
Overview
The CD54HC688F3A is a digital Comparator made by Texas Instruments in a CDIP-20 package with 20 pins. -55℃~+125℃ 29ns@6V,50pF 2V~6V 5.2mA 5.2mA 8 8uA A=B Active Low CDIP-20 Digital Comparators.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:5962-8685701RA, from EasyEDA) and its footprint (EasyEDA_Cloud:CDIP-20_L27.0-W6.7-P2.54-LS7.8-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C3659095).
Symbol
Footprint
Parameters
9- Current - Output High(IOH)
- 5.2mA
- Current - Output Low(IOL)
- 5.2mA
- Number of Channels
- 8
- Operating Temperature
- -55℃~+125℃
- Output
- Active Low
- Output Function
- A=B
- Propagation Delay
- 29ns@6V,50pF
- Quiescent Current
- 8uA
- Voltage - Supply
- 2V~6V
Order codes
1- CD54HC688F3ALCSC C3659095
Pinout
20| Pin | Name | Type |
|---|---|---|
| 1 | E# | Unspecified |
| 2 | A0 | Unspecified |
| 3 | B0 | Unspecified |
| 4 | A1 | Unspecified |
| 5 | B1 | Unspecified |
| 6 | A2 | Unspecified |
| 7 | B2 | Unspecified |
| 8 | A3 | Unspecified |
| 9 | B3 | Unspecified |
| 10 | GND | Unspecified |
| 11 | A4 | Unspecified |
| 12 | B4 | Unspecified |
| 13 | A5 | Unspecified |
| 14 | B5 | Unspecified |
| 15 | A6 | Unspecified |
| 16 | B6 | Unspecified |
| 17 | A7 | Unspecified |
| 18 | B7 | Unspecified |
| 19 | Y | Unspecified |
| 20 | VCC | Unspecified |
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/ti/CD54HC688F3A" title="CD54HC688F3A 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/CD54HC688F3A.jpg" alt="CD54HC688F3A" width="1200" height="900">[](https://pcbkit.io/parts/ti/CD54HC688F3A)Questions
Is there a KiCad symbol and footprint for the CD54HC688F3A?
Yes. The symbol is EasyEDA_Cloud:5962-8685701RA and the footprint EasyEDA_Cloud:CDIP-20_L27.0-W6.7-P2.54-LS7.8-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the CD54HC688F3A?
CDIP-20, with 20 pins. Its footprint is drawn on this page.
Where is the CD54HC688F3A datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the CD54HC688F3A?
JLCPCB lists it as part C3659095, with 0 in stock; the sellers' links on this page open their listings.