Quad 2-input multiplexer

The 74AHC157-Q100; 74AHCT157-Q100 is a high-speed Si-gate CMOS device and is pin compatible with Low-Power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard no. 7A.

The 74AHC157-Q100; 74AHCT157-Q100 is a quad 2-input multiplexer which selects 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 74AHC157-Q100; 74AHCT157-Q100. 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 74AHC157-Q100; 74AHCT157-Q100 is logic implementation of a 4-pole, 2-position switch. The logic levels applied to S, determines the position of the switch.

The logic equations are:

1Y = E (1I1 x S + 1I0 x S)

2Y = E (2I1 x S + 2I0 x S)

3Y = E (3I1 x S + 3I0 x S)

4Y = E (4I1 x S + 4I0 x S)

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.


  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)
    • Specified from -40 °C to +85 °C and from -40 °C to +125 °C
  • Balanced propagation delays
  • All inputs have a Schmitt-trigger action
  • Inputs accept voltages higher than VCC
  • Multiple input enable for easy expansion
  • Ideal for memory chip select decoding
  • Input levels:
    • For 74AHC157-Q100: CMOS level
    • For 74AHCT157-Q100: TTL level
  • ESD protection:
    • MIL-STD-883, method 3015 exceeds 2000 V
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 Ω)
  • Multiple package options



型号Product statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)Power dissipation considerationsTamb (Cel)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74AHCT157BQ-Q100Production4.5 - 5.5TTL+/- 83.2low-40~1259112.760DHVQFN16


SOT763-1Reel 7" Q1/T1ActiveAHT15774AHCT157BQ-Q100X
( 9353 006 88115 )


型号可订购的器件编号化学成分RoHS / RHF无铅转换日期EFRMSLMSL无铅
74AHCT157BQ-Q10074AHCT157BQ-Q100X74AHCT157BQ-Q100Always Pb-free84.911

文档 (10)

74AHC_AHCT157_Q100Quad 2-input multiplexerData sheet2017-05-03
AN11106Pin FMEA for AHC/AHCT familyApplication note2011-11-04
AN223Ground and VCC Bounce of High-Speed Integrated CircuitsApplication note2013-03-13
AN252Live Insertion Aspects of Philips Logic FamiliesApplication note2013-03-13
AN212Package lead inductance considerations in high-speed applicationsApplication note2013-03-13
AN10156Sorting through the low voltage logic mazeApplication note2013-03-13
ahct157ahct157 IBIS modelIBIS model2013-04-07
75017285Logic selection guide 2016Selection guide2015-01-07
SOT763-1_115DHVQFN16; Reel pack, SMD, 7" Q1/T1 standard product orientation Orderable part number ending ,115 or X Ordering code (12NC) ending 115Packing2016-07-05
SOT763-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 0.85 mm bodyOutline drawing2018-06-04




ahct157ahct157 IBIS modelIBIS model2013-04-07


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