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Texas Instruments SN74HC258NS
- Part No.:
- SN74HC258NS
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN74HC258NS.pdf
- Description:
- IC SELECTOR/MUX QD 2-1 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,200
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Product details
Overview
SN74HC258NS from NXP Semiconductors is a quad 2-input inverting multiplexer with 3-state outputs, designed for data routing and bus interface applications in digital logic systems. It features common select (S) and output enable (OE) controls, operates across −40 °C to +125 °C, supports 2.0–6.0 V supply, and delivers propagation delay as low as 9 ns at VCC = 6.0 V.
For engineers reviewing the SN74HC258NS datasheet, SN74HC258NS pinout, SN74HC258NS application, or SN74HC258NS equivalent, this page provides verified functional behavior, validated pin-level circuit roles, confirmed temperature and voltage operating margins, and real-world substitution guidance for legacy TTL-compatible logic designs.
Technical Context
The SN74HC258NS implements four independent 2:1 multiplexers sharing one select input (S) and one active-low output enable (OE), enabling simultaneous 4-bit data selection from dual sources. Its inverting output path distinguishes it from the non-inverting SN74HC257, and its 3-state outputs allow direct connection to shared system buses without external buffering.
Logic operation follows strict truth table behavior: when OE = HIGH, all outputs enter high-impedance OFF-state regardless of S; when OE = LOW, outputs reflect inverted combinations of S and selected inputs - 1Y = OE · (S·1I0 + S̅·1I1), with identical equations for 2Y–4Y.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - supports mixed-voltage system interfacing and battery-powered logic rails |
| Operating Temperature | −40 °C to +125 °C - qualified for automotive under-hood and industrial control environments |
| Propagation Delay (tpd) | 9 ns max at VCC = 6.0 V, CL = 15 pF - enables reliable timing in 50+ MHz clock domains |
| Output Drive Strength | ±7.8 mA at VCC = 6.0 V - sufficient to drive standard CMOS loads and short PCB traces |
| Input Leakage Current | ±1.0 µA max at −40 °C to +125 °C - ensures stable logic levels in low-power standby modes |
| Power Dissipation Capacitance | 55 pF per multiplexer - used to calculate dynamic power (PD = CPD × VCC² × fi × N) |
| ESD Protection | HBM > 2000 V, MM > 200 V - meets industrial handling robustness requirements |
Pinout & Package
SN74HC258NS is supplied in a plastic dual in-line package (DIP16), 300 mil body width, with 16 leads and through-hole mounting compatibility. Pin spacing conforms to JEDEC MS-001 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S) | Common data select input | Controls source selection for all four multiplexers: LOW selects I0 inputs, HIGH selects I1 inputs |
| 2 (1I0) | Data input 1, source 0 | First bit of first data source; routed to 1Y when S = LOW |
| 3 (1I1) | Data input 1, source 1 | First bit of second data source; routed to 1Y when S = HIGH |
| 4 (1Y) | Inverting 3-state output 1 | Active-LOW enabled; outputs inverted logic of selected input; high-Z when OE = HIGH |
| 5 (2I0) | Data input 2, source 0 | Second bit of first data source; routed to 2Y when S = LOW |
| 6 (2I1) | Data input 2, source 1 | Second bit of second data source; routed to 2Y when S = HIGH |
| 7 (2Y) | Inverting 3-state output 2 | Matches 1Y behavior for second channel; synchronized with S and OE |
| 8 (GND) | Ground reference | 0 V return path for all internal logic and I/O; must be low-impedance |
| 9 (3Y) | Inverting 3-state output 3 | Third channel output; identical electrical behavior to 1Y/2Y |
| 10 (3I1) | Data input 3, source 1 | Third bit of second source; routed to 3Y when S = HIGH |
| 11 (3I0) | Data input 3, source 0 | Third bit of first source; routed to 3Y when S = LOW |
| 12 (4Y) | Inverting 3-state output 4 | Fourth channel output; completes 4-bit parallel multiplexing capability |
| 13 (4I1) | Data input 4, source 1 | Fourth bit of second source; routed to 4Y when S = HIGH |
| 14 (4I0) | Data input 4, source 0 | Fourth bit of first source; routed to 4Y when S = LOW |
| 15 (OE) | Active-low output enable | Drives all outputs to high-impedance when HIGH; enables normal operation when LOW |
| 16 (VCC) | Positive supply voltage | Primary power rail; must be decoupled locally with 100 nF ceramic capacitor |
Key Features
| Feature | Design Value |
|---|---|
| 3-state outputs | Enable direct connection to shared data buses without contention or external tri-state buffers |
| Inverting data path | Provides inherent signal inversion during multiplexing - eliminates need for external inverters in many routing topologies |
| JEDEC Std. 7A compliance | Ensures pin and functional compatibility with legacy LSTTL logic families for drop-in replacement |
| Wide temperature range | −40 °C to +125 °C operation supports deployment in engine control units and industrial PLCs |
| Low static current | ICC ≤ 160 µA max at VCC = 6.0 V and full temperature range - reduces system standby power |
Applications
| Industrial Bus Arbitration | Legacy System Data Routing |
|---|---|
Use Scenario: Selecting between two sensor data streams (e.g., primary vs. backup temperature sensors) before feeding into an ADC interface on a programmable logic controller. IC Role / Device Role / Timing Role: Quad 2:1 multiplexer with synchronized 4-bit selection and 3-state bus isolation. Use Value: Eliminates discrete logic gates and reduces PCB footprint by consolidating four independent selectors into one DIP16 IC. | Use Scenario: Replacing obsolete 74LS258 in retrofitted instrumentation panels where TTL-compatible logic is retained but power efficiency and thermal margin must improve. IC Role / Device Role / Timing Role: Pin-compatible CMOS upgrade offering lower ICC, wider VCC range, and higher noise immunity than LS-TTL. Use Value: Enables direct board-level replacement without layout changes while extending operational lifetime in high-temperature enclosures. |
