Checkpoint Systems Inc. EVOLVES10 Manuel D’Utilisation
Chapter 4 – SocketModem (MT2456SMI-22)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D)
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Electrical Characteristics
3.3 V and 5 V Serial SocketModem
3.3 V DC Characteristics (TA = 0°C to 70°C; VDD = 3.3 V ± 0.3 V)
VDDMAX
= 3.6 V
5 V 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)
2mA, Z
INT
= 120 Ω
Min 2.4 V
Max 0.4 V
Digital Input Capacitance
50pF