ThingMagic Sargas User Guide
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9.2
Electrical Specifications
The electrical specifications are as follows:
Pin
Parameter
Description
Min Max
Unit
Conditions
+5V Supply
IO
Output current
200
mA
User IN 0-1
VIH
HIGH level input
3
30
V
voltage
User IN 0-1
VIL
LOW level input
0
0.8
V
voltage
User IN 0-1
ILI
Input current
5
mA
24V input
User IN 0-1
VI
Input voltage range
0
30
V
No damage
User OUT 0-1
VOH
Output high voltage
V+*
V
10k pull up
User OUT 0-1
VOL
Output low voltage
(V-)+0.5
V
100mA load
User OUT 0-1
VI
Supply voltage range
30
V
(V+) - (V-)
*User-supplied voltage
9.3
Inputs
The two opto-isolated inputs support the following input levels:
V-low (Logic 0) = 0-0.8V
V-high (Logic 1) = 3-30V
5mA max current with 24V input
It is recommended that external devices guarantee a minimum pulse width of at least 100ms.
9.4
Outputs
The two opto-isolated outputs support power sourcing, up to +30V with current sink up to 200mA,
through an external power supply connected between V-GPO and ISO-GND (pins 2 and 7).
Using the MercuryAPI the output signals (see note under Connector Pinout for enumeration
values) can be set as follows:
1) gpoSet(GPIO_#, 1) sets the pin corresponding to the GPIO enumeration to Vhigh (relative to
ISO-GND) by allowing an internal or external voltage to pull the signal up through internal or
external resistors.