Specifications

Chapter 6 – SocketEthernet IP (MTXCSEM, MTXCSEM-L-RAS & MT100SEM)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342F) 106
Electrical Characteristics
3.3V Serial
3.3VDC Characteristics (TA = -40 °C to 85 °C; VDD = 3.3V ± 0.3V) VDDMAX = 3.6V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33), –RESET (24)
Note: These digital inputs are 5 volt tolerant
Input High
Min 2.52V
Input Low
Max 0.8V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36),
–RXD (34)
Output High
Min. 2.3V
Output Low
Max 0.4V
Current Drive
2mA
Digital Input Capacitance 5 pF
5V Serial
5VDC Characteristics (TA = 0 °C to 50 °C; VDD = 5V ± 0.25V) VDDMAX = 5.25V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33), –RESET (24)
Input High
Min 2.52V
Input Low
Max .0.8V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36),
–RXD (34)
Output High
Min. 2.3V
Output Low
Max 0.4V
Current Drive
2mA
Digital Input Capacitance 5 pF