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SN74LS257BD

16 Terminations4.75V~5.25V 16 Pin 74LS257 Signal switch74LS Series 1 Outputs4 Functions


  • Manufacturer: Texas Instruments
  • Nocochips NO: 815-SN74LS257BD
  • Package: 16-SOIC (0.154, 3.90mm Width)
  • Datasheet: -
  • Stock: 748
  • Description: 16 Terminations4.75V~5.25V 16 Pin 74LS257 Signal switch74LS Series 1 Outputs4 Functions(Kg)

Details

Tags

Parameters
Supply Type Single
Bandwidth 35MHz
Output Polarity TRUE
Voltage Supply Source Single Supply
Independent Circuits 1
Height 1.75mm
Length 9.9mm
Width 3.91mm
Thickness 1.58mm
Radiation Hardening No
RoHS Status ROHS3 Compliant
Lead Free Lead Free
Factory Lead Time 1 Week
Lifecycle Status ACTIVE (Last Updated: 3 days ago)
Mount Surface Mount
Mounting Type Surface Mount
Package / Case 16-SOIC (0.154, 3.90mm Width)
Number of Pins 16
Weight 141.690917mg
Operating Temperature 0°C~70°C
Packaging Tube
Series 74LS
JESD-609 Code e4
Pbfree Code yes
Part Status Active
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 16
ECCN Code EAR99
Type Multiplexer
Terminal Finish Nickel/Palladium/Gold (Ni/Pd/Au)
Technology TTL
Voltage - Supply 4.75V~5.25V
Terminal Position DUAL
Terminal Form GULL WING
Peak Reflow Temperature (Cel) 260
Number of Functions 4
Supply Voltage 5V
Base Part Number 74LS257
Pin Count 16
Number of Outputs 1
Operating Supply Voltage 5V
Circuit 4 x 2:1
Power Supplies 5V
Number of Channels 4
Power Dissipation 55mW
Number of Bits 2
Propagation Delay 15 ns
Family LS
Number of Inputs 8
Output Characteristics 3-STATE
Current - Output High, Low 2.6mA 24mA

SN74LS257BD Overview


The reason it is provided is that the board space can be saved by placing digital switch in the 16-SOIC (0.154, 3.90mm Width).Tube is the packaging method.In terms of mounting, digital switch ic uses the method of Surface Mount.the multiplexers uses IC Multiplexer as the analog IC.By maintaining the operating temperature at 0°C~70°C, turn signal switch will not be affected by external factors.When digital controlled switch operates at 4.75V~5.25V, designers are provided with a greater degree of flexibility.The multiplexers from 74LS series can be used for a wide range of applications.There is a design for terminating 16 as part of its basic configuration.In addition, it also has a base part number of 74LS257, which can be used to find related parts.For multiplexer's system, 5V voltage is supplied.There are 16 component pins in this turn signal switch.A conductor terminates at GULL WING.Its supply type is Single, which is used as the source of power.Currently, it is configured with 16 pins.It is mounted in the way of Surface Mount.I would like to refer to the logic switch as a member of the LS family.In the signal multiplexer, there are 2 bits available.For mux switch's normal operation, power supply 5V is provided.As part of the operation of this turn signal switch, there are 1 outputs.Reliable performance of the multiplexers can be achieved when a supply voltage of 5V is provided.The multiplexer is equipped with 8 inputs.The turn signal switch's circuit consists of 4 transmission channels.

SN74LS257BD Features


Supplied in the 16-SOIC (0.154, 3.90mm Width) package
Adopting a supply type of Single
Power supplies of 5V
Operating with the supply voltage of 5V

SN74LS257BD Applications


There are a lot of Texas Instruments SN74LS257BD Signal Switches / Multiplexers / Decoders applications.

  • Seven segment displays
  • Data bus control
  • To select different devices in microprocessor input
  • Microprocessor memory systems
  • Code converters
  • Data collection system
  • Encrypted communications system
  • Automatic Monitoring systems
  • Implementing boolean functions with multiple variables
  • Computer memory

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