
Coco2
baldengineer/bit-preserve
Project for capturing vintage, classic, aka old computer schematics in KiCad.

The NE555P is a timers , Counter made by Texas Instruments in a DIP-8 package with 8 pins. 0℃~+70℃ 100kHz 10mA 4.5V~16V DIP-8 555 Timers / Counters ROHS.
PCBKit's library has its KiCad symbol (Timer:NE555P, from KiCad's library) and its footprint (Package_DIP:DIP-8_W7.62mm, from KiCad's library), ready for a KiCad board. 32,275 are in stock at JLCPCB (part C46749). 575 open-source boards in 500 repositories on GitHub use it.
| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Supply voltage VCC | Over operating free-air temperature range; with respect to GND | max 18 V | 4 |
| Output current IO | Source or sink; ±225 mA | max 225 mA | 4 |
| Operating virtual junction temperature TJ | max 150 °C | 4 | |
| Storage temperature Tstg | min -65 · max 150 °C | 4 | |
| Electrostatic discharge V(ESD) | Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001; ±500 V | max 500 V | 4 |
| Electrostatic discharge V(ESD) | Charged device model (CDM), per ANSI/ESDA/JEDEC JS-002; ±1500 V | max 1500 V | 4 |
| Supply voltage VCC | NE555; over operating free-air temperature range | min 4.5 · max 16 V | 4 |
| Output current IO | Source or sink; ±200 mA | max 200 mA | 4 |
| Operating free-air temperature TA | NE555 | min 0 · max 70 °C | 4 |
| Junction-to-ambient thermal resistance RθJA | NE555; P (PDIP), 8 PINS | typ 98.5 °C/W | 5 |
| Junction-to-case (top) thermal resistance RθJC(top) | NE555; P (PDIP), 8 PINS | typ 77.8 °C/W | 5 |
| Junction-to-board thermal resistance RθJB | NE555; P (PDIP), 8 PINS | typ 61 °C/W | 5 |
| Junction-to-top characterization parameter ψJT | NE555; P (PDIP), 8 PINS | typ 43.9 °C/W | 5 |
| Junction-to-board characterization parameter ψJB | NE555; P (PDIP), 8 PINS | typ 60.3 °C/W | 5 |
| THRES voltage level | NE555; VCC = 15V, TA = 25°C | min 8.8 · typ 10 · max 11.2 V | 5 |
| THRES voltage level | NE555; VCC = 5V, TA = 25°C | min 2.4 · typ 3.3 · max 4.2 V | 5 |
| THRES current | VCC = 5V to 15V, TA = 25°C | typ 30 · max 250 nA | 5 |
| TRIG voltage level | NE555; VCC = 15V, TA = 25°C | min 4.5 · typ 5 · max 5.6 V | 5 |
| TRIG voltage level | NE555; VCC = 5V, TA = 25°C | min 1.1 · typ 1.67 · max 2.2 V | 5 |
| TRIG current | NE555; TRIG at 0V, VCC = 5V to 15V, TA = 25°C | typ 0.5 · max 2 uA | 5 |
| RESET voltage level | VCC = 5V to 15V, TA = 25°C | min 0.3 · typ 0.7 · max 1 V | 5 |
| RESET current | RESET at VCC, VCC = 5V to 15V, TA = 25°C | typ 0.1 · max 0.4 mA | 5 |
| RESET current | NE555; RESET at 0V, VCC = 5V to 15V, TA = 25°C | typ -0.4 · max -1.5 mA | 5 |
| DISCH switch off-state current | VCC = 5V to 15V, TA = 25°C | typ 20 · max 100 nA | 5 |
| DISCH switch on-state voltage | NE555; VCC = 5V, IO = 8mA, TA = 25°C | typ 0.15 · max 0.4 V | 5 |
| CONT voltage (open circuit) | NE555; VCC = 15V, TA = 25°C | min 9 · typ 10 · max 11 V | 6 |
| CONT voltage (open circuit) | NE555; VCC = 5V, TA = 25°C | min 2.6 · typ 3.3 · max 4 V | 6 |
| Low-level output voltage | NE555; VCC = 15V, IOL = 10mA, TA = 25°C | typ 0.1 · max 0.25 V | 6 |
| Low-level output voltage | NE555; VCC = 15V, IOL = 50mA, TA = 25°C | typ 0.4 · max 0.75 V | 6 |
