
CHAPTER 3 –SPECIFICATIONS
SocketModem CDMA MTSMC-C2 Device Guide
10
5 Volt Powered
Input Low Level
0
0.8
Input High Level
2.3
5
Output Low Level
0
0.55
Output High Level
3.7
5
Absolute Maximum Rating
VCC Voltage (Survival)
-0.3V to +5.5V
Electrical Characteristics Other Pins
Pin
Signal Name
VIL
VIH
VOL
VOH
Min
Max
Min
Max
Min
Max
Min
Max
J24
-RESET
0.8
2.0
--
--
--
--
J26
GND
--
--
--
--
--
--
--
--
J41
GND
--
--
--
--
--
--
--
--
J58
-LED LINK
--
--
--
--
0
0.45 2.85 3.3
J61
VCC
--
--
--
--
--
--
--
--
J63
GND
--
--
--
--
--
--
--
--
Pinout Specifications
Pin
Signal Name
Logic Level Voltage
1
I/ O
Description
J24
–RESET
3.3 – 5.0
I
Device reset (active low)
J26
GND
GND
GND
Ground
J33
–RTS
3.3 – 5.0
I
Request to send (active low)
J34
–RXD
3.3 – 5.0
O
Received data (active low)
J35
–TXD
3.3 – 5.0
I
Transmitted data (active low)
J36
–RI
3.3 – 5.0
O
Ring indicator (active low)
J37
–DSR
3.3 – 5.0
O
Data set ready (active low)
J38
–CTS
3.3 – 5.0
O
Clear to send (active low)
J39
–DCD
3.3 – 5.0
O
Data carrier detect (active low)
J40
–DTR
3.3 – 5.0
I
Data terminal ready (active low)
J41
GND
GND
GND
Ground
J58
–LED LINK
3.3
O
Link status (active low, can sink up to 150mA)
J61
VCC
3.3 – 5.0
PWR
DC input power
J63
GND
GND
GND
Ground
1
A hyphen (-) indicates a range of acceptable logic levels.