UDN2580 is a good choice. Eight channel, 120mA source drivers.
Allegro has also 32 channel driver ICs with serial port!!! You
can control 32 relays by using just 4-5 TTL signals from your
microprocessors. Check UDN5833 or UDN5832 but I don't
think you can find these chips on K.köy. Try Farnell :wink:
Hi
ULNs are best they are for relays having built in diode for reverse voltage protection. but there is limitation in the VCC voltage. if used with higher VCC voltages then it will heat up. so check for the proper IC
Added after 1 minutes:
From VCC i mean the power you will connect to relay. for smaller currents some times they work with no problems.
I need to drive 32 NEC EA2 relays on my pcb but I want to use minimum number of driver ICs.
I was thinking about driving 4 relays from 1 output of ULN 2803 but from the datasheet I couldnt find out whether its possible or not..Besides I dont have any samples so I cant make any experiments.
Do you have suggestions for such a driver IC? Only requirement is to operate between -40 C to 85 C.
If you have a microcontroller or some kind of digital interface available, you can use TPL9202 made by TI. It can drive 8 relays with some fault protection as well (brown out condition)
I need to drive 32 NEC EA2 relays on my pcb but I want to use minimum number of driver ICs.
I was thinking about driving 4 relays from 1 output of ULN 2803 but from the datasheet I couldnt find out whether its possible or not..Besides I dont have any samples so I cant make any experiments.
Do you have suggestions for such a driver IC? Only requirement is to operate between -40 C to 85 C.