
Overview
The CD4521S is a counters, Divider made by GR in a SOP-16 package with 16 pins.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:CD4521BEE4, from EasyEDA) and its footprint (Package_SO:SOIC-16_3.9x9.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C22397522).
Symbol
Footprint
Parameters
10- Direction
- Down Counter
- Features
- Reset function, Low-power mode
- Operating Temperature
- 0℃~+70℃
- Power Dissipation
- 500mW
- Reset
- Asynchronous
- Resolution
- 24
- Series
- CD4000
- Timing
- Asynchronous
- Trigger Type
- Falling Edge
- Voltage - Supply
- 3V~18V
Order codes
1- CD4521SLCSC C22397522
Pinout
16| Pin | Name | Type |
|---|---|---|
| 1 | Q24 | Unspecified |
| 2 | RESET | Unspecified |
| 3 | VSS | Unspecified |
| 4 | OUT2 | Unspecified |
| 5 | VDD | Unspecified |
| 6 | IN2 | Unspecified |
| 7 | OUT1 | Unspecified |
| 8 | VSS | Unspecified |
| 9 | IN1 | Unspecified |
| 10 | Q18 | Unspecified |
| 11 | Q19 | Unspecified |
| 12 | Q20 | Unspecified |
| 13 | Q21 | Unspecified |
| 14 | Q22 | Unspecified |
| 15 | Q23 | Unspecified |
| 16 | VDD | Unspecified |
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Is there a KiCad symbol and footprint for the CD4521S?
Yes. The symbol is EasyEDA_Cloud:CD4521BEE4 and the footprint Package_SO:SOIC-16_3.9x9.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the CD4521S?
SOP-16, with 16 pins. Its footprint is drawn on this page.
Where can I order the CD4521S?
JLCPCB lists it as part C22397522, with 0 in stock; the sellers' links on this page open their listings.
What can replace the CD4521S?
Parts like it in the library: the CD4017BM96 by Texas Instruments, the HEF4060BT by Nexperia, the MC14060BD by onsemi and the CD4060BDTR(XBLW) by XBLW. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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