
Overview
The DM74LS240SJ is a buffers, Drivers, Receivers, Transceiver made by onsemi in a SOIC-20-208mil package with 20 pins. 0℃~+70℃ 15mA 2 24mA 4 4.75V~5.25V 74LS Output enable Schmitt trigger Tri-State Unidirectional SOIC-20-208mil Buffers, Drivers, Receivers, Transceivers.
PCBKit's library has its KiCad symbol (74xx:74LS240, from KiCad's library) and its footprint (EasyEDA_Cloud:SOP-20_L12.6-W5.3-P1.27-LS7.8-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C3756263).
Symbol
Footprint
Parameters
11- Channel Type
- Unidirectional
- Current - Output High(IOH)
- 15mA
- Current - Output Low(IOL)
- 24mA
- Features
- Output enable
- Input type
- Schmitt trigger
- Logic Family
- 74LS
- Number of Bits per Element
- 4
- Number of Elements
- 2
- Operating Temperature
- 0℃~+70℃
- Voltage - Supply
- 4.75V~5.25V
- output type
- Tri-State
Order codes
1- DM74LS240SJLCSC C3756263
Pinout
20| Pin | Name | Type |
|---|---|---|
| 1 | OEa | Input |
| 2 | I0a | Input |
| 3 | O3b | Tri-state |
| 4 | I1a | Input |
| 5 | O2b | Tri-state |
| 6 | I2a | Input |
| 7 | O1b | Tri-state |
| 8 | I3a | Input |
| 9 | O0b | Tri-state |
| 10 | GND | Power in |
| 11 | I0b | Input |
| 12 | O3a | Tri-state |
| 13 | I1b | Input |
| 14 | O2a | Tri-state |
| 15 | I2b | Input |
| 16 | O1a | Tri-state |
| 17 | I3b | Input |
| 18 | O0a | Tri-state |
| 19 | OEb | Input |
| 20 | VCC | Power in |
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/onsemi/DM74LS240SJ" title="DM74LS240SJ in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/onsemi/DM74LS240SJ.jpg" alt="DM74LS240SJ" width="1200" height="900">[](https://pcbkit.io/parts/onsemi/DM74LS240SJ)Questions
Is there a KiCad symbol and footprint for the DM74LS240SJ?
Yes. The symbol is 74xx:74LS240 and the footprint EasyEDA_Cloud:SOP-20_L12.6-W5.3-P1.27-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 DM74LS240SJ?
SOIC-20-208mil, with 20 pins. Its footprint is drawn on this page.
Where is the DM74LS240SJ datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the DM74LS240SJ?
JLCPCB lists it as part C3756263, with 0 in stock; the sellers' links on this page open their listings.
What can replace the DM74LS240SJ?
Parts like it in the library: the SN74LVC244ANS by Texas Instruments, the SN74ALS645A-1NS by Texas Instruments, the SN74LVTH240NSR by Texas Instruments and the MC74ACT240M by MOTOROLA. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
8SN74LVC244ANS
SO-20-208mil-40℃~+125℃ 1.65V~3.6V 2 24mA 24mA 3.9ns@3.3V,50pF 4 40uA 74LVC Tri-State SO-20-208mil Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, TransceiversSN74ALS645A-1NS
SOP-20-208mil0℃~+70℃ 10ns@50pF 15mA 24mA 4.5V~5.5V 58mA 74ALS 8 Bidirectional Tri-State SOP-20-208mil Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, TransceiversSN74LVTH240NSR
SOP-20-208mil-40℃~+85℃ 190uA 2 2.6ns@3.3V,50pF 2.7V~3.6V 32mA 4 64mA 74LVTH Tri-State Unidirectional SOP-20-208mil Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, TransceiversMC74ACT240M
SOIC-20-208mil-40℃~+85℃ 2 24mA 24mA 4 4.5V~5.5V 74ACT 80uA Output enable Tri-State SOIC-20-208mil Buffers, Drivers, Receivers, Transceivers ROHSMOTOROLABuffers, Drivers, Receivers, Transceivers74ABT2244CSJ
SOIC-20-208mil-40℃~+85℃ 15mA 2 32mA 4 4.5V~5.5V 50uA 74ABT Power-off isolation、Output enable、Hot-swap support Tri-State SOIC-20-208mil Buffers, Drivers, Receivers, Transceivers ROHSonsemiBuffers, Drivers, Receivers, Transceivers74ABT244CSJ
SOIC-20-208mil-40℃~+85℃ 2 32mA 4 4.5V~5.5V 50uA 64mA 74ABT Power-off isolation、Output enable、Short-Circuit Protection、Hot-swap support Tri-State SOIC-20-208mil Buffers, Drivers, Receivers, Transceivers ROHSonsemiBuffers, Drivers, Receivers, Transceivers74ABT541CSJX
SOIC-20-208mil-40℃~+85℃ 1 32mA 4.5V~5.5V 50uA 64mA 74ABT 8 Power-off isolation、Output enable、Hot-swap support、Bus collision protection Tri-State Unidirectional SOIC-20-208mil Buffers, Drivers, Receivers, Transceivers ROHSonsemiBuffers, Drivers, Receivers, Transceivers74AC244SJX
SOIC-20-208mil-40℃~+85℃ 2 24mA 24mA 2V~6V 4 5ns@5V,50pF 74AC 80uA Output enable Tri-State Unidirectional SOIC-20-208mil Buffers, Drivers, Receivers, Transceivers ROHSonsemiBuffers, Drivers, Receivers, Transceivers