
Overview
The SN74ALS240ANS is a buffer, Driver, Transceiver made by Texas Instruments in a SOIC-20-208mil package with 20 pins. 0℃~+70℃ 15mA 24mA 25mA 4.5V~5.5V 74ALS 8 9ns@5.5V,50pF Tri-State Unidirectional SOIC-20-208mil Buffers, Drivers, Receivers, Transceivers ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:SNJ54ACT244J, from EasyEDA) and its footprint (EasyEDA_Cloud:SOIC-20_L12.6-W5.3-P1.27-LS7.8-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C7495).
Symbol
Footprint
Parameters
11- Channel Type
- Unidirectional
- Current - Output High(IOH)
- 15mA
- Current - Output Low(IOL)
- 24mA
- Features
- Output enable
- Logic Family
- 74ALS
- Number of Bits per Element
- 8
- Operating Temperature
- 0℃~+70℃
- Propagation Delay
- 9ns@5.5V,50pF
- Quiescent Current
- 25mA
- Voltage - Supply
- 4.5V~5.5V
- output type
- Tri-State
Order codes
1- SN74ALS240ANSRLCSC C7495
Pinout
20| Pin | Name | Type |
|---|---|---|
| 1 | 1OE# | Unspecified |
| 2 | 1A1 | Unspecified |
| 3 | 2Y4 | Unspecified |
| 4 | 1A2 | Unspecified |
| 5 | 2Y3 | Unspecified |
| 6 | 1A3 | Unspecified |
| 7 | 2Y2 | Unspecified |
| 8 | 1A4 | Unspecified |
| 9 | 2Y1 | Unspecified |
| 10 | GND | Unspecified |
| 11 | 2A1 | Unspecified |
| 12 | 1Y4 | Unspecified |
| 13 | 2A2 | Unspecified |
| 14 | 1Y3 | Unspecified |
| 15 | 2A3 | Unspecified |
| 16 | 1Y2 | Unspecified |
| 17 | 2A4 | Unspecified |
| 18 | 1Y1 | Unspecified |
| 19 | 2OE# | Unspecified |
| 20 | VCC | Unspecified |
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Is there a KiCad symbol and footprint for the SN74ALS240ANS?
Yes. The symbol is EasyEDA_Cloud:SNJ54ACT244J and the footprint EasyEDA_Cloud:SOIC-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 SN74ALS240ANS?
SOIC-20-208mil, with 20 pins. Its footprint is drawn on this page.
Where is the SN74ALS240ANS datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the SN74ALS240ANS?
JLCPCB lists it as part C7495, with 0 in stock; the sellers' links on this page open their listings.
What can replace the SN74ALS240ANS?
Parts like it in the library: the SN74AHCT541NS by Texas Instruments, the SN74ALS540NSR by Texas Instruments and the SN74BCT240NSR by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
3SN74AHCT541NS
SOIC-20-208mil-40℃~+125℃ 4.5V~5.5V 40uA 6.5ns@5V,15pF 74AHCT 8 8mA 8mA Output enable TTL Compatible CMOS Tri-State SOIC-20-208mil Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffer/Driver/TransceiverSN74ALS540NSR
SOIC-20-208mil0℃~+70℃ 1 15mA 19mA 24mA 4.5V~5.5V 74ALS 8 Tri-State Unidirectional SOIC-20-208mil Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffer/Driver/TransceiverSN74BCT240NSR
SOIC-20-208mil0℃~+70℃ 1 15mA 4.5V~5.5V 64mA 74BCT 8 9mA Tri-State Unidirectional SOIC-20-208mil Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffer/Driver/Transceiver