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74AC257SCX on a board, in 3D

74AC257SCX

onsemi

-40℃~+85℃ 24mA 24mA 2V~6V Single Supply SOIC-16 Signal Switches, Multiplexers, Decoders ROHS

Extended
DatasheetJLCPCBLCSConsemi/74AC257SCX
Category
Signal Switches, Multiplexers, Decoders
Package
SOIC-16
Pins
5

Overview

The 74AC257SCX is a signal Switches, Multiplexers, Decoder made by onsemi in a SOIC-16 package with 16 pins. -40℃~+85℃ 24mA 24mA 2V~6V Single Supply SOIC-16 Signal Switches, Multiplexers, Decoders ROHS.

PCBKit's library has its KiCad symbol (74xx:74LS257, from KiCad's library) and its footprint (Package_SO:SO-16_3.9x9.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3234409).

Symbol

S1I0a2I1a3Za4I0b5I1b6Zb7GND8Zd9I1d10I0d11Zc12I1c13I0c14OE15VCC16
74xx:74LS257From KiCad's library

Footprint

12345678910111213141516
Package_SO:SO-16_3.9x9.9mm_P1.27mmFrom KiCad's library

Parameters

5
Current - Output High(IOH)
24mA
Current - Output Low(IOL)
24mA
Operating temperature
-40℃~+85℃
Voltage - Supply
2V~6V
Voltage Supply Source
Single Supply

Order codes

1

Pinout

16
The pins of the 74AC257SCX
PinNameType
1SInput
2I0aInput
3I1aInput
4ZaTri-state
5I0bInput
6I1bInput
7ZbTri-state
8GNDPower in
9ZdTri-state
10I1dInput
11I0dInput
12ZcTri-state
13I1cInput
14I0cInput
15OEInput
16VCCPower in

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A picture
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[![74AC257SCX](https://pcbkit.io/embed/parts/onsemi/74AC257SCX.jpg?size=s)](https://pcbkit.io/parts/onsemi/74AC257SCX)

Questions

Is there a KiCad symbol and footprint for the 74AC257SCX?

Yes. The symbol is 74xx:74LS257 and the footprint Package_SO:SO-16_3.9x9.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the 74AC257SCX?

SOIC-16, with 16 pins. Its footprint is drawn on this page.

Where is the 74AC257SCX datasheet?

onsemi publishes it: the Datasheet link on this page opens it.

Where can I order the 74AC257SCX?

JLCPCB lists it as part C3234409, with 0 in stock; the sellers' links on this page open their listings.

What can replace the 74AC257SCX?

Parts like it in the library: the 74HC138D by Nexperia, the EM74HC138D by EnergyMath, the CD4028BM(LX) by lingxingic and the CJ74HC157AEN by Jiangsu Changjing Electronics Technology (CJ). Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8