Maker Pro
Maker Pro

Available alternatives to ULN2004 chip

I

Ignoramus12063

Jan 1, 1970
0
I have looked for various cross references for ULN2004 chips
(ULN2004A, in 14 pin DIP). There is a couple, but none seem to be
easily available commercially, although some google spammer pages
promise "instant quotations". Is there some part number that I missed
that can be bought easily?
 
C

cbm5

Jan 1, 1970
0
Ignoramus12063 said:
I have looked for various cross references for ULN2004 chips
(ULN2004A, in 14 pin DIP). There is a couple, but none seem to be
easily available commercially, although some google spammer pages
promise "instant quotations". Is there some part number that I missed
that can be bought easily?

If you instead look for octal Darlington arrays, you'll find more
similar and pin-compatible chips than you care to know about. Try
Digikey or really any electronics vendor.
 
I

Ignoramus12063

Jan 1, 1970
0
If you instead look for octal Darlington arrays, you'll find more
similar and pin-compatible chips than you care to know about. Try
Digikey or really any electronics vendor.

Thanks a lot. I found digikey part 497-4608-5-ND, it seems like a good
match. I appreciate your help...

i
--
 
I

Ignoramus12063

Jan 1, 1970
0
The only difference between the ULN2004 and the more common ULN2003A
is more series resistance on the input for use with the older high
voltage logic. You can often substitute a ULN2003 (which will draw
substantially more input current) or add an external 7.5K series
resistor if you like.

But Digikey has almost 10,000 TI and Toshiba UL2004A's (DIP package)
in stock, so using the original part number shouldn't be a problem.

Spehro, based on what I know. you are 100% right. What do you think
about 497-4608-5-ND (E-ULN2004A), it seems like a perfect
replacement. Am I correct or am I mistaken? Thanks a lot, as always.

i
 
T

Tim Shoppa

Jan 1, 1970
0
Ignoramus12063 said:
I have looked for various cross references for ULN2004 chips
(ULN2004A, in 14 pin DIP). There is a couple, but none seem to be
easily available commercially, although some google spammer pages
promise "instant quotations". Is there some part number that I missed
that can be bought easily?

You need to revise your requirements to match reality. There are lots
of makers of ULN2004's (Allegro, TI, Toshiba, ST Micro all majorly
distributed through Digikey, Allied, Newark, etc.), but they're all 16
pin packages.

Maybe those distributors that will sell you a 14 pin version do it with
a bandsaw?

ULN2003's are even more widely available (slightly different drive
requirements).

Tim.
 
I

Ignoramus12063

Jan 1, 1970
0
You need to revise your requirements to match reality. There are lots
of makers of ULN2004's (Allegro, TI, Toshiba, ST Micro all majorly
distributed through Digikey, Allied, Newark, etc.), but they're all 16
pin packages.

Yes, I was wrong, I needed 16 dip, not 14 dip as I wrongly said.
Maybe those distributors that will sell you a 14 pin version do it with
a bandsaw?

ULN2003's are even more widely available (slightly different drive
requirements).

I found 497-4608-5-ND at digikey... I think that it matches what I
need... Thanks a lot...

i
 
S

Spehro Pefhany

Jan 1, 1970
0
I have looked for various cross references for ULN2004 chips
(ULN2004A, in 14 pin DIP). There is a couple, but none seem to be
easily available commercially, although some google spammer pages
promise "instant quotations". Is there some part number that I missed
that can be bought easily?

The only difference between the ULN2004 and the more common ULN2003A
is more series resistance on the input for use with the older high
voltage logic. You can often substitute a ULN2003 (which will draw
substantially more input current) or add an external 7.5K series
resistor if you like.

But Digikey has almost 10,000 TI and Toshiba UL2004A's (DIP package)
in stock, so using the original part number shouldn't be a problem.


Best regards,
Spehro Pefhany
 
S

Spehro Pefhany

Jan 1, 1970
0
Spehro, based on what I know. you are 100% right. What do you think
about 497-4608-5-ND (E-ULN2004A), it seems like a perfect
replacement. Am I correct or am I mistaken? Thanks a lot, as always.

i

You are correct, that one is fine, but you might as well use the
Toshiba part: ULN2004AP-ND and save yourself USD0.47/ea (half the
price).


Best regards,
Spehro Pefhany
 
I

Ignoramus12063

Jan 1, 1970
0
You are correct, that one is fine, but you might as well use the
Toshiba part: ULN2004AP-ND and save yourself USD0.47/ea (half the
price).

This is great, thank you! I added it to my order.

i
 
P

Pooh Bear

Jan 1, 1970
0
Ignoramus12063 said:
I have looked for various cross references for ULN2004 chips
(ULN2004A, in 14 pin DIP). There is a couple, but none seem to be
easily available commercially, although some google spammer pages
promise "instant quotations". Is there some part number that I missed
that can be bought easily?

What's the matter with using the ULN2004 ?

Graham
 
Top