ACT4455 Aeroflex Circuit Technology, ACT4455 Datasheet - Page 5

• Manufacturer Part Number: ACT4455
• Description: Act 4455 / 4459 Single Supply Transceivers For Mil-std-1553/1760
• Manufacturer: Aeroflex Circuit Technology

Aeroflex Circuit Technology
6V P-P MIN
9V P-P MAX
Figure 5 – Typical direct transformer connection
Figure 3 – Transmitter (TX) Output Wave form
*
TX DATA OUT
TX DATA OUT
RX DATA IN
RX DATA IN
Rise and fall times measured at point A-A' in Figure 5
70
Transformer turns ratios:
N1:N2 = 1:2.5
N1:N3 = 1:1.77
Use Technitrol 1553-45 or equivalent
10%
90%
P
P'
N1:N2
t
r
*
B
B'
52.5
52.5
t
f
Center
*
Tap
A
A'
N1:N3 for
Coupling
Stub
0 Volts
70
5
0 volts
Note:Vcc=5 Volts,Transformer ratio 1:2.5, V
Figure 6 – Power Dissipation vs. Duty Cycle
(Total hybrid with one channel transmitting
Figure 4 – Transmitter (TX) Output offset
2000
1800
1600
1400
1200
1000
800
600
400
200
*
0
Offset measured at point A-A' in Figure 5
0
10
and the other not powered)
LAST BIT
20
SCD4455 REV A 1/29/98
DUTY CYCLE – PERCENT
Maximum
30
2.5 µsec
40
50
bus
60
(pt A-A') at 7.5 Volts P-P
Plainview NY [phone]
Magnified View
70
OUTPUT OFFSET
OUTPUT OFFSET
Typical
80
90 100
*
*