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NXP Semiconductors N74F258AD,602
- Part No.:
- N74F258AD,602
- Manufacturer:
- NXP Semiconductors
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
N74F258AD,602.pdf
- Description:
- IC MULTIPLEXER 4 X 2:1 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,184
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Product details
Overview
N74F258AD,602 from NXP Semiconductors (formerly Philips) is a quad 2-line to 1-line inverting multiplexer with 3-state outputs, designed for digital signal routing in TTL-compatible systems. It selects four parallel data bits from two input sources (I0n/I1n) under a common Select (S) control, inverts output logic, and enables/disables all outputs via active-low Output Enable (OE). Used in bus arbitration, data path switching, and address/data multiplexing in industrial control logic.
For engineers reviewing the N74F258AD,602 datasheet, N74F258AD,602 pinout, N74F258AD,602 application, or N74F258AD,602 equivalent, key selection considerations include its 3.5 ns typical propagation delay (S→Y), 14 mA typical supply current, inverting output behavior, 3-state drive capability (±24 mA sink/source), and SO16 package compatibility with surface-mount PCB layouts.
Technical Context
The N74F258AD,602 implements four independent 2:1 multiplexers sharing one Select (S) line and one Output Enable (OE) line. Each channel routes either I0n (when S = Low) or I1n (when S = High) to its inverted Yn output, supporting simultaneous 4-bit data selection with single-control simplicity.
All outputs enter high-impedance state when OE is High, enabling wired-OR bus configurations. Input loading is standardized at 1.0 FAST Unit Load (20 µA/0.6 mA), and outputs drive ±24 mA at VCC = 5.0 V, meeting F-series TTL interface requirements across 0°C to +70°C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay (S → Y) | Typical 3.5 ns - ensures minimal timing skew in synchronous data routing paths |
| Supply Current (ICC) | Typical 14 mA - low static power draw suitable for dense logic arrays |
| Output Drive (IOL/IOH) | 24 mA sink / –3 mA source - sufficient to drive multiple TTL loads without buffering |
| Input Voltage Thresholds | VIL ≤ 0.8 V, VIH ≥ 2.0 V - robust noise margin for 5 V TTL signaling |
| Operating Temperature | 0°C to +70°C - commercial-grade reliability for non-automotive embedded systems |
| Output Logic Polarity | Inverting - Yn = NOT(I0n·NOT(S) + I1n·S) - matches legacy system-level inversion requirements |
| 3-State Enable Polarity | Active-Low OE - simplifies enable control using open-collector drivers or microcontroller GPIO |
Pinout & Package
Package: SO16 - plastic small outline, 16-lead, 3.9 mm body width, surface-mount compatible (SOT109-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (Output Enable) | Active-low global enable controlling all four Y outputs' 3-state behavior |
| 2–3, 5–6, 10–11, 13–14 | I0a/I1a, I0b/I1b, I0c/I1c, I0d/I1d | Eight data inputs - two per multiplexer channel, defining source selection pairs |
| 4, 7, 9, 12 | Ya, Yb, Yc, Yd | Inverted 3-state outputs - each reflects selected I0n or I1n, inverted, with high-Z when OE = High |
| 8 | GND | Ground reference for all logic and power domains |
| 15 | S (Select) | Common control selecting I0n (S = Low) or I1n (S = High) across all four channels |
| 16 | VCC | +5 V supply - must be decoupled locally due to fast switching transients |
Key Features
| Feature | Design Value |
|---|---|
| Quad 2:1 Multiplexing | Four independent channels share one Select and one OE line - reduces control wiring and simplifies PCB routing |
| Inverting Output Logic | Eliminates need for external inverters in systems requiring complemented data paths |
| 3-State Outputs | Enables direct connection to shared buses without contention - critical for backplane and memory-mapped I/O designs |
| F-Series Speed | 3.5 ns typical S→Y delay - supports >100 MHz clock-domain interfacing in high-speed digital logic |
| TTL-Compatible Interface | Meets standard 74F input/output voltage and current specs - ensures drop-in replacement in legacy 74xx-based systems |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Arbitration |
|---|---|
|
Use Scenario: Routing sensor data from dual analog front-ends to a single ADC interface in programmable logic controllers. IC Role / Device Role / Timing Role: Quad multiplexer selecting between redundant signal sources while maintaining channel synchronization via shared S and OE. Use Value: Reduces component count vs. discrete gate solutions and avoids timing skew from separate select lines. |
Use Scenario: Managing access to a shared memory bus among multiple microcontrollers in an embedded control chassis. IC Role / Device Role / Timing Role: Enabling/disabling data paths using OE to prevent bus contention during master handoff. Use Value: 3-state outputs allow safe wired-OR configuration without external bus transceivers. |
| Digital Test Equipment Signal Switching | Address/Data Multiplexing in 8-bit Systems |
|
