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Texas Instruments SN74HC258NSR
- Part No.:
- SN74HC258NSR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN74HC258NSR.pdf
- Description:
- IC MULTIPLEXER 4 X 2:1 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,414
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Product details
Overview
SN74HC258NSR from Texas Instruments is a quadruple 2-line to 1-line inverting data selector/multiplexer with 3-state outputs, operating from 2 V to 6 V supply, delivering 12 ns typical propagation delay at 4.5 V, ±6 mA output drive at 5 V, and low 80 µA max ICC. It enables bus interface from dual 4-bit sources in industrial control and digital logic systems.
For engineers reviewing the SN74HC258NSR datasheet, SN74HC258NSR pinout, SN74HC258NSR application, or SN74HC258NSR equivalent, this page provides verified functional modes, confirmed SO package dimensions (6.20 mm × 5.30 mm), real-world timing behavior under 50 pF load, and validated alternative options for multiplexer-based signal routing designs.
Technical Context
The SN74HC258NSR implements four independent 2:1 multiplexers sharing common address (A/B) and active-low enable (G) inputs. Each channel selects between two input signals and delivers an inverted output, with all outputs entering high-impedance state when G is high.
Its logic function follows a defined truth table where output Y = NOT[(A·B̅)+(A̅·B)] when G is low, supporting synchronous data routing in bus arbitration and signal conditioning applications requiring inversion and tri-state control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - supports mixed-voltage system interfacing and battery-powered operation down to 2 V |
| Propagation Delay (tpd) | 12 ns typical at VCC = 4.5 V, CL = 50 pF - enables reliable operation in 40+ MHz digital control loops |
| Output Drive | ±6 mA at 5 V - sufficient to directly drive 15 LSTTL loads without buffering |
| Quiescent Current (ICC) | 80 µA max at 6 V - minimizes standby power in always-on embedded subsystems |
| Input Leakage Current | 1 µA max - ensures stable logic levels with high-impedance source interfaces |
| Enable/Disable Time | 15 ns typical ten/tdis at 4.5 V - supports fast bus turnaround in time-critical arbitration |
| Power Dissipation Capacitance | 40 pF per multiplexer - used to calculate dynamic power in clocked applications |
Pinout & Package
SOP (NS) package, 16-pin, body size 6.20 mm × 5.30 mm, 1.27 mm pitch, 2.00 mm max height, RoHS-compliant NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 9, 10, 12, 13 | Data Inputs (A0–A3, B0–B3) | Two parallel 4-bit input buses; each pair feeds one multiplexer channel |
| 3, 6, 11, 14 | Inverted Outputs (Y0–Y3) | Active-low selected data; high-impedance when G = HIGH |
| 7 | GND | Ground reference for all logic and output stages |
| 8 | VCC | Primary power supply (2–6 V); requires local 0.1 µF bypass capacitor |
| 15 | A/B | Common address select: LOW selects A-inputs, HIGH selects B-inputs |
| 16 | G | Active-low output enable: HIGH forces all Y outputs to high-impedance |
Key Features
| Feature | Design Value |
|---|---|
| Inverting 2:1 Multiplexer Function | Each of four channels outputs NOT[(A·B̅)+(A̅·B)], enabling direct integration into complement-sensitive logic paths |
| 3-State Output Control | Single active-low G input disables all outputs simultaneously, eliminating bus contention in shared-data systems |
| Wide Supply Range Compatibility | Operates across 2–6 V, allowing interoperability with 3.3 V microcontrollers and 5 V legacy peripherals |
| Low Dynamic Power Consumption | 40 pF power dissipation capacitance per channel enables predictable energy use in battery-constrained devices |
| High Noise Immunity | Input thresholds scale with VCC (VIH = 0.7×VCC min, VIL = 0.3×VCC max), ensuring robust operation across voltage rails |
Applications
| Industrial PLC I/O Expansion | Digital Audio Signal Routing |
|---|---|
Use Scenario: Expanding discrete input capability in programmable logic controllers by multiplexing multiple sensor banks onto a single microcontroller port. IC Role / Device Role / Timing Role: SN74HC258NSR acts as a 4-channel 2:1 bus selector, routing either primary or backup sensor data based on A/B control, with G synchronized to scan cycle. Use Value: Reduces GPIO count by 50% while maintaining dual-source redundancy and deterministic 12 ns switching latency. | Use Scenario: Switching between stereo left/right audio data streams in digital mixing consoles before DAC conversion. IC Role / Device Role / Timing Role: SN74HC258NSR serves as a quad inverting multiplexer, selecting alternate PCM frames with precise edge-aligned timing controlled by FPGA-generated A/B and G signals. Use Value: Enables glitch-free channel swapping using 3-state isolation and sub-15 ns enable/disable transitions. |
| Test Equipment Signal Conditioning | Legacy System Bus Interface |
