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Nexperia USA Inc. 74AHC257PW,112
- Part No.:
- 74AHC257PW,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74AHC257PW,112.pdf
- Description:
- IC MULTIPLEXER 4 X 2:1 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,649
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Product details
Overview
74AHC257PW,112 from Nexperia is a quad 2-input CMOS multiplexer with 3-state outputs, designed for data routing and bus isolation in mixed-voltage digital systems. It features overvoltage-tolerant inputs (up to 5.5 V), Schmitt-trigger inputs for noise immunity, non-inverting data path, wide supply range (2.0 V to 5.5 V), and operates across –40 °C to +125 °C. Used in industrial control logic, FPGA I/O expansion, and legacy-to-modern voltage interface bridging.
For engineers reviewing the 74AHC257PW,112 datasheet, 74AHC257PW,112 pinout, 74AHC257PW,112 application, or 74AHC257PW,112 equivalent, key selection criteria include 3-state output timing (tpd ≤ 7.5 ns at VCC = 5.5 V), input level compatibility (CMOS), thermal robustness (125 °C operation), and TSSOP16 package suitability for high-density PCB layouts.
Technical Context
This device implements four independent 2:1 multiplexers sharing a common select line (S) and active-low 3-state enable (OE). Each channel routes either of two inputs (nI0/nI1) to its output (nY) based on S, while OE controls output impedance state (driving or high-Z).
Its CMOS-level input thresholds (VIH ≥ 3.85 V at VCC = 5.5 V; VIL ≤ 1.65 V), balanced propagation delays (tPLH ≈ tPHL), and overvoltage tolerance (inputs withstand 5.5 V regardless of VCC) enable reliable interfacing between 3.3 V and 5 V domains without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 5.5 V - supports single-rail operation across 3.3 V and 5 V logic families |
| Propagation Delay (tpd) | ≤ 7.5 ns at VCC = 5.5 V, CL = 15 pF - enables use in >100 MHz data switching applications |
| Input Thresholds | VIH = 3.85 V, VIL = 1.65 V at VCC = 5.5 V - ensures TTL-compatible recognition with CMOS drive strength |
| Output Drive | ±8 mA at VCC = 4.5 V - sufficient to drive 15 pF loads with <10 ns transitions and fan-out of ≥10 LS-TTL loads |
| Operating Temperature | –40 °C to +125 °C - qualified for extended industrial and under-hood embedded environments |
| Power Dissipation | ICC ≤ 80 μA at VCC = 5.5 V - ultra-low static current enables battery-backed or always-on logic monitoring |
Pinout & Package
TSSOP16 plastic thin shrink small outline package (SOT403-1); 16-pin surface-mount; body width 4.4 mm; 0.65 mm pitch; lead finish matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S) | Common Data Select Input | Single control line selecting source 0 or 1 for all four channels simultaneously |
| 2 (1I0), 3 (1I1), 5 (2I0), 6 (2I1), 11 (3I0), 10 (3I1), 14 (4I0), 13 (4I1) | Data Inputs | Eight total inputs grouped as four pairs; each pair feeds one multiplexer channel |
| 4 (1Y), 7 (2Y), 9 (3Y), 12 (4Y) | Multiplexer Outputs | Four independent 3-state outputs; high-impedance when OE = HIGH |
| 15 (OE) | Output Enable (Active LOW) | Global 3-state control; asserts outputs only when LOW; synchronizes bus release |
| 16 (VCC) | Positive Supply | Primary power rail; powers internal logic and output drivers; tolerant of 5.5 V max |
| 8 (GND) | Ground Reference | Return path for all signals and supply current; decoupling required within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Overvoltage-tolerant inputs | Withstand up to 5.5 V regardless of VCC - eliminates external clamping diodes in mixed-supply systems |
| Schmitt-trigger inputs | Hysteresis ≥ 0.5 V at VCC = 5 V - rejects noise spikes on select and enable lines in electrically noisy environments |
| Non-inverting data path | No polarity inversion between selected input and output - preserves signal integrity for timing-critical control paths |
| Wide temperature range | Specified from –40 °C to +125 °C - supports deployment in automotive engine compartments and industrial PLC backplanes |
| Low dynamic power | CPD = 45 pF (4-output switching) - reduces switching current and EMI in high-frequency multiplexing applications |
Applications
| Industrial PLC I/O Expansion | FPGA Configuration Bus Multiplexing |
|---|---|
Use Scenario: Routing multiple sensor inputs (temperature, pressure, flow) to a shared ADC channel in a programmable logic controller. IC Role / Device Role / Timing Role: Quad 2:1 multiplexer selects among dual-sensor pairs per channel; 3-state outputs prevent bus contention during reconfiguration. Use Value: Reduces PCB trace count by 50% versus discrete routing; enables hot-swappable sensor modules via OE-controlled isolation. |
Use Scenario: Sharing JTAG or configuration pins between multiple FPGA banks on a dense carrier board. IC Role / Device Role / Timing Role: Routes configuration clock, data, and mode signals from a single header to one of four FPGA banks using common S/OE control. Use Value: Eliminates need for four separate connectors; maintains signal integrity with matched tpd across all channels (< ±0.5 ns skew). |
| Legacy Microcontroller Bus Interface | Test Equipment Signal Routing |
