Q100 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera interfaces, and infotainment display subsystems requiring stable component supply across automotive production lifecycles.

Supply support for 74LVC244ADB-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, analog, and MOSFET solutions optimized for automotive, industrial, and consumer applications.

The 74LVC244ADB-Q100 belongs to Nexperia's automotive-qualified LVC logic family, designed specifically for robust signal buffering and voltage translation in harsh-temperature vehicle environments.

FAQ

What is the maximum input voltage the 74LVC244ADB-Q100 can withstand?

The device accepts input voltages up to 5.5 V regardless of VCC level, verified per Table 5 (Recommended Operating Conditions) and Table 4 (Limiting Values). This 5 V tolerance enables safe interfacing with legacy 5 V logic families while operating from 1.2–3.6 V supplies, without external clamping components.

Does the 74LVC244ADB-Q100 include bus-hold functionality?

Yes - all eight data inputs (1A0–1A3, 2A0–2A3) feature integrated bus-hold circuitry, providing ±75 μA sustaining current at VCC = 3.0 V (Table 9). This eliminates external pull-up/pull-down resistors on unused inputs, reducing BOM cost and PCB area in automotive modules.

How does the Schmitt-trigger input improve noise immunity?

Schmitt-trigger inputs provide ≥0.5 V hysteresis (per functional description), making them tolerant to slow-rising/falling signals and electromagnetic noise on long vehicle harnesses. This prevents false triggering in noisy environments like engine bays, where signal edges may degrade over distance.

Can the 74LVC244ADB-Q100 drive 5 V loads in 3-state mode?

Yes - outputs remain 5 V tolerant in high-impedance state (Table 5), allowing safe connection to 5 V buses even when VCC = 1.2 V. This enables true bidirectional voltage translation in shared-bus architectures, such as those found in gateway ECUs managing multiple voltage domains.