6 layers313 × 259.5 mm
Open8-vga motherboard
adham404/Open8-VGA
An 8-bit computer from 74HC logic: microcoded CPU, VGA, PS/2, on-board editor and assembler. Play it in your browser.
322 parts3MIT
Overview
The CD74HC08E is a logic Gate made by Texas Instruments in a PDIP-14 package with 14 pins. -55℃~+125℃ 1.5V~4.2V 1.9V、3.7V、5.2V 15ns@6V,50pF 2 2V~6V 2uA 4 400mV 5.2mA 5.2mA 500mV~1.8V 74HC Series AND Gate PDIP-14 Logic Gates ROHS.
PCBKit's library has its KiCad symbol (74xx:74LS08, from KiCad's library) and its footprint (Package_DIP:DIP-14_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. 4 are in stock at JLCPCB (part C2865550). 7 open-source boards in 4 repositories on GitHub use it.
Symbol
Footprint
Parameters
18- Current - Output High(IOH)
- 5.2mA
- Current - Output Low(IOL)
- 5.2mA
- Input Logic Level - High
- 1.5V~4.2V
- Input Logic Level - Low
- 500mV~1.8V
- Input Number
- 2
- Input type
- StandardCMOS
- Inputs per Gates
- 2
- Logic Type
- AND Gate
- Number of Channels
- 4
- Number of Gates
- 4
- Operating Temperature
- -55℃~+125℃
- Output Logic Level - High
- 3.7V
- Output Logic Level - Low
- 400mV
- Propagation Delay
- 15ns@6V,50pF
- Quiescent Current
- 2uA
- Series
- 74HC Series
- Voltage - Supply
- 2V~6V
- output type
- Push-pull
Order codes
1- CD74HC08ELCSC C2865550
Pinout
14| Pin | Name | Type |
|---|---|---|
| 1 | — | Input |
| 2 | — | Input |
| 3 | — | Output |
| 4 | — | Input |
| 5 | — | Input |
| 6 | — | Output |
| 7 | GND | Power in |
| 8 | — | Output |
| 9 | — | Input |
| 10 | — | Input |
| 11 | — | Output |
| 12 | — | Input |
| 13 | — | Input |
| 14 | VCC | Power in |
Open-source boards using it
All 7- 2 layers200 × 200 mm
- 2 layers
Alarm clock pcb
BlakeWooley/alarm_clock_pcb
KiCAD schematics and other documents for a custom alarm clock PCB that I designed without any microcontroller.
12 parts - 2 layers117.5 × 99.7 mm
- 2 layers200 × 200 mm
- 2 layers200 × 200 mm
- 2 layers200 × 200 mm
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<iframe src="https://pcbkit.io/embed/parts/ti/CD74HC08E" title="CD74HC08E 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/CD74HC08E.jpg" alt="CD74HC08E" width="1200" height="900">[](https://pcbkit.io/parts/ti/CD74HC08E)Questions
Is there a KiCad symbol and footprint for the CD74HC08E?
Yes. The symbol is 74xx:74LS08 and the footprint Package_DIP:DIP-14_W8.89mm_SMDSocket_LongPads, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the CD74HC08E?
PDIP-14, with 14 pins. Its footprint is drawn on this page.
Where is the CD74HC08E datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the CD74HC08E?
JLCPCB lists it as part C2865550, with 4 in stock; the sellers' links on this page open their listings.
What can replace the CD74HC08E?
Parts like it in the library: the CD4093BE by Texas Instruments, the CD4078BE by HGSEMI, the CD4093BE(XBLW) by XBLW and the CD4030BE by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the CD74HC08E?
7 boards in 4 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
CD4093BE
PDIP-14-55℃~+125℃ 130ns@15V,50pF 2 3.4mA 3.4mA 3.6V~10.8V 3V~18V 4 4.95V~5V、9.95V~10V、14.95V~15V 4000B Series 4uA 50mV NAND Gate DIP-14 Logic Gates ROHSTexas InstrumentsLogic GatesCD4078BE
DIP-14-40℃~+85℃ 1 1.5V、3V、4V 110ns@15V,50pF 3.5V、7V、11V 4.95V、9.95V、14.95V 4000 Series 50mV 5V~18V 5uA 6.8mA 6.8mA 8 NOR Gate、OR Gate DIP-14 Logic Gates ROHSHGSEMILogic GatesCD4093BE(XBLW)
DIP-14-40℃~+85℃ 10V 2 2.6mA 3V~15V 4 4uA 50mV 6.8mA 90ns CD4 NAND Gate Schmitt trigger DIP-14 Logic Gates ROHSXBLWLogic GatesCD4030BE
PDIP-14-55℃~+125℃ 1.5V~4V 100ns@15V,50pF 1uA 3.4mA 3.4mA 3.5V~11V 3V~18V 4 4000B Series XOR Gate PDIP-14 Logic Gates ROHSTexas InstrumentsLogic GatesSN74LS20N(LX)
DIP-14-40℃~+105℃ 1.5V~4.2V 15ns@6V,50pF 2 2V~6V 2uA 500mV~1.8V 74LS Series NAND Gate DIP-14 Logic Gates ROHSlingxingicLogic GatesCD4082BE(XBLW)
DIP-14-40℃~+105℃ 2 2.6mA 3.5V、7V、11V 3V 3V~15V 4 500nA 50mV 5V 6.8mA 60ns AND Gate CD4 DIP-14 Logic Gates ROHSXBLWLogic GatesSN74LS21N(XBLW)
DIP-14-20℃~+85℃ 1.5V、3.15V、4.2V 1.9V、3.98V、5.48V 100mV、330mV、330mV 19ns@6V,50pF 2 20uA 2V~6V 4 5.2mA 5.2mA 500mV、1.35V、1.8V 74LS AND Gate DIP-14 Logic Gates ROHSXBLWLogic GatesSN74HC13N(LX)
DIP-14-40℃~+125℃ 1.9V~5.34V 100mV~330mV 12ns@6V,50pF 2 20uA 2V~6V 4 4mA 4mA 74 Series NAND Gate DIP-14 Logic Gates ROHSlingxingicLogic Gates