Multi-Tech Systems MT2456SMI22 manual 3V and 5V Serial SocketModem, Handling Precautions, 50pF

Chapter 3 ￿ Electrical Characteristics

Chapter 3 – Electrical Characteristics

3.3V and 5V Serial SocketModem

3.3V DC Characteristics (TA = 0°C to 70°C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V
5V DC Characteristics (TA = 0°C to 50°C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V
Inputs	Input High	Input Low
–DTR (40), –TXD (35), –RTS (33), –RESET (24)	Min 2.0 V	Max 0.8 V
Outputs	Output High	Output Low
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)	Min 2.4 V	Max 0.4 V
2mA, Z INT = 120 Ω
Digital Input Capacitance			50pF

Handling Precautions

All electronic devices should be handled with certain precautions to avoid damage due to the accumulation of static charge. Although input protection circuitry has been incorporated into the devices to minimize the effect of this static buildup, proper precautions should be taken to avoid exposure to electrostatic discharge during handling and mounting.

Multi-Tech Systems, Inc. MT2456SMI-22 SocketModem Developer’s Guide 9