Overview
The SN74LS55D is a logic Gate made by Texas Instruments with 14 pins. 0℃~+70℃ 2 2.7V 20ns@5V,15pF 2V 350mV~500mV 4 4.75V~5.25V 400uA 700mV 74LS 8mA AND-OR-NOT gate - Logic Gates.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:SN74LS55D, from EasyEDA) and its footprint (EasyEDA_Cloud:SOIC-14_L8.6-W3.8-P1.27-LS6.0-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C4471395).
Symbol
Footprint
Parameters
13- Current - Output High(IOH)
- 400uA
- Current - Output Low(IOL)
- 8mA
- Input Logic Level - High
- 2V
- Input Logic Level - Low
- 700mV
- Input Number
- 4
- Logic Type
- AND-OR-NOT gate
- Number of Channels
- 2
- Operating Temperature
- 0℃~+70℃
- Output Logic Level - High
- 2.7V
- Output Logic Level - Low
- 350mV~500mV
- Propagation Delay
- 20ns@5V,15pF
- Series
- 74LS
- Voltage - Supply
- 4.75V~5.25V
Order codes
1- SN74LS55DLCSC C4471395
Pinout
14| Pin | Name | Type |
|---|---|---|
| 1 | A | Unspecified |
| 2 | B | Unspecified |
| 3 | C | Unspecified |
| 4 | D | Unspecified |
| 5 | NC | Unspecified |
| 6 | NC | Unspecified |
| 7 | GND | Unspecified |
| 8 | Y | Unspecified |
| 9 | NC | Unspecified |
| 10 | E | Unspecified |
| 11 | F | Unspecified |
| 12 | G | Unspecified |
| 13 | H | Unspecified |
| 14 | VCC | Unspecified |
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Is there a KiCad symbol and footprint for the SN74LS55D?
Yes. The symbol is EasyEDA_Cloud:SN74LS55D and the footprint EasyEDA_Cloud:SOIC-14_L8.6-W3.8-P1.27-LS6.0-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.
Where is the SN74LS55D datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the SN74LS55D?
JLCPCB lists it as part C4471395, with 0 in stock; the sellers' links on this page open their listings.
What can replace the SN74LS55D?
Parts like it in the library: the CD74AC20M96S2463 by Texas Instruments and the SN74ALS1010AD by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
