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74HCT157BQ ECAD models PCB Symbol, Footprint & ECAD Model

Quad 2-input multiplexer

The 74HC157; 74HCT157 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL. It is specified in compliance with JEDEC standard no. 7A.

The 74HC/HCT157 are quad 2-input multiplexers 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 74HC/HCT157. 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 74HC/HCT157 is logic implementation of a 4-pole, 2-position switch, where the position of the switch is determined 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)

The 74HC/HCT157 is identical to the 74HC158 but has non-inverting (true) outputs.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HCT157BQ 74HCT157BQ,115 935294424115 SOT763-1 Order product

Features

  • Low-power dissipation
  • Non-inverting data path
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Target applications

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
74HCT157BQProduction4.5 - 5.5TTL± 413low-40~1259213.161DHVQFN16

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
74HCT157BQ74HCT157BQ,115
( 9352 944 24115 )
ActiveHCT157
DHVQFN16
(SOT763-1)
SOT763-1Reel 7" Q1/T1

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFEFRIFRMTBF (hour)MSLMSL leadfree
74HCT157BQ74HCT157BQ,11574HCT157BQ84.96.621.51E811
Quality and reliability disclaimer

Documentation (4)

File nameTitleTypeDate
74HC_HCT157Quad 2-input multiplexerData sheet2017-03-30
hct15774HCT157 IBIS modelIBIS model2015-11-02
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 1 mm bodyOutline drawing2018-11-14

Support

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Models

File nameTitleTypeDate
hct15774HCT157 IBIS modelIBIS model2015-11-02

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74HCT157BQ74HCT157BQ,115935294424115Reel 7" Q1/T1Order product

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