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SN74HC21N The Texas Instruments SN74HC21N is a dual 4-input positive AND gate. It operates over a wide voltage range and is suitable for various logic applications.
Mfr Part #:

SN74HC21N

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments SN74HC21N is a dual 4-input positive AND gate. It operates over a wide voltage range and is suitable for various logic applications.
✓ Total Stock: 5,295 pcs
$ Price Range: $0.33

SN74HC21N Available from 3 distributors

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✓ Non-Authorised
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Components Technology Group, Inc. ✓
Non-Authorised Inventory information
4,000 pcs
On Request
4000 pcs On Request 1 On Request On Request On Request On Request On Request
Risen Electronics ✓
Non-Authorised Inventory information
1,260 pcs
On Request
1260 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
Partservice ✓
Non-Authorised Inventory information
35 pcs
On Request
35 pcs On Request 1 On Request On Request On Request On Request On Request
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SN74HC21N Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Data Rate
Input Logic Level
Logic Type
Max Propagation Delay @ V, Max CL
Mounting Type
Number of Circuits
Number of Inputs
Operating Temperature
Supplier Device Package
Supplier Package
Voltage
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SN74HC21N Description

Short technical summary and product information.

The SN74HC21N from Texas Instruments is a high-speed dual 4-input positive AND gate. This device contains two independent 4-input AND gates, each performing the Boolean function Y = A • B • C • D in positive logic. It offers a wide operating voltage range from 2V to 6V and a typical propagation delay of 11ns, with a maximum of 19ns at 6V and 50pF.

 

The SN74HC21N features outputs that can drive up to 10 LSTTL loads and has a low power consumption of 20µA maximum ICC. The input logic levels range from 1.5V to 4.2V. This component is designed for through-hole mounting and comes in a standard 14-pin DIP package.

 

With its robust operating temperature range of -40°C to 85°C, the SN74HC21N is suitable for a variety of industrial and commercial applications requiring reliable AND logic functions. Its standard CMOS technology ensures significant power reduction compared to LSTTL logic ICs.

SN74HC21N Quick Information

Product Type: AND Gate
Series: SN74HC21
Canonical Name: Texas Instruments SN74HC21N Dual 4-Input AND Gate
Subcategory: AND Gates

SN74HC21N Compliance

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

SN74HC21N Estimated Pricing

Qty Low High
1+ $0.33 $0.33

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

SN74HC21N Features

  • Dual 4-input positive AND gates.
  • Wide operating voltage range: 2V to 6V.
  • Low power consumption: 20µA maximum ICC.
  • High speed with 19ns max propagation delay.
  • Standard 14-pin DIP through-hole package.

SN74HC21N Applications

  • Implementing complex logic functions.
  • Control signal gating.
  • Digital system design.
  • Signal conditioning circuits.

SN74HC21N FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the SN74HC21N?

2V to 6V.

What is the package type of the SN74HC21N?

14-DIP (0.300", 7.62mm) through-hole package.

What is the operating temperature range?

-40°C to 85°C.

What is the propagation delay?

19ns maximum at 6V with 50pF load. Typical 11ns.

What is the output drive current?

5.2mA maximum output drive current.

How many inputs does each gate have?

Each of the two AND gates has 4 inputs.

What is the logic type?

AND Gate.

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