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Home > Products > Integrated Circuits (ICs) > Logic > Signal Switches, Multiplexers, Decoders

Nexperia USA Inc. 74AHC157D,118

Name: 74AHC157D,118
Brand: Nexperia USA Inc.
SKU: 74AHC157D,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AHC157D,118

Manufacturer:: Nexperia USA Inc.

Category:: Signal Switches, Multiplexers, Decoders

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: 74AHC157D,118.pdf

Description:: IC MULTIPLEXER 4 X 2:1 16SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74AHC157D,118 from Nexperia is a quad 2-input CMOS multiplexer in SO16 package, operating from 2.0 V to 5.5 V, with 3.2 ns typical propagation delay at 5 V and active-low enable (E) for output control. It implements four independent 2:1 data selectors sharing common select (S) and enable (E), used in bus routing, register-to-bus transfer, and logic function generation in digital control systems.

For engineers reviewing the 74AHC157D,118 datasheet, 74AHC157D,118 pinout, 74AHC157D,118 application, or 74AHC157D,118 equivalent, this page delivers verified functional behavior, SO16 pin mapping, temperature-rated performance (−40 °C to +125 °C), TTL/CMOS input compatibility context, and real-world use cases in address decoding and signal routing.

Technical Context

The device implements four independent 2:1 multiplexers with shared S (select) and E (enable) control lines. Each output (1Y–4Y) follows Y = E̅ × (I₀ × S̅ + I₁ × S), enabling deterministic data routing from two parallel 4-bit sources based on S state and E assertion.

All inputs feature Schmitt-trigger action and tolerate voltages up to 7.0 V, while outputs drive ±8 mA at VCC = 4.5 V. The logic supports both CMOS-level (74AHC) and TTL-level (74AHCT) input thresholds, with VIH = 3.85 V and VIL = 1.65 V at VCC = 5.5 V for the AHC variant.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	Quad 2:1 multiplexer with common select (S) and active-low enable (E)
Supply Voltage Range	2.0 V to 5.5 V - supports mixed-voltage system interfacing and low-power operation
Propagation Delay (t_pd)	3.2 ns typ. (CL = 15 pF, VCC = 5 V) - enables high-speed bus switching in 50 MHz+ control paths
Output Drive	±8 mA at VCC = 4.5 V - sufficient to drive standard CMOS loads and small capacitive buses
Operating Temperature	−40 °C to +125 °C - qualified for industrial and extended-temperature embedded applications
Input Thresholds	VIH = 3.85 V, VIL = 1.65 V at VCC = 5.5 V - ensures robust noise immunity in noisy digital environments
ESD Protection	HBM > 2000 V, CDM > 1000 V - meets JEDEC JS-001/JS-002 for handling reliability

Pinout & Package

74AHC157D,118 is housed in a plastic small outline package (SO16, SOT109-1) with 16 leads, 3.9 mm body width, and gull-wing lead form suitable for surface-mount reflow assembly.

Pin/Terminal	Circuit Role	Design Meaning
1 (S)	Common data select input	Determines source (I₀ or I₁) routed to all four outputs; HIGH selects I₁, LOW selects I₀
2, 5, 11, 14 (1I₀–4I₀)	Data inputs from source 0	Four independent low-source inputs; each paired with corresponding I₁ for 2:1 selection
3, 6, 10, 13 (1I₁–4I₁)	Data inputs from source 1	Four independent high-source inputs; selected when S = HIGH
4, 7, 9, 12 (1Y–4Y)	Multiplexer outputs	Active-driven outputs; forced LOW when E = HIGH regardless of other inputs
8 (GND)	Ground reference	0 V return path for logic and supply current; must be low-impedance for noise control
15 (E)	Enable input (active LOW)	Global output disable: E = HIGH forces all Y outputs LOW; E = LOW enables normal multiplexing
16 (VCC)	Positive supply	Primary power rail; decoupling capacitor required near pin for stable high-speed switching

Key Features

Feature	Design Value
Balanced propagation delays	Matched t_PLH/t_PHL across all channels minimizes skew in synchronized data routing
Schmitt-trigger inputs	Provides hysteresis (≈0.5 V at VCC = 5 V) for reliable switching with slow or noisy control signals
Voltage-tolerant inputs	Accepts up to 7.0 V regardless of VCC - allows interfacing with higher-voltage logic without level shifters
Multiple-package availability	SO16 (D), TSSOP16 (PW), DHVQFN16 (BQ) - enables layout flexibility across density and thermal requirements
Industrial temperature range	Specified from −40 °C to +125 °C - supports deployment in motor drives, PLCs, and outdoor electronics

Applications

Memory Address Multiplexing

Bus Signal Routing

Use Scenario: Selecting between two 4-bit address registers feeding a memory decoder in a microcontroller peripheral interface.

