Chapter 3 – Electrical Characteristics

5V Serial SocketModem

5 Vdc Characteristics (TA = 0 °C to 50 °C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V

Digital Inputs

Input High

Input Low

 

 

 

–DTR (40), –TXD (35), –RTS (33), –RESET (24)

Min 3.5 V

Max .8 V

 

 

 

 

 

 

 

Digital Outputs

Output High

Output Low

Current Drive

 

–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)

Min 4 V

Max 0.5 V

15 ma

 

 

 

 

Digital Input Capacitance

 

 

5 PF

 

 

 

 

5V Parallel SocketModem

5 Vdc Characteristics (TA = 0 °C to 50 °C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V

Digital Inputs

Input High

Input Low

 

–DS (40)

Min 2 V

Max .8 V

 

 

 

 

 

Digital Inputs (hysteresis input buffer)

Input High

Input Low

 

A0 (31), A1 (25), –WR (32), –RD (33)

Min 2 V

Max .8 V

 

 

 

 

 

Digital Input / Output

Input High

Input Low

Current Drive

DO (37), D1 (38), D2 (29), D3 (39), D4 (35), D5 (36),

Min 2 V

Max .8 V

8 ma

D6 (41), D7 (27)

 

 

 

 

 

 

 

Digital Output

Output High

Output Low

Current Drive

INT (30)

Min 2.4 V

Max 0.5 V

8 ma

 

 

 

 

Digital Input Capacitance

 

 

5 PF

 

 

 

 

Operating Conditions

Parameter

Symbol

Limits

Units

 

+3.3 V Configuration

 

 

 

 

 

 

Supply voltage (Pin 61 = +3.3 V)

VDD

+3.13 to +3.47

VDC

Operating ambient temperature

TA

0 to +70

°C

 

+5 V Configuration

 

 

 

 

 

 

Supply voltage (Pin 61 = +5 V)

VDD

+4.75 to +5.25

VDC

Operating ambient temperature

TA

0 to +70

°C

Absolute Maximum Ratings

 

Parameter

Symbol

Limits

Units

Supply voltage (Pin 61

= +3.3 V)

VDD

-0.5 to +4.0

VDC

 

 

 

 

 

Supply voltage (Pin 61

= +5 V)

VDD

-0.5 to +7.0

VDC

 

 

 

 

 

Input voltage

 

VIN

-0.5 to (VDD +0.5)

VDC

Voltage applied to outputs in high impedance (Off) state

VOUT

+3.13 to +3.47

VDC

Storage temperature

 

TSTG

-40 to +80

°C

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

14

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Multi-Tech Systems MT5600SMI-P92, MT5600SMI-XL34, MT5600SMI-PL92 manual Operating Conditions, Absolute Maximum Ratings