DC ELECTRICAL CHARACTERISTICS (VDD = 5.0 V ± 10%, TA = – 40 to + 85°C)
Characteristic
Symbol
Min
High–Level Input Voltage
LB
Xin, TxD, Mode, SQT
Low–Level Input Voltage
LB
Xin, TxD, Mode, SQT
High–Level Output Voltage
IOH = 20 µA
IOH = 2 mA
IOH = 20 µA
CD, RxD
CD, RxD
Xout
Low–Level Output Voltage
IOL = 20 µA
IOL = 2 mA
IOL = 20 µA
CD, RxD
CD, RxD
Xout
Input Current
LB, TxD, Mode, SQT
RxA1, RxA2
Xin
Quiesent Supply Current (Xin or fcrystal = 3.579 MHz)
Power–Down Supply Current
VIH
VIL
VOH
VOL
Iin
IDD
VDD – 0.8
3.15
—
—
VDD – 0.1
3.7
—
—
—
—
—
—
—
—
—
Input Capacitance
Xin
Cin
—
All Other Inputs
—
VAG Output Voltage (IO = ± 10 µA)
CDA Output Voltage (IO = ± 10 µA)
Line Driver Feedback Resistor
VAG
2.4
VCDA
1.1
Rf
10
Typ
—
—
—
—
—
—
VDD – 0.05
—
—
0.05
—
10
—
7
200
10
—
2.5
1.2
20
AC ELECTRICAL CHARACTERISTICS
(VDD = 5.0 V ± 10%, TA = – 40 to + 85°C, Crystal Frequency = 3.579 MHz ± 0.1%; See Figure 1)
Characteristic
Min
Typ
TRANSMITTER
Power Output on TxA
RL = 1.2 kΩ, RTLA = ∞
RL = 1.2 kΩ, RTLA = 5.5 kΩ
– 13
– 12
– 10
–9
Second Harmonic Power
RL = 1.2 kΩ
RECEIVE FILTER AND HYBRID
—
– 56
Hybrid Input Impedance RxA1, RxA2
40
50
FB Output Impedance
—
16
Adjacent Channel Rejection
– 48
—
DEMODULATOR
Receive Carrier Amplitude
– 48
—
Dynamic Range
—
36
Bit Jitter (S/N = 30 dB, Input = – 38 dBm, Bit Rate = 300 baud)
—
100
Bit Bias
—
5
Carrier Detect Threshold
(CDA = 1.2 V or CDA grounded through a 0.1 µF capacitor)
On to Off
—
– 44
Off to On
—
– 47
Max
—
—
0.8
1.1
—
—
—
0.1
0.4
—
± 1.0
± 12
± 10
10
300
—
10
2.6
1.3
30
Max
– 11
–8
—
—
—
—
– 12
—
—
—
—
—
Unit
V
V
V
V
µA
mA
µA
pF
V
V
kΩ
Unit
dBm
dBm
kΩ
kΩ
dBm
dBm
dB
µs
%
dBm
MOTOROLA
MC145442•MC145443
3