NXP Semiconductors 74HC241PW,112

Overview

74HC241PW,112 from Nexperia is an octal non-inverting 3-state buffer/line driver in TSSOP20 package, operating from 2.0 V to 6.0 V supply, featuring dual independent output enables (1OE active LOW, 2OE active HIGH), CMOS-level inputs, and ±35 mA output drive capability. It serves as a bidirectional bus interface or level-shifting driver in digital logic systems such as industrial control backplanes and microcontroller peripheral expansion.

For engineers reviewing the 74HC241PW,112 datasheet, 74HC241PW,112 pinout, 74HC241PW,112 application, or 74HC241PW,112 equivalent, key selection criteria include 3-state timing (enable/disable delays ≤45 ns at VCC = 4.5 V), input clamp diode support for overvoltage-tolerant interfacing, and −40 °C to +125 °C industrial temperature rating.

Technical Context

The device implements two independent 4-bit buffer sections-Group 1 (inputs 1A0–1A3, outputs 1Y0–1Y3, enable 1OE) and Group 2 (inputs 2A0–2A3, outputs 2Y0–2Y3, enable 2OE)-each with non-inverting logic and high-impedance OFF-state control. Input clamping diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.

Logic behavior follows standard TTL-compatible truth tables: 1OE = LOW enables Group 1 outputs; 2OE = HIGH enables Group 2 outputs; all other enable states force associated outputs to high-impedance Z. Propagation delay is 9 ns typical (VCC = 4.5 V, CL = 15 pF), with transition time ≤12 ns under same conditions.

Key Specifications

Pinout & Package

TSSOP20 plastic thin shrink small outline package (SOT360-1), 20-pin, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC241PW,112, the 74HCT241PW,112 trades supply voltage flexibility (2–6 V → 4.5–5.5 V) for guaranteed TTL input compatibility, while the SN74LVC244APWR sacrifices overvoltage tolerance and wide-temp operation for lower latency and reduced static current in 3.3 V domains.

Availability

74HC241PW,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, microcontroller I/O expansion, legacy bus translation, and automated test equipment requiring stable component supply across extended temperature ranges.

Supply support for 74HC241PW,112 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 with focus on reliability, efficiency, and manufacturability for industrial and automotive markets.

The 74HC241 belongs to Nexperia's HC-series logic family, engineered for robust operation in harsh industrial environments with emphasis on wide supply range, high noise immunity, and extended temperature qualification.

FAQ

What is the maximum clock frequency supported by the 74HC241PW,112?

The 74HC241PW,112 is not a clocked device but a combinational buffer; its usable data rate depends on propagation delay and system timing margins. With 9 ns typical tPD at VCC = 4.5 V and 15 pF load, it supports reliable operation in synchronous buses up to approximately 50 MHz, assuming setup/hold margins and PCB trace effects are accounted for in layout.

Can 74HC241PW,112 safely interface a 5 V signal to a 3.3 V microcontroller input?

No - the 74HC241PW,112 does not translate voltage levels. Its inputs tolerate up to VCC + 0.5 V only when used with external current-limiting resistors and clamp diodes enabled. To interface 5 V signals to a 3.3 V MCU input, use a dedicated level translator or add a voltage divider; the 74HC241 itself must be powered at the target logic voltage (e.g., 3.3 V) and driven by compatible inputs.

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

Yes - for the TSSOP20 (SOT360-1) package, total power dissipation derates linearly at 10.0 mW/K above +100 °C. At +125 °C, Ptot is reduced from 500 mW to 475 mW. Designers must calculate worst-case dynamic + static power (using CPD = 30 pF and ICC = 160 μA max) and verify junction temperature remains within limits using board-specific θJA.

How does the dual OE architecture improve system-level bus management?

The separate 1OE (active LOW) and 2OE (active HIGH) pins allow asynchronous control of two 4-bit data groups. This enables staggered bus access - e.g., one group latches data while the other releases - eliminating contention during multi-master arbitration or hot-plug events without requiring additional glue logic or firmware synchronization.