Overview
The CD74HCT273EX is a flip Flop made by Texas Instruments in a PDIP-20 package with 20 pins. -55℃~+125℃ 1 15ns 30ns@4.5V,50pF 4.5V~5.5V 4mA 74HCT Series 8 8uA Reset Rising Edge PDIP-20 Flip Flops.
PCBKit's library has its KiCad symbol (74xx:74HCT273, from KiCad's library) and its footprint (Package_DIP:DIP-20_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3826086).
Symbol
Footprint
Parameters
11- Current - Output High(IOH)
- 4mA
- Function
- Reset
- Number of Bits per Element
- 8
- Number of Elements
- 1
- Operating Temperature
- -55℃~+125℃
- Propagation Delay
- 30ns@4.5V,50pF
- Quiescent Current
- 8uA
- Series
- 74HCT Series
- Setup Time
- 15ns
- Trigger Type
- Rising Edge
- Voltage - Supply
- 4.5V~5.5V
Order codes
1- CD74HCT273EXLCSC C3826086
Pinout
20| Pin | Name | Type |
|---|---|---|
| 1 | Mr | Input |
| 2 | Q0 | Output |
| 3 | D0 | Input |
| 4 | D1 | Input |
| 5 | Q1 | Output |
| 6 | Q2 | Output |
| 7 | D2 | Input |
| 8 | D3 | Input |
| 9 | Q3 | Output |
| 10 | GND | Power in |
| 11 | Cp | Input |
| 12 | Q4 | Output |
| 13 | D4 | Input |
| 14 | D5 | Input |
| 15 | Q5 | Output |
| 16 | Q6 | Output |
| 17 | D6 | Input |
| 18 | D7 | Input |
| 19 | Q7 | Output |
| 20 | VCC | Power in |
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Is there a KiCad symbol and footprint for the CD74HCT273EX?
Yes. The symbol is 74xx:74HCT273 and the footprint Package_DIP:DIP-20_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 CD74HCT273EX?
PDIP-20, with 20 pins. Its footprint is drawn on this page.
Where is the CD74HCT273EX datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the CD74HCT273EX?
JLCPCB lists it as part C3826086, with 0 in stock; the sellers' links on this page open their listings.
What can replace the CD74HCT273EX?
Parts like it in the library: the 74HC273N-HX by ZHHXDZ, the 74HC574N-HX by ZHHXDZ, the TC74HC273APF by Toshiba and the CD74AC574E by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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