CMX867E2 View Datasheet(PDF) - CML Microsystems Plc
Part Name
Description
MFG CO.
'CMX867E2' PDF : 48 Pages View PDF
Low Power V.22 Modem
CMX867
1.7.1.3 Operating Characteristics
For the following conditions unless otherwise specified:
VDD = 2.7V to 5.5V at Tamb = -40 to +85°C,
Xtal Frequency = 11.0592 or 12.288MHz ± 0.01% (100ppm)
0dBm corresponds to 775mVrms.
DC Parameters
IDD (Powersave mode)
(Reset but not powersave, VDD = 3.0V)
(Reset but not powersave, VDD = 5.0V)
(Running, VDD = 3.0V)
(Running, VDD = 5.0V)
Logic '1' Input Level
Logic '0' Input Level
Logic Input Leakage Current (Vin = 0 to VDD),
(excluding XTAL/CLOCK input)
Output Logic '1' Level (lOH = 2 mA)
Output Logic '0' Level (lOL = -3 mA)
IRQN O/P 'Off' State Current (Vout = VDD)
RD and RT pin Schmitt trigger input high-going
threshold (Vthi) (see Figure 12)
RD and RT pin Schmitt trigger input low-going
threshold (Vtlo) (see Figure 12)
RDRVN ‘ON’ resistance to VSS (VDD= 3.0V)
RDRVN ‘OFF’ resistance to VDD (VDD= 3.0V)
Notes
1, 2
1, 3
1, 3
1
1
4
4
Min.
-
-
-
-
-
70%
-
-1.0
80%
-
-
0.56VDD
0.44VDD
- 0.6V
-
-
Typ.
2.0
1.7
2.5
3.0
5.5
-
-
-
-
-
-
-
-
50
1300
Max.
-
3.5
5.0
6.0
11.0
-
30%
+1.0
Units
µA
mA
mA
mA
mA
VDD
VDD
µA
-
VDD
0.4
V
1.0
µA
0.56VDD V
+ 0.6V
0.44VDD V
70
Ω
3000
Ω
XTAL/CLOCK Input
(timings for an external clock input)
'High' Pulse Width
'Low' Pulse Width
Notes
Min.
30
30
Typ.
-
-
Max.
-
-
Units
ns
ns
Notes:
1. At 25°C, not including any current drawn from the CMX867 pins by external circuitry
other than X1, C1 and C2.
2. All logic inputs at VSS except for RT and CSN inputs which are at VDD.
3. General Mode Register b8 and b7 both set to 1.
4. Excluding RD and RT pins.
3.5
3
2.5
2
Vin
1.5
1
Vthi
0.5
Vtlo
0
2.5
3
3.5
4
4.5
5
5.5
Vdd
Figure 12 Typical Schmitt Trigger Input Voltage Thresholds vs. VDD
© 2004 Consumer Microcircuits Limited
39
D/867/5
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