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SN74LS257BD
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| 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 | 6 Weeks |
| 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