Highest current sink, TTL, HC, HS etc ????

[MrEd]

Does anyone know off hand which has the highest current sink. TTL, HC, C, etc. I need it to multiplex a couple of leds at highest possible sinking current without using a ULN2908 etc. Would like to stick with my latch without additional driver chip to make the leds shine a bit more.

MrEd

 

[beuch]

Hi,

I think AC has a high sink current.

 

[brankob]

Check also F series...

 

[cadb0y]

HC has highest current sink but none can drive 50 ohms, you double them up, ok?

 

[Crisbe]

I'm not really sure what kind have the highest current, but AC is a good choice - quite fast and survives much.

 

[bunalmis]

TTL

 

[aalbu]

Depends on your application. Usually ABT and FCT families are the best. Check www.idt.com. They have good circuits.

 

[flatulent]

check data sheet

Each family has line driver type gates that have higher than usual output current. If I remember right, HC drivers have 50 mA per gate or 300 Per DIP. You could always use a discrete transistor which would probably be cheaper.