ULN200y has 7 (16 pin) and ULN280y (18 pin) has 8 switches. Both have a integrated suppression diode for each switch. Each switch is able to provide 500mA.
The "y" is for the different logic families:
- General Purpose, DTL, TTL, PMOS, CMOS
- 14-25V PMOS
- 5V TTL,CMOS
- 6–15V CMOS, PMOS
There are also the ULN2064, ULN2066, ULN2068, ULN2070, ULN2074, ULN2076. This contain only four Darlington switches, but are able to switch up to 1.5A at 50V.