Overview
The NE521D is a comparator made by onsemi in a SOIC-14 package with 14 pins. 0℃~+70℃ 1uA 2 27mA 6mV 7.5uA 9.6ns Push-pull TTL ±5V SOIC-14 Comparators ROHS.
PCBKit's library has its KiCad symbol (Operational Amplifiers:NE521, from CERN's library) and its footprint (Package_SO:SOIC-14_3.9x8.7mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C223582).
Symbol
Footprint
Parameters
10- Dual Supply
- ±5V
- Ib - Input Bias Current
- 7.5uA
- Input Offset Current(Ios)
- 1uA
- Number of Channels
- 2
- Operating Temperature
- 0℃~+70℃
- Output Mode
- TTL
- Output Type
- Push-pull
- Propagation Delay Time
- 9.6ns
- Quiescent Current
- 27mA
- Vos - Input Offset Voltage
- 6mV
Order codes
3- NE521DGLCSC C223582
- NE521DLCSC C3658652
- NE521DR2GLCSC C462927
Pinout
14| Pin | Name | Type |
|---|---|---|
| 1 | IN_1A | Input |
| 2 | IN_1B | Input |
| 3 | NC | Input |
| 4 | OUT_1Y | Input |
| 5 | STB_1G | Input |
| 6 | STB_S | Input |
| 7 | GND | Input |
| 8 | STB_2G | Input |
| 9 | OUT_2Y | Input |
| 10 | NC | Input |
| 11 | IN_2B | Input |
| 12 | IN_2A | Input |
| 13 | V- | Input |
| 14 | V+ | Input |
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Is there a KiCad symbol and footprint for the NE521D?
Yes. The symbol is Operational Amplifiers:NE521 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 NE521D?
SOIC-14, with 14 pins. Its footprint is drawn on this page.
Where is the NE521D datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the NE521D?
JLCPCB lists it as part C223582, with 0 in stock; the sellers' links on this page open their listings.
What can replace the NE521D?
Parts like it in the library: the LM339D by Texas Instruments, the LM339DT by STMicroelectronics, the LM239D by Texas Instruments and the LM339 by Jiangsu Changjing Electronics Technology (CJ). Check their datasheets: a part that fits the footprint may still differ in its ratings.
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