Overview
The SN74HCS21D is a logic Gate made by Texas Instruments in a SOIC-14 package with 14 pins. -40℃~+125℃ 1.5V~4.2V 16ns@6V,50pF 1V~3V 2 2V~6V 2mV、100mV、180mV、220mV、300mV、330mV 2uA 4 7.8mA 7.8mA 74HCS Series AND Gate Push-pull Schmitt trigger SOIC-14 Logic Gates ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:SN74LS21N(XBLW), from EasyEDA) and its footprint (Package_SO:SOIC-14_3.9x8.7mm_P1.27mm, from KiCad's library), ready for a KiCad board. 186 are in stock at JLCPCB (part C2871557).
Symbol
Footprint
Parameters
15- Current - Output High(IOH)
- 7.8mA
- Current - Output Low(IOL)
- 7.8mA
- Input Logic Level - High
- 1.5V~4.2V
- Input Logic Level - Low
- 1V~3V
- Input type
- Schmitt trigger
- Inputs per Gates
- 4
- Logic Type
- AND Gate
- Number of Gates
- 2
- Operating Temperature
- -40℃~+125℃
- Output Logic Level - Low
- 220mV
- Propagation Delay
- 16ns@6V,50pF
- Quiescent Current
- 2uA
- Series
- 74HCS Series
- Voltage - Supply
- 2V~6V
- output type
- Push-pull
Order codes
1- SN74HCS21DRLCSC C2871557
Pinout
14| Pin | Name | Type |
|---|---|---|
| 1 | 1A | Unspecified |
| 2 | 1B | Unspecified |
| 3 | NC | Unspecified |
| 4 | 1C | Unspecified |
| 5 | 1D | Unspecified |
| 6 | 1Y | Unspecified |
| 7 | GND | Unspecified |
| 8 | 2Y | Unspecified |
| 9 | 2A | Unspecified |
| 10 | 2B | Unspecified |
| 11 | NC | Unspecified |
| 12 | 2C | Unspecified |
| 13 | 2D | Unspecified |
| 14 | VCC | Unspecified |
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Is there a KiCad symbol and footprint for the SN74HCS21D?
Yes. The symbol is EasyEDA_Cloud:SN74LS21N(XBLW) and the footprint Package_SO:SOIC-14_3.9x8.7mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the SN74HCS21D?
SOIC-14, with 14 pins. Its footprint is drawn on this page.
Where is the SN74HCS21D datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the SN74HCS21D?
JLCPCB lists it as part C2871557, with 186 in stock; the sellers' links on this page open their listings.
What can replace the SN74HCS21D?
Parts like it in the library: the CD4093BM96 by Texas Instruments, the CD4078BM96 by Texas Instruments, the SN74LS21D by Texas Instruments and the CD4030BM96 by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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