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SN74LS221DE4

SN74LS221DE4

SN74LS221DE4

Texas Instruments

5V Programmable Timers 16 Pins 5V SOIC

SOT-23

SN74LS221DE4 Datasheet PDF

non-compliant

Technical Specifications

Parameter NameValue
TypeParameter
Mount Surface Mount
Package / Case SOIC
Number of Pins 16
Weight 141.690917mg
JESD-609 Code e4
Pbfree Code yes
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 16
Terminal Finish Nickel/Palladium/Gold (Ni/Pd/Au)
Max Operating Temperature70°C
Min Operating Temperature 0°C
Technology TTL
Terminal Position DUAL
Terminal FormGULL WING
Peak Reflow Temperature (Cel) 260
Number of Functions 2
Supply Voltage 5V
Pin Count16
Operating Supply Voltage5V
Number of Elements 2
Power Supplies5V
Temperature GradeCOMMERCIAL
Max Supply Voltage5.25V
Min Supply Voltage4.75V
Load Capacitance15pF
Current - Output 8mA
Propagation Delay80 ns
Quiescent Current4.7mA
Turn On Delay Time80 ns
Family LS
Logic Function Multivibrator
Output Polarity COMPLEMENTARY
High Level Output Current-400μA
Low Level Output Current8mA
Schmitt Trigger InputYes
Number of Data/Clock Inputs 2
Length 9.9mm
Height Seated (Max) 1.75mm
Width 3.9mm
Radiation HardeningNo
RoHS StatusRoHS Compliant
Lead Free Contains Lead
In-Stock:4266 items

SN74LS221DE4 Product Details

SN74LS221DE4 Overview


There is a SOIC that comes with the timer clock, which is enclosed in the packaging. To mount this digital timer with Surface Mount. The minimum operating temperature of the chip must not be lower than 0°C. It's best to use the timer clock when the temperature is below 70°C. The timer clock contains 16 pins. The digital timer's operating supply voltage is rated 5V voltage. The supply voltage of the programmable timer can rate 5V. The sum of the IC chip pins is 16 . The number of the chip's terminations sums up to 16. The timer clock has 141.690917mg in weight. The minimum supply voltage of the chip must not be lower than 4.75V. The supply voltage of this chip should not exceed 5.25V. The timer clock runs quiescent current at 4.7mA.

SN74LS221DE4 Features


Max Operating temperature at 0°C
Quiescent Current at 4.7mA


SN74LS221DE4 Applications


There are a lot of Texas Instruments
SN74LS221DE4 Programmable Timers & Oscillators applications.


  • Consumer Electronics
  • Remote Sensors
  • White Goods
  • Electric Vehicles
  • Always On Systems
  • Clutch Actuator circuit
  • Car Door Handle circuit
  • Smart Key
  • Remote current sensor
  • Intruder Detection

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