Use Scenario: Interfacing a 5 V microcontroller's address/data bus to 3.3 V peripheral ICs (e.g., SPI flash, UART) without level translators. IC Role / Device Role / Timing Role: Acts as voltage-domain translator: 5 V inputs accepted safely, 3.3 V outputs driven cleanly via VCC = 3.3 V supply. Use Value: Achieves bidirectional bus isolation with single device; avoids timing penalties and BOM cost of discrete level-shifting solutions. |
Use Scenario: Dynamically reconfiguring signal paths in automated test equipment (ATE) to route DUT outputs to different measurement instruments. IC Role / Device Role / Timing Role: Enables software-selectable signal routing with sub-10 ns propagation delay and simultaneous 3-state disable for glitch-free path changes. Use Value: Supports <100 ns path reconfiguration latency; high noise immunity prevents false triggering during relay-based switching transitions. |
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 |
|---|---|---|---|
| 74AHCT257PW,112 | TTL-compatible inputs (VIH = 2.0 V min); identical pinout, timing, and package | Better suited for direct connection to 5 V TTL outputs without pull-ups; slightly higher ICC | Select when interfacing legacy 5 V TTL logic; avoid if driving from modern CMOS sources with weak high drive |
| SN74LVC257PWR | Lower VCC range (1.65 V–3.6 V); LVTTL-compatible thresholds; smaller 14-pin TSSOP | Optimized for 1.8 V/3.3 V-only systems; not overvoltage tolerant beyond VCC + 0.5 V | Choose for low-voltage portable designs where 5 V tolerance is unnecessary and space is constrained |
Compared with 74AHCT257PW,112, the 74AHC257PW,112 offers superior noise margin and lower static power but requires stronger high-level drive; versus SN74LVC257PWR, it trades voltage flexibility for robust mixed-supply operation and wider temperature support.
Availability
74AHC257PW,112 is available at Aetrix Electronics and suitable for industrial automation, test instrumentation, and FPGA-based embedded systems requiring stable component supply across extended temperature ranges and mixed-voltage interfaces.
Supply support for 74AHC257PW,112 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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial, automotive, and consumer applications.
The 74AHC series targets high-speed, low-power CMOS logic design with emphasis on voltage flexibility, noise immunity, and robust operation in harsh environments - directly supporting modular system integration and legacy interface bridging.
FAQ
Can the 74AHC257PW,112 operate with VCC = 2.5 V?
Yes. The device is fully specified from 2.0 V to 5.5 V. At VCC = 2.5 V, VIH = 1.75 V min and VIL = 0.75 V max ensure reliable CMOS-level switching, and tpd remains ≤ 12.0 ns (CL = 15 pF), making it suitable for low-voltage portable logic.
What happens if OE is left floating?
OE is an active-low input with no internal pull-up. A floating OE defaults to HIGH due to input leakage current and parasitic coupling, forcing all outputs into high-impedance state. This disables bus driving but may cause unpredictable behavior in noise-prone environments; tie OE to GND or VCC via resistor for deterministic operation.
Is the 74AHC257PW,112 pin-compatible with 74HC257?
Yes - identical pinout and function across SO16 and TSSOP16 packages. However, 74AHC257PW,112 offers improved parameters: faster tpd (7.5 ns vs. 15 ns typical), lower ICC (80 μA vs. 160 μA), and guaranteed operation to +125 °C (vs. +85 °C for standard 74HC).
Does this device support hot insertion?
No. While inputs are overvoltage tolerant, the device lacks hot-swap protection circuitry (e.g., slew-rate limiting, undervoltage lockout). Insertion under power risks transient currents on VCC/GND and potential latch-up if supply sequencing violates recommended operating conditions.
74AHC257PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHC
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Multiplexer
- Circuit:
- 4 x 2:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 8mA, 8mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
74AHC257PW,112 FAQ
1.How can I place an order for 74AHC257PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC257PW,112 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 74AHC257PW,112 reliable?
The price and inventory of 74AHC257PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC257PW,112 is usually 5 days.
3.What payment methods are accepted for 74AHC257PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC257PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC257PW,112?
74AHC257PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC257PW,112 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 74AHC257PW,112?
For technical support, including 74AHC257PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC257PW,112 requirements.
6.How does Aetrix verify that 74AHC257PW,112 is sourced from the original manufacturer or authorized distributors?
All 74AHC257PW,112 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 74AHC257PW,112 meets industry standards.
7.What is the process for return or replacement of 74AHC257PW,112?
All 74AHC257PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC257PW,112, 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 74AHC257PW,112 part is unused and in its original packaging.
Return procedure for 74AHC257PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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