Parameter

Value

Outputs

DO1–DO8 (pins 41–48)

Type

optocoupler (Darlington) open collector, sinking to Opto GND; load connected between the load supply and the output

Load supply

up to 24 Vdc, referenced to Opto GND

Output current

25 mA per output, 200 mA total through Opto GND

On-state voltage

≈ 1 V†

Off-state leakage

≤ 1 µA†

Switching time

≈ 10 µs on, ≈ 55 µs off (typical, component data)

Protection

none: no current limit and no flyback diode; fit an external diode across inductive loads (relays, solenoids)

Isolation

field I/O domain

Power-up state

off (Section 8.3)