2 layers159.9 × 99.9 mm
Hv power supply t reg v2
schenkmi/electronic-projects
misc electronic projects
107 parts6CERN-OHL-W-2.0
2 layers389 × 136.2 mm
LittleSixteen
schenkmi/electronic-projects6misc electronic projects
- Size
- 389 × 136.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 366
- Nets
- 375
- Pads
- 1,631
- Tracks, vias
- 5,995, 622
- Pours
- 56
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 6 Oct 2020
- Updated
- 31 Oct 2026
Overview
LittleSixteen is an open-source printed circuit board by schenkmi, from the schenkmi/electronic-projects repository on GitHub, published under the CERN-OHL-W-2.0 licence. It is a 2-layer board of 389 × 136.2 mm with 366 parts on 375 nets, routed with 5,995 tracks and 622 vias.
It is built around the 74HCT245, 74HCT244D and 74HCT02D, with the 74HCT04D, 74HCT08D and 74HCT139D among its other parts. Its parts include 81 capacitors, 51 resistors, 37 diodes, 23 ICs and 8 transistors. It belongs with the audio and music boards and the FPGA and CPLD boards of this library.
Main components
10
74HCT245
DIP-20-40℃~+85℃ 28ns@4.5V 4.5V~5.5V 6mA 6mA 74HCT 8 8uA Bidirectional TTL-compatible CMOS Tri-State DIP-20 Buffers, Drivers, Receivers, Transceivers ROHSWuxi I-core Elec74 Series
74HCT244D
SO-20-300mil-40℃~+125℃ 13ns@4.5V,50pF 160uA 2 4 4.5V~5.5V 6mA 6mA 74HCT Tri-State Unidirectional SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, Transceivers
74HCT02D
SO-14-40℃~+125℃ 19ns@4.5V,50pF 2 2V 2uA 3.7V 4 4.5V~5.5V 400mV 4mA 4mA 74HCT Series 800mV NOR Gate Overvoltage-tolerant input SOIC-14 Logic Gates ROHSNexperiaGates74HCT04D
SO-14-40℃~+125℃ 1 19ns@4.5V,50pF 2V 2uA 3.7V 4.5V~5.5V 400mV 4mA 4mA 6 74HCT 800mV SO-14 Inverters ROHSNexperiaInverters74HCT08D
SOP-14-40℃~+125℃ 100mV、330mV 16ns@4.5V,15pF 2 2V 3.84V、4.4V 4 4.5V~5.5V 74HCT 800mV AND Gate TTL compatible CMOS SOP-14 Logic Gates ROHSMDDLogic Gates
74HCT139D
SO-16-40℃~+125℃ 160uA 16ns@4.5V,50pF 4.5V~5.5V 4/8 4mA 4mA 74HCT Decoder Single Supply SO-16 Signal Switches, Multiplexers, Decoders ROHSNexperiaSignal Switches, Multiplexers, Decoders
74HCT175D
SOP-16-40℃~+125℃ 1 3.5pF 33ns@4.5V,50pF 4 4.5V~5.5V 49MHz 4mA 4mA 74HCT Series 8uA Complementary D-Type Reset Rising Edge SOP-16 Flip Flops ROHSNexperiaFlip Flops74HCT273D
SOIC-20-300mil-40℃~+125℃ 12ns 3.5pF 30ns@4.5V,50pF 36MHz 3ns 4.5V~5.5V 4mA 5.2mA 74HCT Series 8 8uA D-Type Reset Rising Edge SOIC-20-300mil Flip Flops ROHSNexperiaFlip Flops
2SC1815
SOT-23-55℃~+150℃ 1 NPN 100nA 130 150mA 200mW 250mV 50V 5V 80MHz NPN SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)
2SD880
TO-220Bipolar (BJT)Foshan Blue Rocket Elec
README
README.mdelectronic-projects
misc electronic projects
History
2026.09.19
pre-amp-ECC86/kicad/psu-v6
Large PCB PSU for ECC86 with high side switch. Support LT3080 and LM317. Fix Drain/Source.
