Nexperia USA Inc. 74HCT241D-Q100J

Overview

74HCT241D-Q100 from Nexperia is an automotive-qualified octal non-inverting 3-state buffer/line driver in SO20 (SOT163-1) package, featuring dual independent output enables (1OE active LOW, 2OE active HIGH), TTL-compatible input thresholds (VIH = 2.0 V min at VCC = 4.5–5.5 V), and operation across −40 °C to +125 °C. It supports 8-bit or split 4-bit bus interfacing in engine control units and ADAS domain controllers.

For engineers reviewing the 74HCT241D-Q100 datasheet, 74HCT241D-Q100 pinout, 74HCT241D-Q100 application, or 74HCT241D-Q100 equivalent, key selection criteria include dual 3-state enable logic, AEC-Q100 Grade 1 qualification, propagation delay ≤22 ns (VCC = 4.5 V), ±6 mA output drive, and SO20 thermal derating (12.3 mW/K above 109 °C).

Technical Context

This device implements two independent 4-bit buffered paths, each with dedicated output enable: Group 1 (1A0–1A3 → 1Y0–1Y3) controlled by 1OE (active LOW), and Group 2 (2A0–2A3 → 2Y0–2Y3) controlled by 2OE (active HIGH). Inputs accept TTL-level signals (VIH ≥ 2.0 V, VIL ≤ 0.8 V) while operating from a 4.5–5.5 V supply.

Each output delivers non-inverting logic with high-impedance OFF-state (IOZ ≤ ±10 μA at VCC = 5.5 V), and exhibits propagation delays of 11 ns (typ, VCC = 5.0 V, CL = 15 pF) and enable/disable times ≤45 ns (−40 °C to +125 °C). Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.

Key Specifications

Pinout & Package

74HCT241D-Q100 uses the SO20 (SOT163-1) plastic small outline package: 20-pin, 7.5 mm body width, 1.27 mm lead pitch, with gull-wing leads and pin 1 index marker. Thermal resistance θJA = 109 °C/W (derates 12.3 mW/K above this junction temperature).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HCT241QPWRQ1, the 74HCT241D-Q100 offers proven SO20 mechanical reliability in high-vibration environments; versus 74LVC241APW-Q100, it maintains native 5 V compatibility and TTL input robustness essential for legacy automotive subsystems.

Availability

74HCT241D-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and body control modules requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.

Supply support for 74HCT241D-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, reliable logic, analog, and MOSFET solutions with deep automotive qualification expertise and ISO/TS 16949-certified manufacturing.

The 74HCT241-Q100 belongs to Nexperia's automotive logic portfolio, engineered specifically for robust signal buffering in harsh-temperature vehicle subsystems where interoperability with legacy TTL and noise immunity are mandatory.

FAQ

What is the maximum output current per pin for 74HCT241D-Q100?

The device specifies ±6 mA output current per pin under VOH/VOL test conditions (VCC = 4.5–5.5 V). This is the guaranteed drive capability for maintaining valid logic levels into standard loads. Absolute maximum continuous output current is ±35 mA, but sustained operation above ±6 mA risks violating VOL/VOH specs and increasing junction temperature beyond safe limits.

Can 74HCT241D-Q100 interface directly with 3.3 V microcontrollers?

Yes - its TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) accept 3.3 V logic HIGH/LOW levels directly. However, outputs swing to 0 V/≈VCC (5 V), so connecting to 3.3 V-only inputs requires external level-shifting or series resistors to limit input current, as the device is not 5 V-tolerant on inputs.

How does the dual output enable architecture improve system design?

The independent 1OE (active LOW) and 2OE (active HIGH) allow asymmetric control of two 4-bit data groups. For example, one group can be enabled while the other remains in high-Z during bus arbitration, or both enables can be synchronized for full 8-bit operation - simplifying timing-critical multiplexing without external logic gates.

Is thermal derating required for continuous operation at +125 °C ambient?

Yes - the SO20 package (SOT163-1) has a thermal derating slope of 12.3 mW/K above 109 °C junction temperature. At +125 °C ambient, power dissipation must be limited to ≤500 mW × (1 − (125−109)/109) ≈ 430 mW to avoid exceeding absolute max junction temperature (150 °C), assuming typical θJA of 109 °C/W.