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MM74HC942N Arkusz danych(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Numer części MM74HC942N
Szczegółowy opis  MM74HC942 is a full duplex low speed modem
PDF  8 Pages
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Producent  NSC [National Semiconductor (TI)]
Strona internetowa  http://www.national.com
Logo NSC - National Semiconductor (TI)

MM74HC942N Arkusz danych(HTML) 3 Page - National Semiconductor (TI)

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AC Electrical Characteristics
Unless otherwise specified all specifications apply to the MM74HC942 over the range b40 Cto a85 C using a VCC ea5V
g
10% a VBB eb5V g10% and a 3579MHz g01% crystal
Symbol
Parameter
Conditions
Min
Typ
Max
Units
TRANSMITTER
FCE
Carrier Frequency Error
4Hz
Power Output
VCCe50V
RTLA e 0X
b
3
b
15
0
dBm
RLe12 kX
RTLA e 549 kX
b
12
b
105
b
9
dBm
2nd Harmonic Energy
RTLA e 0X
b
62
b
56
dBm
RECEIVE FILTER AND HYBRID
Hybrid Input Impedance
50
kX
(Pins 15 and 16)
FTLC Output Impedance
5
10
50
kX
Adjacent Channel Rejection
RXA2eGND TXAeGND or VCC
60
dB
Input to RXA1
DEMODULATOR (INCORPORATING HYBRID RECEIVE FILTER AND DISCRIMINATOR)
Carrier Amplitude
b
48
b
9
dBm
Bit Jitter
SNR e 30 dB
100
200
m
S
Input eb38 dBm
Baud Rate e 300 Baud
(
Bit Bias
Alternating 1-0 Pattern
5
10
%
Carrier Detect Trip Points
CDAe12V
Off to On
b
45
b
42
b
40
dBm
VCCe50V
On to Off
b
47
b
45
b
42
dBm
Carrier Detect Hysteresis
VCCe5V
2
3
4
dB
AC Specification Circuit
TLF5348 – 3
3



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