MC74AC153, MC74ACT153 Dual 4-Input Multiplexer The MC74AC153/74ACT153 is a highspeed dual 4input multiplexer with common select inputs and individual enable inputs for each section. It can select two lines of data from four sources. The two buffered outputs present data in the true (noninverted) form. In addition to multiplexer operation, the MC74AC153/74ACT153 can act as a www.onsemi.com function generator and generate any two functions of three variables. MARKING Outputs Source/Sink 24 mA DIAGRAMS ACT153 Has TTL Compatible Inputs 16 These are PbFree Devices SOIC16 V E S I I I I Z xxx153G CC b 0 3b 2b 1b 0b b D SUFFIX 16 AWLYWW 16 15 14 13 12 11 10 9 CASE 751B 1 1 16 xxx TSSOP16 153 16 DT SUFFIX ALYW CASE 948F 1 1 2 3 4 567 8 1 E S I I I I Z GND a 1 3a 2a 1a 0a a xxx = AC or ACT Figure 1. Pinout: 16Lead Packages Conductors A = Assembly Location (Top View) WL or L = Wafer Lot Y = Year PIN ASSIGNMENT WW or W = Work Week G or = PbFree Package PIN FUNCTION (Note: Microdot may be in either location) I I Side A Data Inputs 0a 3a I I Side B Data Inputs 0b 3b S , S Common Select Inputs 0 1 ORDERING INFORMATION See detailed ordering and shipping information in the package E Side A Enable Input a dimensions section on page 6 of this data sheet. E Side B Enable Input b Z Side A Output a Z Side B Output b TRUTH TABLE Select Inputs (a or b) Output Inputs S S E I I I I Z 0 1 0 1 2 3 X X H X X X X L L L L L X X X L L L L H X X X H H L L X L X X L H L L X H X X H L H L X X L X L L H L X X H X H H H L X X X L L H H L X X X H H H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Semiconductor Components Industries, LLC, 2015 1 Publication Order Number: January, 2015 Rev. 8 MC74AC153/DMC74AC153, MC74ACT153 FUNCTIONAL DESCRIPTION The MC74AC153/74ACT153 is a dual 4input multiplexer. It can select two bits of data from up to four sources under the control of the common Select inputs (S , 0 E I I I I I I I I E a 0a 1a 2a 3a 0b 1b 2b 3b b S ). The two 4input multiplexer circuits have individual 1 S 0 activeLOW Enables (E ,E ) which can be used to strobe a b S 1 the outputs independently. When the Enables (E , E ) are a b Z Z a b HIGH, the corresponding outputs (Z , Z ) are forced LOW. a b The MC74AC153/74ACT153 is the logic implementation of a 2pole, 4position switch, where the position of the switch is determined by the logic levels supplied to the two Figure 2. Logic Symbol Select inputs. The logic equations for the outputs are shown below. Z = E (I S S +I S S +I S S +I S S ) a a 0a 1 0 1a 1 0 2a 1 0 3a 1 0 Z = E (I S S +I S S +I S S +I S S ) b b 0b 1 0 1b 1 0 2b 1 0 3b 1 0 I E I I I I S S I I 2b I E a 0a 1a 2a 3a 1 0 0b 1b 3b b Z Z a b NOTE: This diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. Figure 3. Logic Diagram www.onsemi.com 2