×

74AHCT157BQ

Quad 2-input multiplexer

The 74AHC/AHCT157 are high-speed Si-gate CMOS devices and are pin compatible with Low Power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.

The 74AHC/AHCT157 are quad 2-input multiplexer which select 4 bits of data from two sources under the control of a common data select input (S). The enable input (E) is active LOW. When E is HIGH, all of the outputs (1Y to 4Y) are forced LOW regardless of all other input conditions.

Moving the data from two groups of registers to four common output buses is a common use of the 74AHC/AHCT157. The state of the common data select input (S) determines the particular register from which the data comes. It can also be used as function generator. The device is useful for implementing highly irregular logic by generating any four of the 16 different functions of two variables with one variable common. The 74AHC/AHCT157 is logic implementation of a 4-pole, 2-position switch, where the position of the switch is determine by the logic levels applied to S.

The logic equations are:

  • 1Y = E × (1I1 × S + 1I0 × S)

  • 2Y = E × (2I1 × S + 2I0 × S)

  • 3Y = E × (3I1 × S + 3I0 × S)

  • 4Y = E × (4I1 × S + 4I0 × S)

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74AHCT157BQ 74AHCT157BQ,115 935285571115 SOT763-1 Order product

Features and benefits

  • Balanced propagation delays

  • All inputs have a Schmitt-trigger action

  • Inputs accepts voltages higher than VCC

  • Multiple input enable for easy expansion

  • Ideal for memory chip select decoding

  • For 74AHC157 only: operates with CMOS input levels

  • For 74AHCT157 only: operates with TTL input levels

  • ESD protection:

    • HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V

  • Multiple package options

  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74AHCT157BQProduction4.5 - 5.5TTL± 83.2low-40~1259112.760DHVQFN16

PCB Symbol, Footprint and 3D Model

Model NameDescription

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
74AHCT157BQ74AHCT157BQ,115
( 9352 855 71115 )
ActiveAHT157
DHVQFN16
(SOT763-1)
SOT763-1SOT763-1_115

Environmental information

Type numberOrderable part numberChemical contentRoHSRHF-indicator
74AHCT157BQ74AHCT157BQ,11574AHCT157BQ
Quality and reliability disclaimer

Documentation (5)

File nameTitleTypeDate
74AHC_AHCT157Quad 2-input multiplexerData sheet2023-09-05
AN11106Pin FMEA for AHC/AHCT familyApplication note2019-01-09
ahct157ahct157 IBIS modelIBIS model2013-04-07
74AHCT157BQ_Nexperia_Product_Reliability74AHCT157BQ Nexperia Product ReliabilityQuality document2023-05-29
SOT763-1_115DHVQFN16; Reel pack, SMD, 7" Q1/T1 product orientationPacking information2020-02-13

Support

If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.

Models

File nameTitleTypeDate
ahct157ahct157 IBIS modelIBIS model2013-04-07

PCB Symbol, Footprint and 3D Model

Model NameDescription

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingPacking quantityBuy online
74AHCT157BQ74AHCT157BQ,115935285571115SOT763-1_115- Order product

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.