Specifications

Chapter 6 – SocketModem IP ( MT5656SMI-IP)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342I) 105
Electrical Characteristics
3.3VDC Characteristics (VDD = 3.3V ± 0.3V)
VDDMAX
= 3.6V and
5VDC Characteristics (
VDD = 5V ± 0.25V)
VDDMAX
= 5.25V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33)
Note: These digital inputs are 5V tolerant
Input High
Min 2.0V
Input Low
Max 0.8V
Digital Inputs
–RESET (24)
Note: These digital inputs are 5V tolerant
Input High
Min 2.0V
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