Multi-Tech Systems MT5600SMI-XL34, MT5600SMI-P92 Handling Precautions, Electrical Characteristics

Chapter 3 – Electrical Characteristics

Chapter 3 – Electrical Characteristics

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.

I/O Electrical Characteristics

3.3V Serial SocketModem

3.3V DC Characteristics (TA = 0°C to 70°C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V

Inputs	Input High	Input Low
–DTR (40), –TXD (35), –RTS (33), –RESET (24)	Min 2.0 V	Max 0.8 V
Inputs	Output High	Output Low
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)	Min 2.4 V	Max 0.5 V
2mA, Z INT = 120 ￿
Digital Input Capacitance			50pF

3.3V Parallel SocketModem

Electrical characteristics for Parallel SocketModem devices are presented below. 3.3V DC Characteristics (TA = 0°C to 70°C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V

Digital Inputs		Input High	Input Low
–DS (40)		Min 2.0 V	Max 0.8 V
Digital Inputs (hysteresis input buffer)		Input High	Input Low
A0 (31), A1 (25), A2 (34),	–WR (32), –RD (33)	Min 2.0 V	Max 0.8 V
8mA Z INT = 50￿	2mA Z INT = 120 ￿
Digital Input/Output		Input High	Input Low
DO (37), D1 (38), D2 (29), D3 (39), D4 (35), D5		Min 2.0 V	Max 0.8 V
(36), D6 (41), D7 (27)		Output High	Output Low
2mA, Z INT = 120 ￿
		Min 2.4 V	Max 0.5 V
Digital Output		Output High	Output Low
INT (30)		Min 2.4 V	Max 0.5 V
2mA, Z INT = 120 ￿
Digital Input Capacitance				50pF

Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 13