2 layers400.9 × 280.5 mm
2 layers145.4 × 95.5 mm
Clock Circuit for 7400 project
- Size
- 145.4 × 95.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 63
- Nets
- 59
- Pads
- 250
- Tracks, vias
- 492, 21
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 8 Aug 2019
- Updated
- 30 Aug 2019
Overview
Clock is an open-source printed circuit board by bit4man, from the bit4man/clock-circuit repository on GitHub. It is a 2-layer board of 145.4 × 95.5 mm with 63 parts on 59 nets, routed with 492 tracks and 21 vias.
It is built around the 74LS00SC, 74LS02PC and 74LS04PC, with the 74LS151PC, 74LS32SC and 74LS93SC among its other parts. Its parts include 16 resistors, 16 diodes, 13 capacitors, 10 ICs and 4 switches. It belongs with the lEDs and displays boards of this library.
Main components
7
74LS00SC
-0℃~+70℃ 15ns@5V,50pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA NAND Gate - Logic Gates ROHSTexas InstrumentsLogic Gates
74LS02PC
DIP-140℃~+70℃ 15ns@5V,15pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA 8mA NOR Gate DIP-14 Logic Gates ROHSonsemiLogic Gates74LS04PC
PDIP-140℃~+70℃ 4.75V~5.25V 6 6.6mA 74LS PDIP-14 InvertersonsemiInverters
74LS151PC
DIP-160℃~+70℃ 12.5ns 4.75V~5.25V 400uA 6mA 74LS 8mA Tri-state output DIP-16 Signal Switches, Multiplexers, Decoders ROHSonsemiSignal Switches, Multiplexers, Decoders
74LS32SC
-- Logic Gates ROHSTexas InstrumentsLogic Gates74LS93SC
-- Counters, DividersTexas InstrumentsCounters, Dividers
LM7805
TO-2630℃~+125℃ 1 1A 20V 2V 42uV 5V 62dB@(120Hz) 8mA Fixed Over Temperature Protection、Short Circuit Protection Positive TO-263 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSYONGYUTAIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdclock-circuit
Parts
63| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | LED_Small | LED_THT:LED_D3.0mm | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15 |
| 5 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R8, R9, R13, R15 |
| 5 | 10pF | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C8, C9, C10, C11, C13 |
| 3 | 100K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R5, R12 |
| 3 | 150 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R3, R10 |
| 3 | 2K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6, R7, R11 |
| 2 | 30pF | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C5, C6 |
| 2 | 74LS00 | Package_DIP:DIP-14_W7.62mm_Socket | U5, U9 |
| 1 | 100nF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C4 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C2 |
| 1 | 10uF | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C12 |
| 1 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R14 |
| 1 | 1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R16 |
| 1 | 1uF | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C7 |
| 1 | 1uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C1 |
| 1 | 330nF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C3 |
| 1 | 470 | Resistor_THT:R_Array_SIP6 | RN2 |
| 1 | 500K | Potentiometer_THT:Potentiometer_ACP_CA9-H5_Horizontal | RV1 |
| 1 | 74LS02 | Package_DIP:DIP-14_W7.62mm_Socket | U7 |
| 1 | 74LS04 | Package_DIP:DIP-14_W7.62mm_Socket | U8 |
| 1 | 74LS151 | Package_DIP:DIP-16_W7.62mm_Socket | U4 |
| 1 | 74LS32 | Package_DIP:DIP-14_W7.62mm_Socket | U6 |
| 1 | 74LS93 | Package_DIP:DIP-14_W7.62mm_Socket | U2 |
| 1 | Barrel_Jack | Connector_BarrelJack:BarrelJack_CUI_PJ-063AH_Horizontal | J1 |
| 1 | CLK_SEL | Button_Switch_THT:SW_DIP_SPSTx02_Slide_9.78x7.26mm_W7.62mm_P2.54mm | SW2 |
| 1 | D | Diode_THT:D_DO-41_SOD81_P7.62mm_Horizontal | D16 |
| 1 | LM555 | Package_DIP:DIP-8_W7.62mm_Socket | U10 |
| 1 | LM556 | Package_DIP:DIP-14_W7.62mm_Socket | U3 |
| 1 | LM7805 | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
| 1 | R_Network04 | Resistor_THT:R_Array_SIP5 | RN1 |
| 1 | SW_Clock | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | SW_MANUAL_CLK | Button_Switch_THT:SW_PUSH_6mm | SW4 |
| 1 | SW_Step | Button_Switch_THT:SW_PUSH_6mm | SW3 |
Questions
How big is the Clock PCB?
It measures 145.4 × 95.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Clock use?
63 parts, built around the 74LS00SC, 74LS02PC, 74LS04PC and 74LS151PC. 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 Clock KiCad files?
From the bit4man/clock-circuit repository on GitHub, at the commit this page was made from: the board is clock/clock.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Clock design in my own project?
Its repository states no licence, so its author keeps all rights: ask bit4man before reusing the design.
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