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Nexperia USA Inc. 74HC251PW,118
- Part No.:
- 74HC251PW,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HC251PW,118.pdf
- Description:
- IC MULTIPLEXER 1 X 8:1 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,607
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Product details
Overview
74HC251PW,118 from Nexperia is an 8-input CMOS multiplexer with complementary outputs (Y and Y), three binary select lines (S0–S2), and active-low 3-state output enable (OE). It operates from 2.0 V to 6.0 V, delivers propagation delay as low as 14 ns at VCC = 6.0 V, and supports industrial temperature range (−40 °C to +125 °C). It is used in digital logic routing, data selector circuits, and address/data bus management in embedded controllers.
For engineers reviewing the 74HC251PW,118 datasheet, 74HC251PW,118 pinout, 74HC251PW,118 application, or 74HC251PW,118 equivalent, key selection considerations include input voltage compatibility (CMOS-level), 3-state output timing (enable/disable times ≤ 42 ns), TSSOP16 package thermal derating (8.5 mW/K above 91 °C), and static drive capability (IO = ±4.0 mA at VCC = 4.5 V).
Technical Context
The 74HC251PW,118 implements a non-inverting 8:1 multiplexer function using standard CMOS logic. Its select inputs S0–S2 decode binary addresses to route one of eight data inputs (I0–I7) to complementary outputs Y/Y, while OE controls high-impedance state on both outputs simultaneously.
It features input clamp diodes for overvoltage tolerance, meets JESD7A (2.0–6.0 V) and JESD8C (2.7–3.6 V) standards, and provides ESD protection per HBM (>2000 V) and CDM (>1000 V). Static parameters are specified across −40 °C to +125 °C with VIH = 3.15 V (min) and VOL = 0.26 V (max) at VCC = 4.5 V and IO = 4.0 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - Enables direct interface with 3.3 V and 5 V logic systems without level translation. |
| Propagation Delay (tpd) | 14 ns (max) at VCC = 6.0 V, CL = 50 pF - Supports >35 MHz switching in critical data-path applications. |
| Output Drive Strength | ±4.0 mA at VCC = 4.5 V - Sufficient to drive 10 LSTTL loads or moderate PCB trace capacitance. |
| Input Thresholds (VIH/VIL) | VIH = 3.15 V min, VIL = 1.35 V max at VCC = 4.5 V - Ensures robust noise margin (>1.8 V) in noisy industrial environments. |
| Operating Temperature | −40 °C to +125 °C - Qualified for under-hood automotive modules and industrial motor control enclosures. |
| Power Dissipation Capacitance | CPD = 44 pF - Enables accurate dynamic power estimation: PD = CPD × VCC² × fi × N. |
| ESD Robustness | HBM > 2000 V, CDM > 1000 V - Reduces field failure risk during manual handling and board assembly. |
Pinout & Package
TSSOP16 plastic thin shrink small outline package (SOT403-1); 16-pin, 4.4 mm body width, 0.65 mm pitch; optimized for high-density PCB layouts and automated reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 12, 13, 14, 15 | I0–I7 | Eight independent data inputs; each accepts CMOS-level signals and includes clamp diodes for overvoltage resilience. |
| 5 | Y | Inverted output - mirrors selected input with complementary polarity; enables differential signaling or logic inversion. |
| 6 | Y | Non-inverted output - directly passes selected input; used for single-ended bus routing or fanout buffering. |
| 7 | OE | Active-low output enable - asserts high-impedance state on both Y and Y when HIGH; synchronizes bus sharing. |
| 8 | GND | Ground reference - must be connected to system 0 V plane; decoupling capacitor required within 5 mm. |
| 9, 10, 11 | S2, S1, S0 | Binary select lines - encode 0–7 to choose I0–I7; synchronous with clock edge in registered designs. |
| 16 | VCC | Positive supply - requires local 100 nF ceramic decoupling; voltage ripple must stay within ±50 mV. |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range (2.0–6.0 V) | Eliminates need for separate voltage regulators in mixed-supply systems (e.g., 3.3 V MCU + 5 V peripherals). |
| Complementary Y/Y outputs | Enables direct connection to differential receivers or simplifies logic inversion without external gates. |
| Clamp diode–protected inputs | Allows safe interfacing to signals up to VCC + 0.5 V, reducing need for external current-limiting resistors. |
| Latch-up immunity >100 mA | Meets JESD78 Class II Level B - prevents destructive latch-up during transient overvoltage events. |
| High noise immunity | Guaranteed 40 % VCC noise margin at VCC = 4.5 V - ensures reliable operation in electrically noisy factory floors. |
Applications
| Industrial PLC I/O Expansion | Digital Audio Signal Routing |
|---|---|
|
Use Scenario: Multiplexing 8 analog sensor channels into a single ADC input on a programmable logic controller. IC Role / Device Role / Timing Role: Data selector enabling time-division sampling; OE synchronized to ADC conversion start pulse. Use Value: Reduces component count vs. discrete analog switches; maintains signal integrity with <0.4 V VOL at 4 mA drive. |
Use Scenario: Switching between eight digital audio sources (e.g., SPDIF, I²S, USB-Audio) to a single DAC. IC Role / Device Role / Timing Role: Digital bus multiplexer; S0–S2 controlled by microcontroller GPIO; Y/Y outputs feed DAC input stage. Use Value: Eliminates need for glue logic; 14 ns tpd ensures sub-cycle latency in 24-bit/192 kHz audio paths. |
