Cermetek Microelectronics, Inc.
High Speed Internet Modem Family
2005 Cermetek Microelectronics, Inc.
Page 13
Document No. 607-0017-01 Revision A (05/05)
Table 3. Analog Characteristics.
NAME TYPE
CHARACTERISTICS
VALUE
SPK O(DF)
Minimum
Load
300ohm
Maximum Capacitive Load
0.01µf
Output
Impedance
10ohm
Output Voltage
2.5 ± 1.6V
D.C.
Offset
<20mV
Table 4. Summary CH2165 iModem Family of Products.
Model
Summary of Features
Operating Temperature
CH2165 Send and Retrieve Streaming Email. Email Send Control Pin
Full Function, V.90, 56Kbps, FCC Part 68 Approved, UL 1950 listed.
0°C to 70°C
Table 5. CH2165 iModem Electrical Specifications.
Symbol Characteristic Min.
Typ.
Max.
Units
V
CC
Positive Supply Voltage
4.5
5.0
5.5
V
I
CC
Off Hook
Nominal Operating Current @
V
CC
= 5.5V when modem is Off Hook
300.0 mA
V
IH
High Level Input Voltage @ 5.0V
2.0
3.5
V
V
IL
Low Level Input Voltage @ 5.0V
1.0
2.2
V
V
IH
High Level Input Voltage (Excluding IN1, IN2,
SEND) @ 5.0V
2.0 3.5 V
V
IL
Low Level Input Voltage (Excluding IN1, IN2,
SEND) @ 5.0V
0.8
V
VT+
Positive Hysteresis Threshold for RESET Pin
2.9
V
VT-
Negative Hysteresis Threshold for RESET Pin
1.98
V
V
OH
High Level Output (Including SENT) with I
OH
=
0.5mA
2.4 V
V
OL
Low Level Output (Including SENT) with I
Ol
=
1.6mA
0.6
V
I
IN
Input Leakage Current (TXD, DTR, RTS)
100
uA
I
IL
Input Current (RST, IN1, IN2, SEND)
1.0
uA
C
P
Capacitive Load (TXD, DTR, RTS)
Capacitive Load (RTS)
10
8
pF
pF
