Nexperia USA Inc. 74HCT241DB,118

Overview

74HCT241DB,118 from Nexperia is an octal non-inverting 3-state buffer/line driver with dual independent output enables (1OE active LOW, 2OE active HIGH), operating from 4.5 V to 5.5 V, supporting TTL-level inputs and delivering ±6 mA output drive at VCC = 4.5 V. It functions as two 4-bit buffers or one 8-bit bus interface in industrial control backplanes and microcontroller I/O expansion circuits.

For engineers reviewing the 74HCT241DB,118 datasheet, 74HCT241DB,118 pinout, 74HCT241DB,118 application, or 74HCT241DB,118 equivalent, key selection criteria include TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max), 3-state enable timing (ten = 15 ns typ, tdis = 18 ns typ at VCC = 4.5 V), output drive capability, and SO20 package thermal derating above 109 °C.

Technical Context

The device implements two independent 4-bit buffered paths, each controlled by a dedicated 3-state enable: 1OE (pin 1, active LOW) governs outputs 1Y0–1Y3, while 2OE (pin 19, active HIGH) controls 2Y0–2Y3. Input clamping diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.

Its CMOS architecture delivers low static power (ICC = 8 μA typ at 25 °C) and high noise immunity, with guaranteed operation from −40 °C to +125 °C and compliance with JEDEC JESD8C (2.7–3.6 V) and JESD7A (2.0–6.0 V) standards.

Key Specifications

Pinout & Package

74HCT241DB,118 is housed in a plastic small outline package (SO20, SOT163-1) with 20 leads and 7.5 mm body width. Thermal dissipation is rated at 500 mW, derating linearly by 12.3 mW/K above 109 °C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HCT241N, 74HCT241DB,118 offers identical logic and pinout but superior thermal management (SO20 derating starts at 109 °C vs. 100 °C for many SOIC variants); versus 74LVC241APW, it trades speed for 5 V system compatibility and robustness in mixed-voltage industrial environments.

Availability

74HCT241DB,118 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, microcontroller I/O expansion, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HCT241DB,118 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 specializing in high-performance, reliable discrete, logic, and MOSFET devices for automotive, industrial, and consumer markets.

The 74HCT series is engineered for TTL-compatible interfacing in 5 V systems, emphasizing robustness, wide temperature operation, and JEDEC-standard compliance for mission-critical industrial control and automotive subsystems.

FAQ

What is the maximum clock frequency supported by 74HCT241DB,118 in a bus application?

The device does not operate as a clocked sequential element but as a combinational buffer. Its 13 ns typical propagation delay (nAn → nYn, VCC = 5.0 V, CL = 15 pF) supports reliable data transfer up to approximately 30 MHz in synchronous bus configurations, assuming setup/hold margins and PCB trace delays are accounted for in system timing analysis.

Can 74HCT241DB,118 safely interface a 3.3 V microcontroller to a 5 V peripheral without external level shifters?

Yes-its TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V) accept 3.3 V logic HIGH as valid, and its input clamp diodes allow safe operation with series current-limiting resistors if the 3.3 V MCU outputs exceed VCC. No external level shifter is needed for basic logic-level translation.

How does the dual output enable (1OE and 2OE) improve system design flexibility?

1OE (active LOW) and 2OE (active HIGH) provide independent control over two 4-bit output groups, enabling asymmetric bus arbitration-for example, holding one group active while dynamically enabling/disabling the other via microcontroller GPIO. This eliminates external AND/OR logic and simplifies timing-critical bus sharing in multi-master systems.

Is 74HCT241DB,118 qualified for automotive applications per AEC-Q200?

No-while rated for −40 °C to +125 °C operation and widely used in automotive body control modules, 74HCT241DB,118 is not formally AEC-Q200 qualified. For automotive safety-critical applications, Nexperia recommends AEC-Q200-qualified alternatives such as the 74HCT241-Q100 variant, which undergoes additional stress testing and traceability controls.