NXP Semiconductors N74F258AN,602

Overview

N74F258AN,602 from Philips Semiconductors is a quad 2-line to 1-line inverting multiplexer with 3-State outputs, designed for digital signal routing in TTL-compatible logic systems. It features four independent 2:1 data selectors, common Select (S) and Output Enable (OE) controls, 3.5 ns typical propagation delay, 14 mA typical supply current, and operates across 0°C to +70°C at 5 V ±10%. It is used in bus arbitration, data path switching, and address/data multiplexing in industrial control logic.

For engineers reviewing the N74F258AN,602 datasheet, N74F258AN,602 pinout, N74F258AN,602 application, or N74F258AN,602 equivalent, key selection criteria include its inverting output behavior, 3-State drive capability, guaranteed 6.0 ns max propagation delay over temperature, OE-active-Low timing, and compatibility with 74F-family loading and fan-out specifications.

Technical Context

The N74F258AN,602 implements four identical 2-input multiplexers sharing one Select (S) input and one active-Low Output Enable (OE). When OE is High, all outputs enter high-impedance state regardless of S or data inputs. When OE is Low, I0n inputs pass to Yn outputs inverted when S = Low; I1n inputs pass inverted when S = High.

Its logic diagram confirms full inversion on all data paths: both I0n and I1n are inverted before selection, and the selected signal undergoes a final inversion at the output stage. The device complies with FAST TTL electrical standards, including 20 µA/0.6 mA input loading, 3.0 mA/24 mA output drive capability, and 150/40 FAST Unit Load fan-out ratings for High/Low states.

Key Specifications

Pinout & Package

Package: 16-pin plastic DIP (SOT38-4), 300 mil width, through-hole mount.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2:1 inverting multiplexer applications.

Compared with SN74F258N, N74F258AN,602 offers identical functionality and timing but differs in manufacturer qualification and traceability; compared with 74ACT258PC, it delivers faster propagation, guaranteed inversion, and native 5 V drive-critical for legacy TTL bus integrity.

Availability

N74F258AN,602 is available at Aetrix Electronics and suitable for industrial control panels, test instrumentation, and legacy system repair requiring stable component supply and long-term obsolescence management.

Supply support for N74F258AN,602 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

Philips Semiconductors (now NXP Semiconductors) is a European semiconductor pioneer known for high-reliability logic, analog, and RF products serving industrial and automotive markets.

The 74F FAST TTL family-including N74F258AN,602-was engineered for high-speed, low-noise digital systems demanding sub-10 ns propagation and robust fan-out in commercial temperature environments.

FAQ

What logic family does N74F258AN,602 belong to, and is it compatible with other 74F devices?

N74F258AN,602 belongs to the 74F FAST TTL logic family. It is fully compatible with other 74F-series components in terms of voltage thresholds, timing, drive strength, and loading. Its VIL ≤ 0.8 V and VIH ≥ 2.0 V match 74F standards, and its 24 mA IOL ensures reliable interfacing with downstream 74F inputs without additional buffering. N74F258AN,602 shares identical AC/DC specs with the 74F257A non-inverting variant except for output polarity.

Does N74F258AN,602 provide true inverting multiplexer behavior, and how is inversion implemented?

Yes, N74F258AN,602 provides true inverting behavior: both I0n and I1n inputs are inverted before selection, and the selected signal is inverted again at the output stage. This results in double inversion-so a High on I0a yields a High on Ya when S = Low. The logic diagram and function table confirm this behavior, distinguishing it from non-inverting variants like the 74F257A.

What is the maximum operating frequency supported by N74F258AN,602 in a typical data path?

N74F258AN,602 supports data rates up to approximately 80 MHz in practical implementations, based on its 6.0 ns maximum propagation delay (In→Y) and 8.5 ns maximum 3-State enable time. For reliable operation, the minimum pulse width must exceed 10 ns to satisfy setup/hold and transition requirements. System-level timing must also account for PCB trace delays and load capacitance beyond the specified 50 pF test condition.

Can N74F258AN,602 outputs be safely tied together in a wired-OR configuration?

No-N74F258AN,602 outputs must never be tied together unless all but one device is in high-impedance state. The datasheet explicitly warns that overlapping 3-State enable windows will cause excessive current flow exceeding 48 mA absolute maximum rating. Proper system design requires strict sequencing of OE signals or use of external arbitration logic to guarantee only one N74F258AN,602 drives the bus at any time.

Is N74F258AN,602 still in production, and what is its obsolescence status?

N74F258AN,602 is a mature product originally released in 1996 and is no longer in active production by NXP. However, Aetrix Electronics maintains verified legacy stock with full traceability and extended lifecycle support. Each unit undergoes electrical screening per original Philips specification, and we provide documentation confirming conformance to the 1996 Jan 05 product specification for N74F258AN,602.