| Embedded Microcontroller Address Decoding | Test Equipment Signal Path Selection |
|
Use Scenario: Selecting one of eight peripheral memory-mapped devices (e.g., EEPROM, UART, GPIO expander) via address lines. IC Role / Device Role / Timing Role: Address decoder front-end; OE tied to chip-select strobe; S0–S2 driven by LSBs of address bus. Use Value: Provides deterministic 3-state isolation between peripherals; VIH = 3.15 V ensures compatibility with 3.3 V MCU outputs. |
Use Scenario: Configuring signal routing inside automated test equipment (ATE) to connect DUT pins to measurement instruments. IC Role / Device Role / Timing Role: Reconfigurable signal path switch; OE controlled by FPGA for glitch-free path changes. Use Value: Enables <42 ns enable/disable transitions - critical for high-throughput parametric testing with minimal dead time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-input multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC251D,653 | SO16 package (SOT109-1); 3.9 mm body width; higher thermal resistance (12.4 mW/K derating above 110 °C). | Better suited for through-hole prototyping or legacy SOIC footprints; lower pin density than TSSOP. | Select when board space allows larger footprint or when hand-soldering is required. |
| SN74HC251N | PDIP-16 package; no surface-mount thermal performance; not qualified for −40 °C to +125 °C operation. | Limited to commercial temperature range (0 °C to +70 °C); unsuitable for automotive or industrial deployments. | Choose only for lab evaluation or non-critical consumer-grade prototypes. |
Compared with 74HC251PW,118, the SO16 variant offers easier rework but sacrifices board area and thermal efficiency, while the PDIP version lacks extended temperature qualification and surface-mount reliability - making the TSSOP16 the optimal choice for production-grade industrial designs.
Availability
74HC251PW,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, embedded microcontroller address decoding, and automated test equipment signal routing requiring stable component supply across extended temperature ranges and high-volume manufacturing cycles.
Supply support for 74HC251PW,118 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 focused on essential semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer applications.
The 74HC251PW,118 belongs to Nexperia's 74HC logic family, designed specifically for low-power, high-noise-immunity digital signal routing in space-constrained and thermally demanding environments.
FAQ
Can 74HC251PW,118 operate reliably at 2.0 V supply?
Yes. The device is fully specified down to 2.0 V: VIH = 1.5 V (min), VOL = 0.5 V (max) at IO = 0.5 mA, and tpd = 170 ns (max) at CL = 50 pF. This enables use in battery-powered systems where supply voltage drops below 3.0 V during discharge.
What is the maximum capacitive load the Y/Y outputs can drive?
The outputs are characterized up to CL = 50 pF in dynamic tests, with transition time tt = 13 ns (typ) at VCC = 6.0 V. Driving >50 pF increases propagation delay and may cause ringing; for >100 pF loads, add series termination or buffer stages per layout simulation.
Is the 74HC251PW,118 pin-compatible with 74HCT251PW?
Yes - identical pinout and package (TSSOP16), but input thresholds differ: 74HC251PW accepts CMOS-level inputs (VIH ≥ 0.7×VCC), while 74HCT251PW accepts TTL-level inputs (VIH ≥ 2.0 V). Interchangeability requires verifying source logic family compatibility.
Does OE affect both Y and Y outputs simultaneously?
Yes. OE is a common enable for both complementary outputs: when OE = HIGH, both Y and Y enter high-impedance (Z) state regardless of select or input states. This ensures clean bus release in multi-device shared-bus configurations.
74HC251PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Multiplexer
- Circuit:
- 1 x 8:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
74HC251PW,118 FAQ
1.How can I place an order for 74HC251PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC251PW,118 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 74HC251PW,118 reliable?
The price and inventory of 74HC251PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC251PW,118 is usually 5 days.
3.What payment methods are accepted for 74HC251PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC251PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC251PW,118?
74HC251PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC251PW,118 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 74HC251PW,118?
For technical support, including 74HC251PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC251PW,118 requirements.
6.How does Aetrix verify that 74HC251PW,118 is sourced from the original manufacturer or authorized distributors?
All 74HC251PW,118 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 74HC251PW,118 meets industry standards.
7.What is the process for return or replacement of 74HC251PW,118?
All 74HC251PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC251PW,118, 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 74HC251PW,118 part is unused and in its original packaging.
Return procedure for 74HC251PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC251PW,118 Tags
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