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Nexperia USA Inc. 74AHC157PW,118
- Part No.:
- 74AHC157PW,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74AHC157PW,118.pdf
- Description:
- IC MULTIPLEXER 4 X 2:1 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,027
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Product details
Overview
74AHC157PW,118 from Nexperia is a quad 2-input CMOS multiplexer with active-low enable (E), common data select (S), and four independent 2:1 data paths (1Y–4Y). It operates from 2.0 V to 5.5 V, delivers propagation delays as low as 3.2 ns (VCC = 5 V, CL = 15 pF), and supports industrial temperature range (−40 °C to +125 °C) in TSSOP16 package. It is used for bus selection, register-to-bus data routing, and logic function generation in digital control systems.
For engineers reviewing the 74AHC157PW,118 datasheet, 74AHC157PW,118 pinout, 74AHC157PW,118 application, or 74AHC157PW,118 equivalent, key selection criteria include supply voltage compatibility (CMOS-level inputs), enable polarity, propagation delay vs. load capacitance, thermal performance in TSSOP16, and functional equivalence to legacy 74LS157 in mixed-logic systems.
Technical Context
The 74AHC157PW,118 implements four independent 2:1 multiplexers sharing one select (S) and one active-low enable (E) input. Each output (1Y–4Y) follows Y = E̅ × (I₁ × S + I₀ × S̅), enabling simultaneous 4-bit data routing from two parallel sources. Its Schmitt-trigger inputs tolerate slow-rising signals and reject noise on S and E lines.
Designed for high-speed digital interfacing, it features balanced tPLH/tPHL propagation delays, TTL-compatible output drive (±8 mA at VCC = 4.5 V), and input voltage tolerance up to 7.0 V - allowing safe interfacing with higher-voltage logic domains without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 2.0 V to 5.5 V - supports dual-rail systems and battery-backed 3.3 V logic without regulator dependency. |
| Propagation Delay (tpd) | 3.2 ns (typ, VCC = 5 V, CL = 15 pF) - enables sub-100 MHz data switching in synchronous bus architectures. |
| Output Drive Current | ±8 mA (VOH/VOL @ VCC = 4.5 V) - directly drives standard CMOS loads and small LED indicators without buffer stages. |
| Input Voltage Range | −0.5 V to +7.0 V - permits hot-swap and overvoltage-tolerant interface with legacy 5 V or 12 V subsystems. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive ECUs, industrial PLC I/O modules, and power supply controllers. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - ensures robustness during PCB handling and field deployment in unshielded environments. |
| Power Dissipation (Ptot) | 500 mW (Tamb ≤ 91 °C, TSSOP16) - allows sustained operation in compact enclosures with minimal heatsinking. |
Pinout & Package
TSSOP16 plastic thin shrink small outline package (SOT403-1), 16-pin, body width 4.4 mm, 0.65 mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | S (Select) | Common 2:1 data path selector - HIGH routes I1, LOW routes I0 to all outputs. |
| 2, 5, 11, 14 | 1I0, 2I0, 3I0, 4I0 | Data inputs from source 0 - synchronized 4-bit parallel lane for primary data stream. |
| 3, 6, 10, 13 | 1I1, 2I1, 3I1, 4I1 | Data inputs from source 1 - secondary 4-bit lane, selected when S = HIGH. |
| 4, 7, 9, 12 | 1Y, 2Y, 3Y, 4Y | Multiplexer outputs - actively driven, rail-to-rail CMOS outputs with defined VOL/VOH. |
| 8 | GND | Digital ground reference - must be low-impedance connection to minimize switching noise coupling. |
| 15 | E (Enable) | Active-low global enable - HIGH forces all outputs LOW, enabling bus contention avoidance. |
| 16 | VCC | Positive supply - decoupling capacitor (100 nF ceramic) required within 5 mm of pin for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables reliable operation with slow or noisy control signals (S, E), eliminating need for external RC filtering. |
| CMOS input level compatibility | VIH = 3.85 V (min, VCC = 5.5 V), VIL = 1.65 V (max) - ensures clean logic thresholds across full VCC range without external biasing. |
| Balanced propagation delays | tPLH and tPHL match within ±0.5 ns - critical for skew-sensitive applications like parallel bus arbitration and clock domain crossing. |
| Multiple package options | TSSOP16 (74AHC157PW), SO16 (74AHC157D), DHVQFN16 (74AHC157BQ) - supports layout flexibility from cost-sensitive through-hole to space-constrained high-density designs. |
| Wide temperature qualification | Specified from −40 °C to +125 °C - validated for use in automotive engine control units and industrial motor drives without derating. |
Applications
| Bus Multiplexing | Register File Selection |
|---|---|
|
Use Scenario: Selecting between two 4-bit data buses (e.g., CPU ALU output and memory data bus) feeding a single 4-bit latch or arithmetic unit. IC Role / Device Role / Timing Role: Quad 2:1 data selector with synchronous enable - provides deterministic 4-bit path isolation and timing-controlled bus arbitration. Use Value: Eliminates need for four discrete 2:1 mux ICs, reducing BOM count by 75% and interconnect skew by consolidating control lines (S, E). |
Use Scenario: Routing data from two sets of 4-bit registers (e.g., accumulator and temporary register bank) into a shared ALU input port. IC Role / Device Role / Timing Role: Parallel data switch with common select - enables zero-cycle register bank switching under microcode control. Use Value: Achieves 4-bit register file access in one clock cycle using only two control signals (S, E), minimizing state machine complexity. |
| Logic Function Generation | Memory Chip Select Decoding |
|
