4 layers104.3 × 120.8 mm
Testingg
AndrewCieslak/PersonalPowerSupply
My personal 20V in, 15-1.5 V out buck converter power supply code and schematics. Fully discrete, with almost no integrated components for the feedback loop.
115 partsMIT
SN74LS221N
Texas Instruments
Dual Monostable Multivibrator with Schmitt-Trigger Input
- Part id
- ti/SN74LS221N
- Category
- Uncategorised
- Package
- DIP16-300
- Pins
- 16
- Used on
- 1 open-source board
Overview
The SN74LS221N is an uncategorised made by Texas Instruments in a DIP16-300 package with 16 pins. Dual Monostable Multivibrator with Schmitt-Trigger Input.
PCBKit's library has its KiCad symbol (74xx:74LS221, from KiCad's library) and its footprint (ICs And Semiconductors THD:DIP16-300, from CERN's library), ready for a KiCad board. 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Pinout
16| Pin | Name | Type |
|---|---|---|
| 1 | A | Input |
| 2 | B | Input |
| 3 | CLR | Input |
| 4 | Q | Output |
| 5 | Q | Output |
| 6 | Cext | Input |
| 7 | RCext | Input |
| 8 | GND | Power in |
| 9 | A | Input |
| 10 | B | Input |
| 11 | CLR | Input |
| 12 | Q | Output |
| 13 | Q | Output |
| 14 | Cext | Input |
| 15 | RCext | Input |
| 16 | VCC | Power in |
Open-source boards using it
1Parts like it
8
AD526CD
DIP16-300Software Programmable Gain AmplifierAnalog DevicesUncategorisedADG211AKN
DIP16-300LC2MOS ±15V Quad SPST Switches (Normally Open)Analog DevicesUncategorisedADG212AKN
DIP16-300LC2MOS ±15V Quad SPST Switches (Normally Close)Analog DevicesUncategorisedADG408BN
DIP16-3008-Channel High-Performance CMOS Analog MultiplexersAnalog DevicesUncategorisedADG453BN
DIP16-300LC2MOS 5 Ohms RON SPST Switches (2 Normally closed + 2 Normally Open)Analog DevicesUncategorisedPS2502-4
DIP16-300Quad High Isolation Voltage Photocoupler (Photodarlington Transistor Output)CELUncategorisedISP845X
DIP16-300Quad High Density Mounting Photodarlington Optically Coupled IsolatorIsocom ComponentsUncategorisedISQ203
DIP16-300Quad High Density Phototransistor Optically Coupled IsolatorsIsocom ComponentsUncategorised
Questions
Is there a KiCad symbol and footprint for the SN74LS221N?
Yes. The symbol is 74xx:74LS221 and the footprint ICs And Semiconductors THD:DIP16-300, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the SN74LS221N?
DIP16-300, with 16 pins. Its footprint is drawn on this page.
What can replace the SN74LS221N?
Parts like it in the library: the AD526CD by Analog Devices, the ADG211AKN by Analog Devices, the ADG212AKN by Analog Devices and the ADG408BN by Analog Devices. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the SN74LS221N?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.