IC Role / Device Role / Timing Role: Quad 2:1 selector routing address bits under software-controlled S/E signals; operates synchronously with clock domain.

Use Value: Reduces PCB trace count by consolidating dual-register access into single 4-bit bus, eliminating discrete gate logic.

Use Scenario: Dynamically steering sensor data streams (e.g., ADC outputs from two channels) onto a shared SPI data line.

IC Role / Device Role / Timing Role: Data-path switch controlled by MCU GPIO; S toggles channel, E gates entire output during reconfiguration.

Use Value: Enables dual-sensor monitoring with one SPI interface, cutting component count and firmware complexity.

Logic Function Generation

Use Scenario: Implementing custom combinational logic (e.g., parity generator or ALU auxiliary function) using 2-variable truth table mapping.

IC Role / Device Role / Timing Role: Configurable logic block where I₀/I₁ represent minterms and S defines variable assignment; static or slow-switching use.

Use Value: Replaces 4–6 discrete gates with single IC, improving board density and reducing interconnect delay.

Use Scenario: Choosing between two sets of CPU register banks (e.g., user vs. supervisor mode) in an embedded controller datapath.

IC Role / Device Role / Timing Role: High-speed register bank selector synchronized to instruction decode phase; E enables context isolation.

Use Value: Supports fast mode switching without pipeline stalls, leveraging sub-4 ns propagation for cycle-critical timing.

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
74AHCT157D,118	TTL-compatible inputs (VIH = 2.0 V min); identical pinout, timing, and SO16 package	Required when driving from legacy 5 V TTL or LSTTL sources without level translation	Select when interfacing with older logic families; otherwise 74AHC157D offers wider VCC range and lower static current
SN74LV4052APWR	Dual 4:1 analog/digital multiplexer; different topology, no common enable, LV logic family	Used for analog signal routing or when 4:1 ratio per channel is needed instead of quad 2:1	Not drop-in; choose only if architecture requires analog capability or 4:1 selection per channel

Compared with 74AHCT157D,118, the 74AHC157D,118 provides broader supply range and lower ICC, while SN74LV4052APWR serves distinct analog/digital routing needs - neither replicates the exact quad 2:1 + global enable functionality of the original.

Availability

74AHC157D,118 is available at Aetrix Electronics and suitable for industrial control systems, embedded instrumentation, and digital signal routing applications requiring stable component supply across extended temperature ranges.

Supply support for 74AHC157D,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 leading Dutch semiconductor manufacturer specializing in high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74AHC series targets high-speed, low-power digital logic applications with robust noise immunity and wide voltage operation, designed specifically for modern embedded control and interface subsystems.

FAQ

What is the maximum clock frequency supported by 74AHC157D,118?

The device has no internal clock; its usable data rate depends on propagation delay and load. With t_pd = 3.2 ns (typ.) and CL = 15 pF at 5 V, it supports clean switching up to ≈150 MHz in minimal-load configurations. System-level timing must account for board trace capacitance and driver strength.

Can 74AHC157D,118 interface directly with 3.3 V microcontrollers?

Yes. At VCC = 3.3 V, VIH = 2.1 V (min) and VIL = 0.9 V (max), fully compatible with standard 3.3 V CMOS outputs. Outputs swing rail-to-rail (VOH ≥ 3.1 V, VOL ≤ 0.36 V at IO = 4 mA), ensuring reliable reception by 3.3 V inputs.

Is the enable (E) pin internally pulled up or down?

No internal pull-up or pull-down exists on the E pin. It is a standard CMOS input requiring explicit biasing. In most designs, E is driven actively by a GPIO or logic signal; floating E results in undefined output states and must be avoided.

Does 74AHC157D,118 support hot insertion or live swapping?

No. The device lacks hot-swap protection circuitry. Applying VCC before or after input signals may cause latch-up or excessive current due to input clamping diodes. Power sequencing per JEDEC JESD8-12 must be observed: apply GND first, then VCC, then inputs.

74AHC157D,118 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74AHC

Package/Case:: 16-SOIC (0.154", 3.90mm 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-SO

74AHC157D,118 FAQ

1.How can I place an order for 74AHC157D,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AHC157D,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 74AHC157D,118 reliable?

The price and inventory of 74AHC157D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC157D,118 is usually 5 days.

3.What payment methods are accepted for 74AHC157D,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC157D,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AHC157D,118?

74AHC157D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AHC157D,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 74AHC157D,118?

For technical support, including 74AHC157D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC157D,118 requirements.

6.How does Aetrix verify that 74AHC157D,118 is sourced from the original manufacturer or authorized distributors?

All 74AHC157D,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 74AHC157D,118 meets industry standards.

7.What is the process for return or replacement of 74AHC157D,118?

All 74AHC157D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC157D,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 74AHC157D,118 part is unused and in its original packaging.

Return procedure for 74AHC157D,118:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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