Use Scenario: Implementing arbitrary 2-variable Boolean functions (e.g., XOR, NAND, OR) across four independent outputs using fixed I0/I1 patterns and dynamic S. IC Role / Device Role / Timing Role: Programmable 2-input function generator - leverages internal multiplexer structure to synthesize combinational logic without LUTs. Use Value: Reduces gate count in glue logic by replacing up to eight 2-input gates with one IC, lowering propagation delay and power per function. |
Use Scenario: Generating chip select (CS) signals for four memory devices (e.g., SRAM, EEPROM, flash) based on address bits A1:A0 and a master enable. IC Role / Device Role / Timing Role: Address decoder with gated enable - maps 2-bit address to 4-output decode while E blocks all CS asserts during reset or standby. Use Value: Provides glitch-free, enable-synchronized memory selection with built-in bus contention prevention via E-driven output disable. |
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 |
|---|---|---|---|
| 74AHCT157PW,118 | TTL-compatible inputs (VIH = 2.0 V min), identical pinout and timing - requires 4.5–5.5 V supply for guaranteed TTL threshold compliance. | Preferred in mixed 5 V TTL/CMOS systems where input noise immunity is less critical than legacy compatibility. | Select when interfacing with 74LS/74F logic families; avoid below 4.5 V supply due to VIH degradation. |
| SN74LV157APWR | TI LV family: lower VCC range (2.0–5.5 V), slightly higher tpd (4.5 ns typ), same pinout - no Schmitt-trigger inputs. | Suitable for low-power portable systems where input slew rate is controlled, but unsuitable for noisy industrial control lines. | Choose for TI-design ecosystems or when Schmitt-trigger functionality is unnecessary and BOM consolidation with other LV parts is prioritized. |
Compared with 74AHCT157PW,118, the 74AHC157PW,118 offers superior noise immunity and wider input voltage tolerance, while SN74LV157APWR trades Schmitt-trigger robustness for tighter process variation control - making the AHC variant optimal for harsh industrial signal environments.
Availability
74AHC157PW,118 is available at Aetrix Electronics and suitable for industrial control interfaces, embedded microcontroller peripheral expansion, and digital test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHC157PW,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 specializing in high-performance, energy-efficient logic, analog, and discrete components for automotive, industrial, and consumer markets.
The 74AHC157PW,118 belongs to Nexperia's AHC logic family - engineered for high-speed, low-power CMOS operation with robust noise immunity and wide supply voltage flexibility in space-constrained applications.
FAQ
What is the maximum clock frequency supported by the 74AHC157PW,118?
The 74AHC157PW,118 does not operate on a clock; it is asynchronous. Its usable data switching rate depends on propagation delay and load capacitance. With CL = 15 pF and VCC = 5 V, tpd = 3.2 ns (typ), supporting reliable data rates up to ~150 MHz in non-critical timing paths. For synchronous systems, setup/hold margins must be verified against controller timing.
Can the 74AHC157PW,118 interface directly with 3.3 V microcontrollers and 5 V peripherals?
Yes. Its inputs accept voltages up to 7.0 V, allowing direct connection to 5 V peripherals without level shifters. Outputs swing rail-to-rail (0 V to VCC), so with VCC = 3.3 V, it drives 3.3 V logic reliably. Ensure VCC is set to the target system voltage - mixing supplies invalidates VOH/VOL specs.
Is the exposed pad on the TSSOP16 package electrically connected?
No. The exposed pad in SOT403-1 (TSSOP16) is a mechanical thermal enhancement feature only. Per Nexperia documentation, it has no electrical function and must remain floating or be connected to GND solely for thermal conduction - no electrical tie is required or recommended.
Does the 74AHC157PW,118 support hot insertion or live swapping?
No. While its inputs tolerate overvoltage, the device lacks hot-swap protection circuitry (e.g., power-on reset, I²C-style bus arbitration). Applying VCC before GND or inserting while powered risks latch-up or ESD damage. Always power-cycle the board before replacement in field-deployed systems.
74AHC157PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHC
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
74AHC157PW,118 FAQ
1.How can I place an order for 74AHC157PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC157PW,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 74AHC157PW,118 reliable?
The price and inventory of 74AHC157PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC157PW,118 is usually 5 days.
3.What payment methods are accepted for 74AHC157PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC157PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC157PW,118?
74AHC157PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC157PW,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 74AHC157PW,118?
For technical support, including 74AHC157PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC157PW,118 requirements.
6.How does Aetrix verify that 74AHC157PW,118 is sourced from the original manufacturer or authorized distributors?
All 74AHC157PW,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 74AHC157PW,118 meets industry standards.
7.What is the process for return or replacement of 74AHC157PW,118?
All 74AHC157PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC157PW,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 74AHC157PW,118 part is unused and in its original packaging.
Return procedure for 74AHC157PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AHC157PW,118 Tags
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TC7SB3157CFU,LF(CT
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74CBTLV3257PW,118
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P3S0200GMX
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SN74CB3Q3245PWR
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