MC145426 Просмотр технического описания (PDF) - Motorola => Freescale
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MC145426 Datasheet PDF : 20 Pages
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ANALOG CHARACTERISTICS (VDD = 5 V, TA = 0 to 70°C)
Parameter
Min
Modulation Differential Amplitude (RL = 440 Ω)
Modulation Differential DC Offset
LO1 to LO2
4.5
0
Demodulator Input Amplitude (See Note)
0.050
Demodulator Input lmpedance
50
NOTE: The input level into the demodulator to reliably demodulate incoming bursts. Input referenced to Vref.
MC145422 SWITCHING CHARACTERISTICS (VDD = 5 V, TA = 25°C, CL = 50 pF)
Figure
Parameter
No.
Symbol
Min
Input Rise Time
All Digital Inputs
1
tr
—
Input Fall Time
All Digital Inputs
1
tf
—
Pulse Width
TDC/RDC, RE1, MSI
1
tw(H,L)
90
CCI Duty Cycle
1
tw(H,L)
45
Data Clock Frequency
TDC/RDC —
tDC
64
Propagation Delay Time
MSI to SO1, SO2 VD (PD = VDD)
2
tPLH, tPHL
—
TDC to Tx
3
—
MSI to TDC/RDC Setup Time
TE1/RE1 to TDC/RDC Setup Time
Rx to TDC/RDC Setup Time
Rx to TDC/RDC Hold Time
SI1, SI2 to MSI Setup Time
SI1, SI2 to MSI Hold Time
4
tsu3
90
tsu4
40
4
tsu3
90
tsu4
40
5
tsu5
60
5
th1
60
6
tsu6
60
6
th2
60
MC145426 SWITCHING CHARACTERISTICS (VDD = 5 V, TA = 25°C, CL = 50 pF)
Parameter
Figure
No.
Symbol
Input Rise Time
All Digital Inputs
1
tr
Input Fall Time
Clock Output Pulse Width
All Digital Inputs
1
CLK
1
tf
tw(H,L)
Crystal Frequency
—
fX1
Propagation Delay Times
TE1 Rising to CLK (TE = VDD)
7
tp1
TE1 Rising to CLK (TE = VSS)
7
tp1
CLK to TE1 Falling
7
tp2
CLK to RE1 Rising
8
tp3
RE1 Falling to CLK (TE = VDD)
8
tp4
RE1 Falling to CLK (TE = VSS)
8
tp4
CLK to Tx
9
tp5
TE1 to SO1, SO2
9
tp6
Rx to CLK Setup Time
Rx to CLK Hold Time
SI1, SI2 to TE1 Setup Time
5
tsu5
5
th1
6
tsu6
SI1, SI2 to TE1 Hold Time
6
th2
Min
—
—
3.8
4.086
– 50
438
—
—
– 50
438
—
—
60
60
60
60
Max
Unit
6.0
V p–p
300
mV
2.5
V peak
150
kΩ
Max
Unit
4
µs
4
µs
—
ns
55
%
2560
kHz
90
ns
90
—
ns
—
—
ns
—
—
ns
—
ns
—
ns
—
ns
Max
Unit
4
µs
4
µs
4.0
µs
4.1
MHz
50
ns
538
40
40
50
538
90
90
—
ns
—
ns
—
ns
—
ns
MOTOROLA
MC145422•MC145426
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