2 layers630 × 300 mm
2 layers200 × 100 mm
DAM Circuit
Magdamit173/DAM_Circuitry- Size
- 200 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 103
- Nets
- 102
- Pads
- 443
- Tracks, vias
- 2,579, 252
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 2 Jun 2026
- Updated
- 7 Aug 2026
Overview
DAM Circuit is an open-source printed circuit board by Magdamit173, from the Magdamit173/DAM_Circuitry repository on GitHub. It is a 2-layer board of 200 × 100 mm with 103 parts on 102 nets, routed with 2,579 tracks and 252 vias.
It is built around the 74LS125DC, 74LS85DC and 74LS04PC, with the 74LS157PC, 74LS32SC and SM420561N among its other parts. Its parts include 39 resistors, 29 ICs, 20 capacitors, 3 connectors and 2 diodes.
Main components
1074LS125DC
-0℃~+70℃ 1 10ns@5.5V,50pF 15mA 18mA 24mA 4 4.5V~5.5V 74LS Power-off isolation、Output enable Tri-State Unidirectional - Buffers, Drivers, Receivers, TransceiversTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
74LS85DC
CDIP-16-55℃~+125℃ 10mA 24ns Four channels TTL CDIP-16 Comparators ROHSTexas InstrumentsComparators
74LS04PC
PDIP-140℃~+70℃ 4.75V~5.25V 6 6.6mA 74LS PDIP-14 InvertersonsemiInverters
74LS157PC
PDIP-160℃~+70℃ 4.75V~5.25V Single Supply PDIP-16 Signal Switches, Multiplexers, Decoders ROHSTexas InstrumentsSignal Switches, Multiplexers, Decoders
74LS32SC
-- Logic Gates ROHSTexas InstrumentsLogic Gates
SM420561N
插件-20℃~+80℃ 0.56 1 12.6mm 19mm 25mcd 2V 50mW 7 Segment 8mm Common Cathode Red 插件 LED Segment Displays ROHSARKLEDLED Segment Displays74LS175PC
PDIP-160℃~+70℃ 1 10ns 18mA 25ns@5V,15pF 30MHz 4 4.75V~5.25V 5ns 74LS Series Asynchronous Complementary type D-Type Reset Rising Edge PDIP-16 Flip Flops ROHSTexas InstrumentsFlip Flops74LS20P-E
DIP-14-20℃~+75℃ 15ns@5V,15pF 2 2.7V 2V 4 4.75V~5.25V 400mV、500mV 400uA 74LS 800mV 8mA NAND Gate DIP-14 Logic Gates ROHSRenesas ElectronicsLogic Gates74LS21PC
DIP-140℃~+70℃ 18ns@5V,50pF 2 2.7V~3.4V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA AND Gate DIP-14 Logic Gates ROHSonsemiLogic Gates
IRLZ44N
TO-22055V 47A N-Channel HEXFET® Power MOSFETInfineon TechnologiesUncategorised
Parts
103| Qty | Value | Footprint | References |
|---|---|---|---|
| 19 | 100 nF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2, C3, C4, C5, C6, C10, C11, C12, C13, C14, C15, C16, C17, C18, C20 +3 |
| 14 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R4, R6, R8, R10, R12, R14, R16, R18, R20, R34, R35, R36, R39 |
| 13 | 330R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, R32, R33 |
| 12 | 100R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R3, R5, R7, R9, R11, R13, R15, R17, R19, R37, R38 |
| 10 | A1104xLH | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | U17, U18, U19, U20, U21, U22, U23, U24, U25, U26 |
| 4 | 74LS85 | Package_DIP:DIP-16_W7.62mm | U4, U8, U14, U15 |
| 2 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1, D2 |
| 2 | 74LS04 | Package_DIP:DIP-14_W7.62mm | U5, U7 |
| 2 | 74LS157 | Package_DIP:DIP-16_W7.62mm | U3, U9 |
| 2 | 74LS32 | Package_DIP:DIP-14_W7.62mm | U6, U16 |
| 2 | IRLZ44N | Package_TO_SOT_THT:TO-220-3_Vertical | Q1, Q2 |
| 2 | SM420561N | Display_7Segment:7SegmentLED_LTS6760_LTS6780 | U27, U28 |
| 2 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW1, SW2 |
| 2 | Screw_Terminal_01x02 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J1, J2 |
| 1 | 10 uF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C19 |
| 1 | 74LS125 | Package_DIP:DIP-14_W7.62mm | U11 |
| 1 | 74LS147 | Package_DIP:DIP-16_W7.62mm | U1 |
| 1 | 74LS175 | Package_DIP:DIP-16_W7.62mm | U2 |
| 1 | 74LS20 | Package_DIP:DIP-14_W7.62mm | U12 |
| 1 | 74LS21 | Package_DIP:DIP-14_W7.62mm | U13 |
| 1 | 74LS48 | Package_DIP:DIP-16_W7.62mm | U10 |
| 1 | Buzzer | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | BZ1 |
| 1 | LM7805_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U29 |
| 1 | Power Source (12V) | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J3 |
The 98 most common of 103 parts.
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Questions
How big is the DAM Circuit PCB?
It measures 200 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the DAM Circuit use?
103 parts, built around the 74LS125DC, 74LS85DC, 74LS04PC and 74LS157PC. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the DAM Circuit KiCad files?
From the Magdamit173/DAM_Circuitry repository on GitHub, at the commit this page was made from: the board is DAM_Circuit/DAM_Circuit.kicad_pcb and its schematic DAM_Circuit/DAM_Circuit.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DAM Circuit design in my own project?
Its repository states no licence, so its author keeps all rights: ask Magdamit173 before reusing the design.