MC145745FW Freescale, MC145745FW Datasheet - Page 6

• Manufacturer Part Number: MC145745FW
• Manufacturer: Freescale

Specifications of MC145745FW

• Main Category: Single Chip
• Power Supply Type: Analog
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Pin Count: 28
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Supplier Unconfirmed

MC145745
6
DTMF TRANSMIT CHARACTERISTICS
DTMF RECEIVER CHARACTERISTICS
DEMODULATOR CHARACTERISTICS
Tone Output Level
High Group Pre–Emphasis
DTMF Distortion
DTMF Frequency Deviation
Out–of–Band Level
Setup Time
Input Resistance
Detection Signal Level (Each Tone)
Twist (High/Low Group)
Frequency Detection Band Width
(Figure 3)
Frequency Non–Detection Band Width
(Figure 3)
DTMF Detection Timing
(Figure 2)
(Figure 2)
V.21 Bit Bias
V.23 Bit Bias
V.21 Bit Error Rate
V.23 Bit Error Rate
Characteristic
Characteristic
Characteristic
Low Group
High Group
OFF to ON
Delay
Delay
ON to OFF
Delay
Delay
TDV OFF
Symbol
Symbol
TDV ON
Symbol
DIST
V OE
t osc
V fh
P E
V fl
f V
Transmit Attenuator = 0 dB
RTLA
RTLA = 0
f osc = 3.579545 MHz
f osc = 3.579545 MHz
Single Tone Mode
R L = 1 2 k
R L = 1.2 k
V TxA1 – V TxA2
V TxA1
BR3 = (0, 0, 1, 0)
CD1 = 0 , CD0 = 0
CD1 = 0 , CD0 = 1
CD1 = 1 , CD0 = 0
CD1 = 0 , CD0 = 0
CD1 = 0 , CD0 = 1
CD1 = 1 , CD0 = 0
Receive Level = – 24 dBm
Receive Level = – 24 dBm
S/N = 14 dB
Receive Level = – 24 dBm
S/N = 4 dB
511–Bit Pattern
Receive Level = – 24 dBm
S/N = 14 dB
511–Bit Pattern
S/N = 4 dB
0
Conditions
Conditions
Conditions
V TxA2
1.5% + 2 Hz
– 1.5% – 2Hz
– 48
– 10
Min
Min
Min
– 1
50
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0
Refer to Figure 1
0.00001
0.00001
Typ
Typ
Typ
500
30
35
45
25
35
25
10
—
—
—
—
—
—
—
0
1
5
4
5
Max
Max
Max
3.5%
10
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3
1
0
MOTOROLA
Unit
dBm
dBm
Unit
dBm
Unit
ms
ms
dB
dB
k
dB
%
%
%
%