mc145443dw Freescale Semiconductor, Inc, mc145443dw Datasheet - Page 3

• Manufacturer Part Number: mc145443dw
• Description: Single-chip 300-baud Modem
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA
DC ELECTRICAL CHARACTERISTICS
AC ELECTRICAL CHARACTERISTICS
(V DD = 5.0 V
TRANSMITTER
RECEIVE FILTER AND HYBRID
DEMODULATOR
High–Level Input Voltage
Low–Level Input Voltage
High–Level Output Voltage
Low–Level Output Voltage
Input Current
Quiesent Supply Current (X in or f crystal = 3.579 MHz)
Power–Down Supply Current
Input Capacitance
V AG Output Voltage (I O =
CDA Output Voltage (I O =
Line Driver Feedback Resistor
Power Output on TxA
Second Harmonic Power
Hybrid Input Impedance RxA1, RxA2
FB Output Impedance
Adjacent Channel Rejection
Receive Carrier Amplitude
Dynamic Range
Bit Jitter (S/N = 30 dB, Input = – 38 dBm, Bit Rate = 300 baud)
Bit Bias
Carrier Detect Threshold
I OH = 20 A
I OH = 2 mA
I OH = 20 A
I OL = 20 A
I OL = 2 mA
I OL = 20 A
R L = 1.2 k , R TLA =
R L = 1.2 k , R TLA = 5.5 k
R L = 1.2 k
(CDA = 1.2 V or CDA grounded through a 0.1 F capacitor)
10%, T A = – 40 to + 85 C, Crystal Frequency = 3.579 MHz
10 A)
10 A)
Characteristic
Characteristic
(V DD = 5.0 V
X in , TxD, Mode, SQT
X in , TxD, Mode, SQT
LB, TxD, Mode, SQT
All Other Inputs
RxA1, RxA2
10%, T A = – 40 to + 85 C)
CD, RxD
CD, RxD
CD, RxD
CD, RxD
X out
X out
X in
X in
LB
LB
0.1%; See Figure 1)
Symbol
V CDA
V OH
V OL
V AG
V IH
I DD
V IL
C in
I in
R f
On to Off
Off to On
V DD – 0.8
V DD – 0.1
3.15
Min
3.7
2.4
1.1
10
—
—
—
—
—
—
—
—
—
—
—
—
—
– 13
– 10
– 48
– 48
Min
40
—
—
—
—
—
—
—
V DD – 0.05
0.05
Typ
200
2.5
1.2
10
10
20
—
—
—
—
—
—
—
—
—
—
—
7
– 12
– 44
– 47
Typ
– 56
100
– 9
50
16
36
—
—
5
MC145442 MC145443
Max
300
Max
– 12
0.8
1.1
0.1
0.4
2.6
1.3
– 11
10
10
30
—
—
—
—
—
—
—
– 8
1.0
—
—
—
—
—
—
—
—
—
12
10
dBm
dBm
dBm
dBm
dBm
Unit
Unit
mA
pF
k
k
k
dB
%
V
V
V
V
V
V
A
A
s
3