2026.09.02
pre-amp-ECC86/kicad/psu-v5
Large PCB PSU for ECC86 with high side switch. Support LT3080 and LM317
2026.08.26
pre-amp-ECC86/kicad/psu-v4
Large PCB PSU for ECC86 without relais. Support LT3080 and LM317
2026.08.23
input-sel-attenuator/software/v9
Power up timer to 64ms wait till voltage is stabilized
2026.08.10
pre-amp-ECC86/kicad/psu-v3
Large PCB PSU for ECC86
2026.08.01
pre-amp-ECC86/kicad/psu-v2
Shrinked and optimized PSU for ECC86
2026.07.22
pre-amp-ECC86/kicad/psu-v1
First version of PSU for ECC86
2026.07.12
pre-amp-ECC86/kicad/v1
First version of ECC86 based pre-amplifier
spdif-recv-ak4118-ak4137/software/spdif-recv-ak4118-ak4137-v4.X
Updated software for V4 PCB
2026.06.05
dac-pcm1702-v1/kicad-psu-v8/
DC/DC for +5V digital path
dac-pcm1702-v1/kicad-asrc-v14
PCB LED fix External LED support
spdif-recv-ak4118-ak4137/kicad/v4
External LED support Change one LDO to TLV1117-3.3 due to power dissipation
2026.05.28
dac-pcm1702-v1/kicad-asrc-v13
PCB re-design with fixed LED ordering
2026.05.27
pre-amp-26A7/ltspice/v2/
New CCS simulation with smaller FETs
2026.05.26
dac-pcm1702-v1/software/spdif-recv-asrc-4392-v12.X
New software for SPDIF ASRC receiver including UART and IR
2026.05.16
dac-pcm1702-v1/kicad-asrc-v12
PSU re-design, UART for debugging, I2C debugging, IR
spdif-recv-ak4118-ak4137/kicad/v3
Add IR support
2026.05.10
spdif-recv-cs8416-ak4137/kicad/v7
Improved power supply, I2S debug, Serial console
spdif-recv-ak4118-ak4137/kicad/v2
Small redesign
2026.04.25
spdif-recv-ak4118-ak4137/kicad/v1
Finalize and ordered
pre-amp-26A7/kicad/v2
Finalize and ordered
2026.03.29
pre-amp-26A7/kicad/v1
Finalize and ordered v1
2026.03.28
lv-psu-dcdc/kicad/fixed-v3
Better thermal management for DC/DC
lv-lownoise-psu/kicad/v7-dcdc-large-cap
Better thermal handling on DC/DC
input-sel-attenuator/kicad/v9-10k-47k
Changed footprint for L1 and C1
2026.03.11
lv-psu-dcdc/kicad/fixed-v2
Eval board with different inductors
hv-psu-discrete/kicad/maida-lt3080-v5
HV PSU with DC/DC for +5V output
2026.03.05
lv-lownoise-psu/kicad/v6-dcdc-large-cap
Finalize v6 with large reservoir cap
2026.02.25
hv-psu-discrete/kicad/maida-lt3080-v5-26A7GT
HV PSU for 26A7 pre-amp
2026.01.13
input-sel-attenuator/software/ir-debug-v3
Update MCC generated code
dac-pcm1792a/software/asrc-pcm1792a-v4.X
Update MCC generated code
dac-pcm1702-v1/software/v8
Update MCC generated code
spdif-recv-cs8416-ak4137/software/spdif-recv-cs8416-ak4137-v5.X
Update MCC generated code
input-sel-attenuator/software/v9
Update MCC generated code
rpi-hat-spdif/kicad/V9
RPI HAT SPDIF Output increase hole diameter to 3.2mm
rpi-hat-spdif/kicad/V9-min
RPI HAT SPDIF Output minized PCB increase hole diameter to 3.2mm
2026.01.01
adapter/spdif/kicad/v2
LVDS SPDIF XMIT with rotated connector
adapter/spdif/kicad/v2b
LVDS SPDIF XMIT with standard connector
rpi-hat-spdif/kicad/V7-min
RPI HAT SPDIF Output minized PCB
rpi-hat-spdif/kicad/V8
RPI HAT SPDIF Output new PCB
2025.12.20
adapter/spdif/kicad/v1
Finalize v1 LVDS SPDIF XMIT
rpi-hat-spdif/kicad/v6
RPI HAT SPDIF Output
rpi-hat-spdif/kicad/v6-min
RPI HAT SPDIF Output minimized
2025.12.08
pre-amp-ECC88/kicad/v9
Finalize and ordered v9
2025.09.29
retro/c64-user-port-led
Finalize v1 of C64 user port LED
2025.09.28
dac-pcm1704/kicad/dac-df1706-pcm1704-v2
Finalize and ordered v2
2025.09.21
dac-pcm1704/kicad/dac-pcm1704-v5
Finalize and ordered v5
dac-pcm1702-v1/kicad-i2s-nos-v7
Finalize and ordered v7
dac-pcm1792a/kicad/v6/
Finalize and ordered v6
2025.09.13
input-sel-attenuator/software/ir-debug-v2
input-sel-attenuator/software/v8
V2.5 2025.09.12 Shiny new push button and saving handling Use volume when doing channel switch.
