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SN74ALS257AN SN74ALS257AN is a 4 x 2:1 multiplexer from Texas Instruments. It operates from a single 4.5V to 5.5V supply and comes in a 16-DIP through-hole package.
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SN74ALS257AN

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
SN74ALS257AN is a 4 x 2:1 multiplexer from Texas Instruments. It operates from a single 4.5V to 5.5V supply and comes in a 16-DIP through-hole package.
✓ Total Stock: 2,870 pcs
$ Price Range: $0.83

SN74ALS257AN Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
2,336 pcs
On Request
2336 pcs On Request 1 On Request On Request On Request On Request On Request
Hybrid Electronics ✓
Non-Authorised Inventory information
534 pcs
On Request
534 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

SN74ALS257AN Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Circuit
Current
Halogen Free
Independent Circuits
Mounting Type
Operating Temperature
Package Quantity
SVHC Present
Supplier Device Package
Supplier Package
Type
Voltage
Voltage Supply Source
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SN74ALS257AN Description

Short technical summary and product information.

The SN74ALS257AN is a 4 x 2:1 multiplexer from Texas Instruments, designed for digital data selection in logic systems. It operates from a single 4.5V to 5.5V supply, making it compatible with standard 5V logic families. The device can sink and source 24mA and 2.6mA respectively, providing adequate drive for bus-oriented applications.

 

This multiplexer is offered in a 16-DIP (0.300", 7.62mm) through-hole package, suitable for socketed use or direct soldering on prototyping boards. The operating temperature range is 0°C to 70°C, covering typical commercial environments. The supply voltage tolerance and output currents are specified for reliable operation within these limits.

 

As a single-supply device, the SN74ALS257AN simplifies power rail design compared to dual-supply multiplexers. Its 4 x 2:1 configuration allows two input buses to be selected per group, enabling efficient data routing in microprocessor and memory systems. The package is supplied in tubes of 25 units for moderate volume assembly.

SN74ALS257AN Quick Information

Series: SN74ALS257A
Canonical Name: Texas Instruments SN74ALS257AN Quad 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs
Subcategory: Multiplexer/Switch

SN74ALS257AN Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: No

SN74ALS257AN Estimated Pricing

Qty Low High
1+ $0.83 $0.83

Estimated market price range - modelled values for guidance only, not live distributor offers.

SN74ALS257AN Features

  • 4 x 2:1 multiplexer for data routing.
  • Operates from single 4.5V to 5.5V supply.
  • High and low output current: 2.6mA and 24mA.
  • Operating temperature range 0°C to 70°C.
  • Through-hole 16-DIP package for easy breadboarding.

SN74ALS257AN Applications

  • Ideal for digital data selection in bus systems.
  • Used in general-purpose logic switching circuits.
  • Suitable for memory address multiplexing.
  • Often employed in microprocessor interface designs.

SN74ALS257AN FAQs

5 frequently asked questions generated from this part’s specifications.
What is the operating voltage range?

The SN74ALS257AN operates from a single supply of 4.5V to 5.5V.

What is the circuit configuration?

The device is a 4 x 2:1 multiplexer, meaning four independent 2-input to 1-output multiplexers.

What is the package type and mounting?

It comes in a 16-DIP (0.300", 7.62mm) package with through-hole mounting.

What is the operating temperature range?

The operating temperature range is 0°C to 70°C.

What is the supply source type?

The SN74ALS257AN uses a single supply source.

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