Multi-Tech Systems MT5600SMI-P32 ユーザーズマニュアル
Chapter 3 – Electrical Characteristics
Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide
14
5V Serial SocketModem
5 Vdc Characteristics (
TA
= 0 °C to 50 °C;
VDD
= 5 V ± 0.25 V)
VDDMAX
= 5.25 V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33), –RESET (24)
Input High
Min 3.5 V
Input Low
Max .8 V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)
Output High
Min 4 V
Output Low
Max 0.5 V
Current Drive
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
–DS (40)
–DS (40)
Input High
Min 2 V
Min 2 V
Input Low
Max .8 V
Max .8 V
Digital Inputs (hysteresis input buffer)
A0 (31), A1 (25), –WR (32), –RD (33)
A0 (31), A1 (25), –WR (32), –RD (33)
Input High
Min 2 V
Min 2 V
Input Low
Max .8 V
Max .8 V
Digital Input / Output
DO (37), D1 (38), D2 (29), D3 (39), D4 (35), D5 (36),
D6 (41), D7 (27)
DO (37), D1 (38), D2 (29), D3 (39), D4 (35), D5 (36),
D6 (41), D7 (27)
Input High
Min 2 V
Min 2 V
Input Low
Max .8 V
Max .8 V
Current Drive
8 ma
8 ma
Digital Output
INT (30)
INT (30)
Output High
Min 2.4 V
Output Low
Max 0.5 V
Max 0.5 V
Current Drive
8 ma
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