MC145442B Просмотр технического описания (PDF) - Motorola => Freescale
Номер в каталоге
Компоненты Описание
производитель
MC145442B Datasheet PDF : 12 Pages
| |||
BLOCK DIAGRAM
RxA2 15
RxA1 16
–
AAF
S/H
+
LOW–BAND
BPF
HIGH–BAND
BPF
AC AMP
*
LB 2
MODE 13
SQT 14
TxD 11
TLA 20
Xout 8
Xin 9
MODE
CONTROL
MODULATOR
OSCILLATOR
CLOCK
DIVIDER
* Refer to the FB pin description.
SMOOTHING
FILTER
SAMPLING CLOCK: 77.82 kHz
SAMPLING CLOCK: 19.46 kHz
INTERNAL
VAG
ANALOG
GROUND
GENERATOR
4 CDT
7
CDA
CARRIER 3
DETECT
CD
5
DEMOD
RxD
10
1
FB
DSI
–
17
TxA
+
18
ExI
19 VAG
6
VDD
12
VSS
ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to VSS)
Rating
Symbol
Value
Unit
Supply Voltage
VDD
–0.5 to 7.0
V
DC Input Voltage
DC Output Voltage
Clamp Diode Current, per Pin
DC Output Current, per Pin
Power Dissipation
Operating Temperature Range
Storage Temperature Range
Vin
Vout
IIK, IOK
Iout
PD
TA
Tstg
–0.5 to VDD + 0.5
V
–0.5 to VDD + 0.5
V
±20
mA
±28
mA
500
mW
–40 to 85
°C
–65 to 150
°C
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Min
Max
Unit
Supply Voltage
VDD
4.5
5.5
V
DC Input or Output Voltage
Vin, Vout
0
VDD
V
Input Rise or Fall Time
tr, tf
—
500
ns
Crystal Frequency*
fcrystal
3.2
5.0
MHz
* Changing the crystal frequency from 3.579 MHz will change the output frequencies. The
change in output frequency will be proportional to the change in crystal frequency.
This device contains circuitry to protect the
inputs against damage due to high static volt-
ages or electric fields; however, it is advised that
normal precautions be taken to avoid application
of any voltage higher than maximum rated
voltages to this high impedance circuit. For
proper operation it is recommended that Vin and
Vout be constrained to the range VSS ≤ (Vin or
Vout) ≤ VDD).
Unused inputs must always be tied to an
appropriate logic voltage level (e.g., either VSS
or VDD).
MC145442B•MC145443B
2
MOTOROLA
Share Link: 