4453-2 Aeroflex Circuit Technology, 4453-2 Datasheet - Page 5

• Manufacturer Part Number: 4453-2
• Description: Act4453 Single Supply Dual Transceiver
• Manufacturer: Aeroflex Circuit Technology

6V P-P MIN
9V P-P MAX
FIGURE 5 – TYPICAL TRANSFORMER
FIGURE 3 – TRANSMITTER (TX) OUTPUT
TX DATA OUT
TX DATA OUT
RX DATA IN
RX DATA IN
SCD4453 Rev C 10/9/06
*
Rise and fall times measured at point A-A' in Figure 5
70Ω
Transformer turns ratios:
N1:N2 = 1:2.2.12
N1:N3 = 1:1.5
Use Technitrol 1553-5 or equivalent
DIRECT CONNECTION
10%
WAVEFORM
90%
P
P'
N1:N2
t
r
*
B
B'
52.5Ω
52.5Ω
Center
t
Tap
f
*
A
A'
N1:N3 for
Coupling
Stub
0 Volts
70Ω
C
C'
5
0 Volts
Note : Vcc = +5V
FIGURE 4 – TRANSMITTER (TX) OUTPUT
(Total, hybrid with one channel transmitting
FIGURE 6 – POWER DISSIPATION VS.
2200
2000
1800
1600
1400
1200
1000
800
600
400
200
*
0
Offset measured at point C-C' in Figure 5
0
DC
, Transformer ratio 1:2.12 , V
10
and the other not powered)
LAST BIT
OFFSET
20
Maximum
DUTY CYCLE – PERCENT
30
2.5 µsec
DUTY CYCLE
40
50
60
Aeroflex Plainview
BUS
Magnified View
70
(Pt A-A') at 7.5V
OUTPUT OFFSET
OUTPUT OFFSET
80
Typical
90 100
*
*
P
-
P
.