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74LS40 The 74LS40 is a dual 4-input NAND gate IC from N-A, featuring buffered outputs for increased current drive. It operates at 5V and comes in a 14-pin package.
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74LS40

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Mfr Name: N-A
N-A
The 74LS40 is a dual 4-input NAND gate IC from N-A, featuring buffered outputs for increased current drive. It operates at 5V and comes in a 14-pin package.
✓ Total Stock: 19 pcs
$ Price Range: $0.25

74LS40 Available from 1 distributor

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74LS40 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Automotive Grade
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74LS40 Description

Short technical summary and product information.

The 74LS40 is an integrated circuit featuring two independent 4-input NAND gates, each with buffered outputs. This design allows for higher current sourcing and sinking capabilities compared to standard NAND gates. The chip operates with a VCC voltage of 5V and is housed in a 14-pin package, suitable for through-hole mounting.

 

Each of the two 4-input NAND gates provides a LOW output only when all four of its inputs are HIGH. The buffered output is a key characteristic, enabling the device to drive more current. The maximum output current is specified as 1.2 mA when sourcing high and 24 mA when sinking low, though these values may vary by specific model. The 74LS40 is part of the 7400 series of logic ICs, offering a reliable solution for digital logic applications requiring NAND functionality with enhanced output drive.

 

This component is often used in digital circuits where logic inversion and multiple inputs are required. Its dual gate structure allows for flexibility in design, enabling the implementation of complex logic functions. The 14-pin configuration and through-hole mounting make it compatible with traditional PCB assembly processes.

74LS40 Quick Information

Product Type: Dual 4-input NAND Gate
Series: 7400
Canonical Name: 74LS40 Dual 4-input NAND Gate
Subcategory: NAND Gate

74LS40 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

74LS40 Estimated Pricing

Qty Low High
1+ $0.25 $0.25

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

74LS40 Features

  • Dual 4-input NAND gates
  • Buffered outputs for higher current drive
  • Operates at 5V VCC
  • 14-pin package for through-hole mounting
  • Standard 7400 series logic IC

74LS40 Applications

  • Digital logic circuit implementation
  • Signal conditioning and control
  • Combinational logic designs
  • Interfacing with other logic families

74LS40 FAQs

5 frequently asked questions generated from this part’s specifications.
What does the 74LS40 IC do?

The 74LS40 IC provides two independent 4-input NAND gates with buffered outputs.

How many inputs does each gate on the 74LS40 have?

Each of the two gates on the 74LS40 has 4 inputs.

What is the operating voltage for the 74LS40?

The 74LS40 supports a VCC voltage of 5V.

What is the output current capability of the 74LS40?

The 74LS40 can source up to 1.2 mA when the output is high and sink up to 24 mA when the output is low.

What type of package is the 74LS40 in?

The 74LS40 comes in a 14-pin package.

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