2025.09.07
lv-lownoise-psu/kicad/v5-dcdc
Finalize and ordered v5
lv-lownoise-psu/kicad/v5-dcdc-large-cap
Finalize and ordered v5 with large reservoir cap
2025.08.25
lt1115-phono-mm-mc/kicad/v6
Finalize and ordered v6
2025.08.23
dac-pcm1702-v1/kicad-psu-v7
Finalize and ordered v7
Parts
366| Qty | Value | Footprint | References |
|---|---|---|---|
| 51 | FERRITE | LittleSixteen:EMI_Filter | FB1, FB2, FB12, FB14, FB15, FB16, FB17, FB18, FB19, FB22, FB24, FB25, FB26, FB27, FB28, FB29 +35 |
| 38 | 100n | Capacitor_THT:C_Disc_D8.0mm_W2.5mm_P5.00mm | C11, C21, C22, C26, C28, C29, C30, C33, C34, C39, C40, C100, C102, C109, C112, C114 +22 |
| 34 | 1n4148 | LittleSixteen:D_DO-35_SOD27_P5.08mm_Vertical_KathodeUp | D1, D2, D3, D4, D5, D6, D7, D10, D11, D12, D70, D71, D72, D73, D74, D75 +18 |
| 10 | 10u/25V | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C3, C4, C16, C18, C19, C31, C52, C62, C83, C96 |
| 9 | MountingHole_Pad | MountingHole:MountingHole_3.7mm_Pad | H1, H2, H3, H4, H6, H7, H15, H16, H17 |
| 8 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R1, R23, R33, R41, R42, R97, R98, R99 |
| 8 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R8, R24, R28, R32, R34, R43, R82, R86 |
| 7 | 2SC1815 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q1, Q2, Q3, Q6, Q81, Q82, Q83 |
| 6 | 470u/25V | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C60, C95, C101, C110, C111, C113 |
| 5 | 470p | Capacitor_THT:C_Disc_D8.0mm_W2.5mm_P5.00mm | C23, C24, C25, C50, C57 |
| 5 | DT1042 | Package_SO:TSOP-6_1.65x3.05mm_P0.95mm | U91, U92, U93, U94, U95 |
| 4 | 100 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R29, R30, R31, R89 |
| 4 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R11, R21, R25, R36 |
| 4 | 150 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R85, R87, R88, R90 |
| 4 | 220n/25V | Capacitor_THT:C_Disc_D8.0mm_W2.5mm_P5.00mm | C103, C104, C105, C106 |
| 4 | 3.3k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R12, R19, R81, R93 |
| 4 | 400m | LittleSixteen:Fuse_Bourns | F3, F4, F6, F7 |
| 4 | 470 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R3, R7, R13, R14 |
| 4 | FERRITE | Inductor_THT:L_Radial_D6.0mm_P4.00mm | L1, L2, L3, L80 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.7mm_Pad | H11, H12, H13, H14 |
| 3 | 250m | LittleSixteen:Fuse_Bourns | F1, F2, F5 |
| 3 | 270p | LittleSixteen:EMI_Filter | EM3, EM4, EM5 |
| 3 | DO NOT MOUNT | LittleSixteen:EMI_Filter | FB38, FB39, FB40 |
| 3 | GAL16V8 | LittleSixteen:DIP-20_W7.62mm_Socket_LongPads | U19, U26, U28 |
| 2 | 100 | Resistor_THT:R_Array_SIP12 | RP90, RP91 |
| 2 | 100p | Capacitor_THT:C_Disc_D8.0mm_W2.5mm_P5.00mm | C32, C84 |
| 2 | 10n | Capacitor_THT:C_Disc_D8.0mm_W2.5mm_P5.00mm | C15, C20 |
| 2 | 150p | Capacitor_THT:C_Disc_D8.0mm_W2.5mm_P5.00mm | C14, C82 |
| 2 | 1n4001 | LittleSixteen:D_DO-41_SOD81_P5.08mm_Vertical_KathodeUp | D87, D88 |
| 2 | 2.2n | Capacitor_THT:C_Disc_D8.0mm_W2.5mm_P5.00mm | C47, C48 |
| 2 | 220 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R4, R37 |
| 2 | 220p | Capacitor_THT:C_Disc_D8.0mm_W2.5mm_P5.00mm | C13, C86 |
| 2 | 22n | Capacitor_THT:C_Disc_D8.0mm_W2.5mm_P5.00mm | C45, C46 |
| 2 | 240 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R26, R27 |
| 2 | 3.3k | Resistor_THT:R_Array_SIP6 | RP2, RP3 |
| 2 | 330p | Capacitor_THT:C_Disc_D8.0mm_W2.5mm_P5.00mm | C81, C87 |
| 2 | 4.7k | Resistor_THT:R_Array_SIP9 | RP5, RP8 |
| 2 | 5.6k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R80, R83 |
| 2 | 74HCT02 | LittleSixteen:DIP-14_W7.62mm_Socket_LongPads | U5, U12 |
