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18 November 1996
Multiplexer Module (TX2A/TX4A)
MUX-15
3.3 Electrical Characteristics
Symbol
Parameter
min.
typ.
max.
Unit
R_Cha
Additional antenna resonator resistance per
channel
0.2
Ohm
V_U1
Internal stabilized logic supply voltage
4.5
5.0
5.5
V
V_U2
Internal stabilized driver supply voltage
10.8
12.0
13.2
V
ViL
Low level input voltage of signals CSA,
CSB and Enable signal
0
0.8
V
ViH
High level input voltage of signals CSA,
CSB and Enable signal (J2)
2.4
5.0
V
Fan-In
Low Power Schottky compatible fan-in of
signals CSA, CSB and Enable signal (Iin = -
400
µ
A)
1
-
3.4 Timing Characteristics
Symbol
Parameter
min.
typ.
max
Unit
f_TX
Transmit frequency
134.18
134.20
134.22
kHz
t_ri
t_fi
Rise and fall time of input signals CSA,
CSB and Enable signal
1
1
µ
s
µ
s
t_short
Maximum short circuit time of antenna
terminals
10
s
CAUTION: The parameter t_short is determined by the RF Module circuitry and refers to
static short circuit of the antenna terminals. Shorting the antenna terminals
during operation may cause permanent damage to the RF Module.