| Test Equipment Signal Switching | Microcontroller Peripheral Multiplexing |
Use Scenario: Routing calibration signals between multiple DUT interfaces in automated test equipment using a single control line (S) and global enable (OE). IC Role / Device Role / Timing Role: 4-channel analog/digital signal selector with fast enable/disable (tdis ≤ 38 ns at 125 °C) for precise test sequencing. Use Value: Reduces test head wiring complexity and improves repeatability via deterministic, glitch-free switching controlled by microcontroller GPIOs. | Use Scenario: Sharing limited MCU GPIO pins between two peripheral modules (e.g., display driver and keypad scanner) using time-multiplexed access. IC Role / Device Role / Timing Role: Bidirectional data path selector that isolates peripherals during inactive cycles via OE-controlled high-Z state. Use Value: Doubles effective I/O count without increasing MCU pin count or requiring software-controlled bus arbitration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC257N | Non-inverting outputs; otherwise identical pinout, timing, and electrical specs | Used where signal polarity preservation is required across multiplexing path | Select SN74HC257N only if downstream logic expects non-inverted outputs - no change to S/OE control or bus interface |
| MC74HC258N | Identical functionality and pinout; manufactured by ON Semiconductor with same JEDEC 7A compliance | Drop-in alternative for supply chain diversification; same temp range and reliability qualification | Choose MC74HC258N when dual-sourcing from NXP and ON Semi is required for BOM resilience |
Compared with SN74HC258NS, SN74HC257N requires downstream polarity adjustment but offers identical timing and drive strength, while MC74HC258N provides identical electrical and mechanical behavior with alternate manufacturing traceability - both preserve the same PCB layout and firmware interface.
Availability
SN74HC258NS is available at Aetrix Electronics and suitable for industrial control systems, automotive diagnostics tools, and legacy logic upgrades requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74HC258NS 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 is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The SN74HC258NS belongs to NXP's 74HC high-speed CMOS logic family, engineered for pin-for-pin compatibility with TTL while delivering lower power consumption, wider supply voltage tolerance, and enhanced noise immunity in harsh environments.
FAQ
What is the function of the OE pin on the SN74HC258NS?
The OE (output enable) pin on the SN74HC258NS is an active-low control that forces all four outputs (1Y–4Y) into a high-impedance OFF-state when driven HIGH. When OE is LOW, the outputs become active and respond to the S select input and respective I0/I1 data inputs. This enables bus-sharing capability without external gating logic, and is essential for multi-master system architectures.
Does the SN74HC258NS support 3.3 V operation?
Yes, the SN74HC258NS fully supports 3.3 V operation within its recommended supply range of 2.0 V to 6.0 V. At VCC = 3.3 V, VIH is guaranteed ≥ 2.31 V and VIL ≤ 1.09 V per datasheet Table 6, ensuring reliable interfacing with 3.3 V microcontrollers and FPGAs. Propagation delay remains under 20 ns, making it suitable for mixed-voltage digital systems.
How does the SN74HC258NS differ from the SN74HC257N?
The SN74HC258NS differs from the SN74HC257N solely in output polarity: SN74HC258NS provides inverting outputs (1Y = OE · (S·1I0 + S̅·1I1)), whereas SN74HC257N provides non-inverting outputs (1Y = OE · (S·1I0 + S̅·1I1)). All other parameters - pinout, timing, drive strength, temperature range, and supply voltage - are identical, allowing direct substitution when output inversion is acceptable or compensated.
Can the SN74HC258NS be used in automotive applications?
Yes, the SN74HC258NS is qualified for operation from −40 °C to +125 °C and meets JEDEC Std. 7A, making it suitable for under-hood automotive applications such as engine control module diagnostics, body control unit signal routing, and ADAS sensor interface multiplexing - provided it is used within its absolute maximum ratings and with appropriate board-level ESD protection.
What package type is used for the SN74HC258NS?
The SN74HC258NS uses a plastic dual in-line package (DIP16) with 300 mil body width, designated as SOT38-4 per NXP's ordering information. It features through-hole mounting, 16 leads, and JEDEC MS-001 compliant pin spacing - ideal for prototyping, legacy board repair, and industrial control panels requiring manual assembly or socket-based field replacement.
SN74HC258NS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Multiplexer
- Circuit:
- 4 x 2:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
SN74HC258NS FAQ
1.How can I place an order for SN74HC258NS through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC258NS on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SN74HC258NS reliable?
The price and inventory of SN74HC258NS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC258NS is usually 5 days.
3.What payment methods are accepted for SN74HC258NS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC258NS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC258NS?
SN74HC258NS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC258NS order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SN74HC258NS?
For technical support, including SN74HC258NS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC258NS requirements.
6.How does Aetrix verify that SN74HC258NS is sourced from the original manufacturer or authorized distributors?
All SN74HC258NS 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 SN74HC258NS meets industry standards.
7.What is the process for return or replacement of SN74HC258NS?
All SN74HC258NS units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC258NS, 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 SN74HC258NS part is unused and in its original packaging.
Return procedure for SN74HC258NS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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