Use Scenario: Switching calibration reference signals into DUT test ports under microcontroller command in automated test fixtures. IC Role / Device Role / Timing Role: Inverting multiplexer providing precise, low-skew signal routing with deterministic polarity. Use Value: 3.5 ns propagation delay ensures sub-cycle timing alignment for high-repetition test patterns. |
Use Scenario: Combining address and data lines onto shared pins in 8080/8085-based systems to reduce pin count on microprocessor sockets. IC Role / Device Role / Timing Role: Time-multiplexed data path controller synchronizing with ALE or control strobes. Use Value: Inverting logic matches native bus timing waveforms, eliminating post-mux level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2:1 inverting multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74F258N | DIP-16 package; identical AC/DC specs and pinout; no SO variant | Through-hole assembly only; unsuitable for space-constrained SMT designs | Select when manual prototyping or legacy through-hole production is required |
| 74ACT258SCX | Advanced CMOS; 5 V tolerant; 3.2 ns max tPHL; lower ICC (4 mA typ); non-inverting output | Requires external inverter if system demands inverted output; higher noise immunity | Choose for lower power and faster edge rates where output polarity can be adjusted |
Compared with SN74F258N and 74ACT258SCX, the N74F258AD,602 uniquely balances SO16 surface-mount compatibility, guaranteed inverting output, and proven F-series timing - making it optimal for upgrading legacy 74F designs without layout or logic redesign.
Availability
N74F258AD,602 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy bus arbitration, and digital test equipment signal switching requiring stable component supply and long-term obsolescence management.
Supply support for N74F258AD,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
NXP Semiconductors, formerly Philips Semiconductors, is a global leader in high-performance mixed-signal ICs, with core expertise in automotive, industrial, and secure connectivity solutions.
The 74F logic family - including the N74F258AD,602 - was engineered for high-speed, low-power TTL-compatible digital systems in the 1990s, targeting industrial control, instrumentation, and computer peripheral applications.
FAQ
What is the logic function implemented by the N74F258AD,602?
The N74F258AD,602 implements four independent 2:1 inverting multiplexers. For each channel n, the output Yn = NOT[I0n·NOT(S) + I1n·S], meaning I0n is selected when S is Low and I1n when S is High, with inversion applied before output. This matches the IEEE/IEC logic symbol and truth table in the original Philips specification.
Does the N74F258AD,602 support 3.3 V operation?
No, the N74F258AD,602 is specified only for VCC = 4.5 V to 5.5 V. Its input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and output drive characteristics are optimized for 5 V TTL systems. Operating below 4.5 V may cause unreliable switching or increased propagation delay, and is outside the recommended conditions defined in the Philips datasheet.
How does the Output Enable (OE) pin behave on the N74F258AD,602?
The OE pin on the N74F258AD,602 is active-low: when OE = High, all four outputs (Ya–Yd) enter high-impedance state regardless of S or input states; when OE = Low, outputs respond normally to S and data inputs. This allows safe bus sharing and eliminates contention in multi-driver systems - a key design feature confirmed in the function table and logic diagram.
Is the N74F258AD,602 pin-compatible with the non-inverting 74F257A?
No, the N74F258AD,602 is not pin-compatible with the 74F257A. Although both are quad 2:1 multiplexers in SO16 packages, their pin assignments differ: the 74F257A places Ya on pin 3 and Yb on pin 4, whereas the N74F258AD,602 places Ya on pin 4 and Yb on pin 7. The datasheet explicitly notes "See 74F257A for non-inverting version" but confirms distinct pinouts.
What is the maximum output short-circuit current rating for the N74F258AD,602?
The N74F258AD,602 has a short-circuit output current (IOS) rating of –60 mA to –150 mA (min to max) under VCC = MAX, with the datasheet cautioning that no more than one output should be shorted at a time. This rating reflects worst-case internal driver strength and thermal limits - consistent across all Y outputs and verified in the AC/DC electrical characteristics section.
N74F258AD,602 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74F
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Multiplexer
- Circuit:
- 4 x 2:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 3mA, 24mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
N74F258AD,602 FAQ
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6.How does Aetrix verify that N74F258AD,602 is sourced from the original manufacturer or authorized distributors?
All N74F258AD,602 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that N74F258AD,602 meets industry standards.
7.What is the process for return or replacement of N74F258AD,602?
All N74F258AD,602 units undergo pre-shipment inspection (PSI). If there is an issue with N74F258AD,602, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The N74F258AD,602 part is unused and in its original packaging.
Return procedure for N74F258AD,602:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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