Use Scenario: Isolating and selecting calibration reference signals versus live DUT outputs in automated test equipment front-ends. IC Role / Device Role / Timing Role: SN74HC258NSR functions as a controlled analog-digital signal gate, where inverted outputs interface with comparator inputs and G enables safe signal disconnect during reconfiguration. Use Value: Prevents signal injection during switching via guaranteed high-Z state and eliminates need for external analog switches. | Use Scenario: Adapting 8-bit data from two legacy peripheral modules (e.g., EPROM and RAM) onto a shared microprocessor data bus. IC Role / Device Role / Timing Role: SN74HC258NSR operates as a 4-bit-wide 2:1 bus selector, with A/B tied to address lines and G driven by memory select logic to avoid bus conflicts. Use Value: Provides hardware-level bus arbitration without software overhead, leveraging 6 mA drive strength to meet TTL loading requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2:1 multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC257NSR | Non-inverting outputs; identical pinout, timing, and electrical specs except output polarity | Required where signal inversion would disrupt downstream logic states or timing margins | Select SN74HC257NSR when system design mandates true (non-inverted) data path; otherwise SN74HC258NSR is optimal for complemented routing |
| 74LVC257APW | Lower 1.65–5.5 V supply range; 3.3 V optimized; 5.5 ns tpd at 3.3 V; different pinout (TSSOP-16 only) | Better suited for modern low-voltage FPGAs and ARM-based controllers; not drop-in compatible due to pin assignment mismatch | Choose 74LVC257APW for new 3.3 V designs prioritizing speed and voltage compatibility; SN74HC258NSR remains preferred for 5 V or mixed-rail legacy integration |
Compared with SN74HC257NSR and 74LVC257APW, the SN74HC258NSR uniquely delivers inverting logic in a widely available SOP package with proven 2–6 V interoperability-making it the most suitable choice for industrial bus arbitration where polarity alignment and voltage flexibility are critical.
Availability
SN74HC258NSR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, digital audio signal routing, test equipment signal conditioning, and legacy system bus interface requiring stable component supply across extended temperature ranges (−40°C to +85°C).
Supply support for SN74HC258NSR 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic ICs, with over 50 years of innovation in high-reliability digital logic families.
The SN74HC258NSR belongs to TI's 74HC high-speed CMOS logic series, designed specifically for robust, low-power signal routing in industrial automation, instrumentation, and mixed-voltage digital systems.
FAQ
What is the logic function of SN74HC258NSR?
The SN74HC258NSR implements four independent inverting 2:1 multiplexers. For each channel, output Y = NOT[(A·B̅)+(A̅·B)] when G is low; all outputs go high-impedance when G is high. This matches the truth table in TI's SCLS224C datasheet Section 7.3, confirming its role as a quad inverting data selector with tri-state capability.
Does SN74HC258NSR support 3.3 V operation?
Yes, SN74HC258NSR supports 3.3 V operation within its specified 2 V to 6 V supply range. At VCC = 3.3 V, it meets recommended operating conditions: VIH ≥ 2.31 V, VIL ≤ 0.99 V, and delivers typical tpd ≈ 15 ns (interpolated from 2 V and 4.5 V data in Section 5.5), making it fully compatible with 3.3 V logic systems.
What package type is SN74HC258NSR supplied in?
SN74HC258NSR is supplied in the SOP (NS) package: 16-pin, body size 6.20 mm × 5.30 mm, 1.27 mm pitch, 2.00 mm max height, RoHS-compliant NIPDAU lead finish, and MSL Level-1 rating per TI's PACKAGE OPTION ADDENDUM.
How does SN74HC258NSR differ from SN74HC257NSR?
SN74HC258NSR has inverted outputs, while SN74HC257NSR has non-inverted outputs; all other specifications-including pinout, timing, supply range, and 3-state behavior-are identical. The functional difference is explicitly stated in TI's datasheet Section 2: "The '257 has non-inverted outputs and the '258 has inverted outputs."
Can SN74HC258NSR drive standard TTL loads?
Yes, SN74HC258NSR can drive up to 15 LSTTL loads, as confirmed in the Features section of TI's datasheet. Its ±6 mA output drive at 5 V exceeds the −0.4 mA / +1.6 mA requirements of LSTTL inputs, ensuring reliable interfacing without external buffers in legacy TTL environments.
SN74HC258NSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
SN74HC258NSR FAQ
1.How can I place an order for SN74HC258NSR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC258NSR 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 SN74HC258NSR reliable?
The price and inventory of SN74HC258NSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC258NSR is usually 5 days.
3.What payment methods are accepted for SN74HC258NSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC258NSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC258NSR?
SN74HC258NSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC258NSR 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 SN74HC258NSR?
For technical support, including SN74HC258NSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC258NSR requirements.
6.How does Aetrix verify that SN74HC258NSR is sourced from the original manufacturer or authorized distributors?
All SN74HC258NSR 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 SN74HC258NSR meets industry standards.
7.What is the process for return or replacement of SN74HC258NSR?
All SN74HC258NSR units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC258NSR, 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 SN74HC258NSR part is unused and in its original packaging.
Return procedure for SN74HC258NSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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