2 layers271.8 × 78.7 mm
PCPI AppliCard
baldengineer/bit-preserve
Project for capturing vintage, classic, aka old computer schematics in KiCad.
82 parts446
SN74121N
Texas InstrumentsExtended
0℃~+70℃ 16mA 2 4.75V~5.25V 400uA 45ns 7400 Monostable DIP-14 Monostable Multivibrators ROHS
- Part id
- ti/SN74121N
- Category
- Monostable Multivibrators
- Package
- DIP-14
- Pins
- 14
- In stock
- 0 at JLCPCB (C354141)
- Used on
- 1 open-source board
Overview
The SN74121N is a monostable Multivibrator made by Texas Instruments in a DIP-14 package with 14 pins. 0℃~+70℃ 16mA 2 4.75V~5.25V 400uA 45ns 7400 Monostable DIP-14 Monostable Multivibrators ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:SN74121N, from EasyEDA) and its footprint (Package_DIP:DIP-14_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C354141). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Pinout
14| Pin | Name | Type |
|---|---|---|
| 1 | #Q | Unspecified |
| 2 | NC | Unspecified |
| 3 | A1 | Unspecified |
| 4 | A2 | Unspecified |
| 5 | B | Unspecified |
| 6 | Q | Unspecified |
| 7 | GND | Unspecified |
| 8 | NC | Unspecified |
| 9 | R_INT | Unspecified |
| 10 | C_EXT | Unspecified |
| 11 | R_EXT/C_EXT | Unspecified |
| 12 | NC | Unspecified |
| 13 | NC | Unspecified |
| 14 | VCC | Unspecified |
Open-source boards using it
1Parts like it
7
CD4047BE
DIP-14-55℃~+125℃ 1 20uA 3V~18V 4000B 6.8mA 6.8mA 80ns Complementary type Monostable、Astable Retriggerable、Reset DIP-14 Monostable Multivibrators ROHSTexas InstrumentsMonostable MultivibratorsSN74LS122N
PDIP-140℃~+70℃ 1 11mA 28ns 4.75V~5.25V 400uA 74LS 8mA Monostable Retriggerable Schmitt trigger PDIP-14 Monostable Multivibrators ROHSTexas InstrumentsMonostable MultivibratorsCD4047BEE4
PDIP-14Reset input、Dual edge triggering、Retriggerable function PDIP-14 Monostable Multivibrators ROHSTexas InstrumentsMonostable MultivibratorsCD4047BEG4
PDIP-14-55℃~+125℃ 1 3V~18V 4000B 6.8mA 6.8mA 80ns Monostable、Astable PDIP-14 Monostable Multivibrators ROHSTexas InstrumentsMonostable MultivibratorsSN74LS122NE4
PDIP-14PDIP-14 Monostable Multivibrators ROHSTexas InstrumentsMonostable MultivibratorsSN74LS122NG4
PDIP-14PDIP-14 Monostable Multivibrators ROHSTexas InstrumentsMonostable MultivibratorsNTE74121
PDIP-14PDIP-14 Monostable Multivibrators ROHSNTE ElectronicsMonostable Multivibrators
Questions
Is there a KiCad symbol and footprint for the SN74121N?
Yes. The symbol is EasyEDA_Cloud:SN74121N and the footprint Package_DIP:DIP-14_W8.89mm_SMDSocket_LongPads, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the SN74121N?
DIP-14, with 14 pins. Its footprint is drawn on this page.
Where is the SN74121N datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the SN74121N?
JLCPCB lists it as part C354141, with 0 in stock; the sellers' links on this page open their listings.
What can replace the SN74121N?
Parts like it in the library: the CD4047BE by Texas Instruments, the SN74LS122N by Texas Instruments, the CD4047BEE4 by Texas Instruments and the CD4047BEG4 by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the SN74121N?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.