Electrical Characteristics

Other topics about Communication with External Devices

Input Signal

All input signals are TTL compatible.

Maximum rate input voltage

-0.5 V to 5.5 V

Input voltage

High level

2.0 V to 5.0 V

Low level

0 V to 0.5 V

 

Output Signal

All output signals are TTL compatible.

Maximum rate output current

-10 mA to 10 mA

Output current

High level

-5 mA

Low level

3 mA

Output voltage

High level

2.0 V to 3.3 V (when output current is from -5 mA to 0 mA)
3.20 V (when output current is -1 mA)
2.75 V (when output current is -5 mA)

Low level

0 V to 0.8 V (when output current is from 0 mA to 3 mA)
0.25 V
(when output current is 1 mA)
0.55 V (when output current is 3 mA)

Power Supply (+5 V)

The following table shows electrical characteristics of +5 V power supply for external instruments.

Output voltage

4.5 V to 5.5 V

Maximum output current

100 mA