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74F257APC on a board, in 3D

74F257APC

onsemi

0℃~+70℃ 15mA 24mA 3mA 4.2ns@5V,50pF、4.5ns@5V,50pF 4.5V~5.5V 74F Output enable high-impedance、Tri-state output Single Supply PDIP-16 Signal Switches, Multiplexers, Decoders ROHS

Extended
DatasheetJLCPCBLCSConsemi/74F257APC
Category
Signal Switches, Multiplexers, Decoders
Package
PDIP-16
Pins
5

Overview

The 74F257APC is a signal Switches, Multiplexers, Decoder made by onsemi in a PDIP-16 package with 16 pins. 0℃~+70℃ 15mA 24mA 3mA 4.2ns@5V,50pF、4.5ns@5V,50pF 4.5V~5.5V 74F Output enable high-impedance、Tri-state output Single Supply PDIP-16 Signal Switches, Multiplexers, Decoders ROHS.

PCBKit's library has its KiCad symbol (74xx:74LS257, from KiCad's library) and its footprint (Package_DIP:DIP-16_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3231633). 3 open-source boards in 3 repositories on GitHub use it.

Symbol

S1I0a2I1a3Za4I0b5I1b6Zb7GND8Zd9I1d10I0d11Zc12I1c13I0c14OE15VCC16
74xx:74LS257From KiCad's library

Footprint

12345678910111213141516
Package_DIP:DIP-16_W8.89mm_SMDSocket_LongPadsFrom KiCad's library

Parameters

9
Current - Output High(IOH)
3mA
Current - Output Low(IOL)
24mA
Function
Tri-state output；Output enable high-impedance
Operating temperature
0℃~+70℃
Propagation Delay
4.2ns@5V,50pF；4.5ns@5V,50pF
Quiescent Current
15mA
Series
74F
Voltage - Supply
4.5V~5.5V
Voltage Supply Source
Single Supply

Order codes

1

Pinout

16
The pins of the 74F257APC
PinNameType
1SInput
2I0aInput
3I1aInput
4ZaTri-state
5I0bInput
6I1bInput
7ZbTri-state
8GNDPower in
9ZdTri-state
10I1dInput
11I0dInput
12ZcTri-state
13I1cInput
14I0cInput
15OEInput
16VCCPower in

Open-source boards using it

All 3
  • 4 layers241.8 × 174.8 mmAmiga Rejuvenator, the printed circuit board in 3D

    Amiga Rejuvenator

    joethezombie/Amiga-1000-Rejuvenator

    A1000 Rejuvenator

    121 parts58
  • 2 layersCompaqportableIII, the printed circuit board in 3D

    CompaqportableIII

    raymondh2/CompaqPortableIII

    Current PCB Memory Expansion board layout is untested. The backplane for the expansion cards is tested and working.

    123 parts17
  • 4 layers160 × 100 mmSBC-386EX-2, the printed circuit board in 3D

    SBC-386EX-2

    danwerner21/SBC80386EX

    ECB 80386EX sbc

    96 parts1

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Questions

Is there a KiCad symbol and footprint for the 74F257APC?

Yes. The symbol is 74xx:74LS257 and the footprint Package_DIP:DIP-16_W8.89mm_SMDSocket_LongPads, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the 74F257APC?

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

Where is the 74F257APC datasheet?

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

Where can I order the 74F257APC?

JLCPCB lists it as part C3231633, with 0 in stock; the sellers' links on this page open their listings.

What can replace the 74F257APC?

Parts like it in the library: the SN74HC138NED-GMIC by GREENMICRO, the 74HC138N by HGSEMI, the 74HC139N by HGSEMI and the 74HC238N by HGSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the 74F257APC?

3 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8