| 2 | 74HCT245 | LittleSixteen:DIP-20_W7.62mm_Socket_LongPads | U27, U29 |
| 2 | LOGO | LittleSixteen:Sw16 | G***, G*** |
| 2 | MOS_6529 | LittleSixteen:DIP-20_W7.62mm_Socket_LongPads | U13, U22 |
| 2 | MountingHole_Pad | MountingHole:MountingHole_4.3mm_M4_Pad | H9, H10 |
| 1 | 1.5A | Fuse:Fuseholder_Cylinder-5x20mm_Stelvio-Kontek_PTF78_Horizontal_Open | F100 |
| 1 | 1.5k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R6 |
| 1 | 1.8432M | Crystal:Crystal_HC49-U_Vertical | Y2 |
| 1 | 10 2.5W | Resistor_THT:R_Axial_DIN0414_L11.9mm_D4.5mm_P5.08mm_Vertical | R96 |
| 1 | 100 | Resistor_THT:R_Array_SIP10 | RP6 |
| 1 | 10k | Resistor_THT:R_Array_SIP9 | RP7 |
| 1 | 10k | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | RV3 |
| 1 | 10u | Inductor_THT:L_Axial_L7.0mm_D3.3mm_P12.70mm_Horizontal_Fastron_MICC | L81 |
| 1 | 12k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R9 |
| 1 | 17.734475M | Crystal:Crystal_HC49-U_Horizontal_1EP_style2 | Y1 |
| 1 | 180k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R35 |
| 1 | 18k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R5 |
| 1 | 1M | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | RV4 |
| 1 | 1k | Resistor_THT:R_Array_SIP6 | RP1 |
| 1 | 1k | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | RV1 |
| 1 | 1n | Capacitor_THT:C_Disc_D8.0mm_W2.5mm_P5.00mm | C49 |
| 1 | 1u/16V | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C17 |
| 1 | 220 | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | RV2 |
| 1 | 2200u/25V | LittleSixteen:Axial_Cap_Dual | C107 |
| 1 | 22p | Capacitor_THT:C_Disc_D8.0mm_W2.5mm_P5.00mm | C12 |
| 1 | 23128_BASIC | LittleSixteen:DIP-28_W15.24mm_Socket_LongPads | U3 |
| 1 | 23128_KERNAL | LittleSixteen:DIP-28_W15.24mm_Socket_LongPads | U4 |
| 1 | 2SD880 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabUp | Q5 |
| 1 | 3.3k | Resistor_THT:R_Array_SIP9 | RP4 |
| 1 | 33 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R84 |
| 1 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R102 |
| 1 | 4.7k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R2 |
| 1 | 40p | LittleSixteen:VariCap | CT1 |
| 1 | 47k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R20 |
| 1 | 6.8V | LittleSixteen:D_DO-35_SOD27_P5.08mm_Vertical_KathodeUp_Zener | D13 |
| 1 | 74HCT04 | LittleSixteen:DIP-14_W7.62mm_Socket_LongPads | U21 |
| 1 | 74HCT08 | LittleSixteen:DIP-14_W7.62mm_Socket_LongPads | U90 |
| 1 | 74HCT139 | Package_DIP:DIP-16_W7.62mm_Socket_LongPads | U17 |
| 1 | 74HCT139 | LittleSixteen:DIP-16_W7.62mm_Socket_LongPads | U14 |
| 1 | 74HCT175 | LittleSixteen:DIP-16_W7.62mm_Socket_LongPads | U15 |
| 1 | 74HCT244 | LittleSixteen:DIP-20_W7.62mm_Socket_LongPads | U18 |
| 1 | 74HCT273 | LittleSixteen:DIP-20_W7.62mm_Socket_LongPads | U20 |
The 304 most common of 366 parts.
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Questions
How big is the LittleSixteen PCB?
It measures 389 × 136.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LittleSixteen use?
366 parts, built around the 74HCT245, 74HCT244D, 74HCT02D and 74HCT04D. 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 LittleSixteen KiCad files?
From the schenkmi/electronic-projects repository on GitHub, at the commit this page was made from: the board is retro/LittleSixteen/LittleSixteen.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the LittleSixteen design in my own project?
Its repository publishes it under the CERN-OHL-W-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).