| Low-level output voltage | NE555; VCC = 15V, IOL = 100mA, TA = 25°C | typ 2 · max 2.5 V | 6 |
| Low-level output voltage | VCC = 15V, IOL = 200mA, TA = 25°C | typ 2.5 V | 6 |
| Low-level output voltage | NE555; VCC = 5V, IOL = 5mA, TA = 25°C | typ 0.1 · max 0.35 V | 6 |
| Low-level output voltage | NE555; VCC = 5V, IOL = 8mA, TA = 25°C | typ 0.15 · max 0.4 V | 6 |
| High-level output voltage | NE555; VCC = 15V, IOH = –100mA, TA = 25°C | min 12.75 · typ 13.3 V | 6 |
| High-level output voltage | VCC = 15V, IOH = –200mA, TA = 25°C | typ 12.5 V | 6 |
| High-level output voltage | NE555; VCC = 5V, IOH = –100mA, TA = 25°C | min 2.75 · typ 3.3 V | 6 |
| Supply current | NE555; Output low, no load, VCC = 15V, TA = 25°C | typ 10 · max 15 mA | 6 |
| Supply current | NE555; Output low, no load, VCC = 5V, TA = 25°C | typ 3 · max 6 mA | 6 |
| Supply current | NE555; Output high, no load, VCC = 15V, TA = 25°C | typ 9 · max 13 mA | 6 |
| Supply current | NE555; Output high, no load, VCC = 5V, TA = 25°C | typ 2 · max 5 mA | 6 |
| Temperature coefficient of timing interval | NE555; Each timer, monostable, TA = MIN to MAX; VCC = 5V to 15V | typ 50 ppm/°C | 7 |
| Temperature coefficient of timing interval | NE555; Each timer, astable, TA = MIN to MAX; VCC = 5V to 15V | typ 150 ppm/°C | 7 |
| Supply-voltage sensitivity of timing interval | NE555; Each timer, monostable; VCC = 5V to 15V, TA = 25°C | typ 0.1 · max 0.5 %/V | 7 |
| Supply-voltage sensitivity of timing interval | NE555; Each timer, astable; VCC = 5V to 15V, TA = 25°C | typ 0.3 %/V | 7 |
| Output-pulse rise time tr | NE555; CL = 15pF, TA = 25°C, 20% to 80%; VCC = 5V to 15V | typ 100 · max 300 ns | 7 |
| Output-pulse fall time tf | NE555; CL = 15pF, TA = 25°C, 80% to 20%; VCC = 5V to 15V | typ 100 · max 300 ns | 7 |
| Pin | Name | Type |
|---|---|---|
| 1 | GND | Power in |
| 2 | TRIG | Input |
| 3 | OUT | Output |
| 4 | RST | Input |
| 5 | CONT | Passive |
| 6 | THRES | Input |
| 7 | DISCH | Input |
| 8 | VCC | Power in |

baldengineer/bit-preserve
Project for capturing vintage, classic, aka old computer schematics in KiCad.

The-Invent0r/8-bit-Computer-PCB
These are the KiCAD files for my 8-Bit Computer.

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fortinsylvain/MyCpu
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<iframe src="https://pcbkit.io/embed/parts/ti/NE555P" title="NE555P in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/ti/NE555P.jpg" alt="NE555P" width="1200" height="900">[](https://pcbkit.io/parts/ti/NE555P)Yes. The symbol is Timer:NE555P and the footprint Package_DIP:DIP-8_W7.62mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
DIP-8, with 8 pins. Its footprint is drawn on this page.
Texas Instruments publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C46749, with 32,275 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the SA555P by Texas Instruments, the NE555D by Texas Instruments, the NE556N by Texas Instruments and the LM555CMM by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
575 boards in 500 repositories on GitHub; the most starred are listed on this page, with their KiCad files.