Product Information

MC74ACT257NG

MC74ACT257NG electronic component of ON Semiconductor

Datasheet
Multiplexer 1-Element CMOS 3-ST 8-IN 16-Pin PDIP Rail
Manufacturer: ON Semiconductor
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges



Price (USD)

617: USD 0.6823 ea
Line Total: USD 420.98

0 - Global Stock
MOQ: 617  Multiples: 617
Pack Size: 617

 More Buying Options & Price Grid(s)

Availability Price Quantity
0 - WHS 1


Ships to you between Wed. 08 May to Tue. 14 May

MOQ : 617
Multiples : 617

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MC74ACT257NG
ON Semiconductor

617 : USD 0.6823

0 - WHS 2


Ships to you between Wed. 08 May to Tue. 14 May

MOQ : 981
Multiples : 1

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MC74ACT257NG
ON Semiconductor

981 : USD 0.1057
1000 : USD 0.0891
2500 : USD 0.0714
5000 : USD 0.0684
10000 : USD 0.0663
25000 : USD 0.0642

Read More Specifications

     
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Package Type
Pin Count
Number Of Inputs
Number Of Outputs
Mounting
Logical Function
Operating Temperature Classification
Operating Supply Voltage Typ
Operating Supply Voltage Min
Operating Supply Voltage Max
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Rad Hardened
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Additional Infomation About Product

MC74AC257, MC74ACT257 Quad 2-Input Multiplexer with 3-State Outputs The MC74AC257/74ACT257 is a quad 2input multiplexer with 3state outputs. Four bits of data from two sources can be selected using a Common Data Select input. The four outputs present the www.onsemi.com selected data in true (noninverted) form. The outputs may be switched to a high impedance state by placing a logic HIGH on the common MARKING Output Enable (OE) input, allowing the outputs to interface directly DIAGRAMS with busoriented systems. 16 Multiplexer Expansion by Tying Outputs Together SOIC16 xxx257G Noninverting 3State Outputs D SUFFIX 16 AWLYWW CASE 751B Outputs Source/Sink 24 mA 1 1 ACT257 Has TTL Compatible Inputs 16 These are PbFree Devices xxx TSSOP16 257 16 V OE I I Z I I Z CC 0c 1c c 0d 1d d DT SUFFIX ALYW 16 15 14 13 12 11 10 9 CASE 948F 1 1 xxx = AC or ACT A = Assembly Location WL or L = Wafer Lot Y = Year WW or W = Work Week 1 2 345 67 8 G or = PbFree Package SI I Z I I Z GND 0a 1a a 0b 1b b (Note: Microdot may be in either location) Figure 1. Pinout: 16Lead Packages Conductors (Top View) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet. Semiconductor Components Industries, LLC, 2015 1 Publication Order Number: March, 2015 Rev. 8 MC74AC257/DMC74AC257, MC74ACT257 FUNCTIONAL DESCRIPTION PIN NAME The MC74AC257/74ACT257 is a quad 2input PIN FUNCTION multiplexer with 3state outputs. It selects four bits of data S Common Data Select Input from two sources under control of a Common Data Select OE 3State Output Enable Input input. When the Select input is LOW, the I inputs are 0x I I Data Inputs from Source 0 0a 0d selected and when Select is HIGH, the I inputs are 1x selected. The data on the selected inputs appears at the I I Data Inputs from Source 1 1a 1d outputs in true (noninverted) form. The device is the logic Z Z 3State Multiplexer Outputs a d implementation of a 4pole, 2position switch where the position of the switch is determined by the logic levels TRUTH TABLE supplied to the Select input. The logic equations for the Output Select Data outputs are shown below: Outputs Enable Input Inputs Z = OE(I S+I S) a 1a 0a OE S I I Z 0 1 Z = OE(I S+I S) b 1b 0b H X X X Z Z = OE(I S+I S) c 1c 0c L H X LL Z = OE(I S+I S) L H X HH d 1d 0d L L L XL When the Output Enable input (OE) is HIGH, the outputs L L H X H are forced to a high impedance state. If the outputs are tied H = HIGH Voltage Level together, all but one device must be in the high impedance L = LOW Voltage Level state to avoid high currents that would exceed the maximum X = Immaterial Z = High Impedance ratings. Designers should ensure the Output Enable signals to 3state devices whose outputs are tied together are designed so there is no overlap. OE I I I I I I I I 0a 1a 0b 1b 0c 1c 0d 1d S Z Z Z Z a b c d Figure 2. Logic Symbol OE I I I I I I I I S 0a 1a 0b 1b 0c 1c 0d 1d Z Z Z Z a b c d 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

HS Compliance

Tariff Desc

8542.31.00 51 No ..Application Specific (Digital) Integrated Circuits (ASIC)

Electronic integrated circuits: Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits
Monolithic integrated circuits:

ON Semiconductor may also be referenced as

Aptina / ON Semiconductor
FAIRCHILD
FAIRCHILD (ON SEMICONDUCTOR)
Fairchild Semiconductor
FS8
FSC
ON
ON SEMI
ON Semicon
ON SEMICONDUCTOR
ON SEMICONDUCTOR (FAIRCHILD)
ON Semiconductor / Fairchild
ON4
ON5
onsemi
ON-SEMI
onsemi / Fairchild
OOF
Xsens / Fairchild

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