ARX4404 & 4407 Transceivers for
MACAIR A3818, A5690, A5232, A4905
& MIL-STD-1553
Features
• ARX4404 Transceiver meets MIL-STD-1553A & B,
Macair A3818, A4905, A5232 and A5690 specs
• ARX4407 Transceiver meets MIL-STD-1553 specs
• Bipolar Supply ±15V to ±12V, Logic Supply +5V
• Direct replacement for CT3231 and CT3232
• Voltage source output for higher bus drive power
• Plug-in, flat package or low profile flat package
• Monolithic construction using linear ASICs
• Variable receiver threshold capability
• Low receiver data level versions, ARX4440, 4467
• Processed and screened to MIL-STD-883 specs
• DESC SMD (Standard Military Drawing)
• MIL-PRF-38534 Compliant Devices Available
www.aeroflex.com/act1.htm
CIRCUIT TECHNOLOGY
General Description
The
Aeroflex
Laboratories
transceiver models ARX4404 and
ARX4407 are new generation
monolithic transceivers which provide
full compliance with Macair and
MIL-STD-1553
data
bus
requirements
The model ARX4404 and model
ARX4407 perform the front-end
analog function of inputting and
outputting data through a transformer
to a MIL-STD-1553 or Macair data
bus.
The
ARX4404
can
be
considered a "Universal" Transceiver
in that it is compatible with
MIL-STD-1553A, B, Macair A-3818,
A-4905, A-5232 and A-5690. The
ARX4407
is
compatible
with
MIL-STD-1553A and B.
Design of these transceivers
reflects particular attention to active
filter performance.This results in low
bit and word error rate with superior
waveform purity and minimal zero
crossover distortion. The ARX4404
series active filter design has
additional high frequency roll-off to
provide the required Macair low
harmonic
distortion
waveform
without increasing the pulse delay
characteristics significantly.
Efficient transmitter electrical and
thermal design provides low internal
power dissipation and heat rise at
high and well as low duty cycles.
An optional receiver input threshold
adjustment can be accomplished by
the use of the "Set Internal
Threshold" terminals.
ARX4404FP/4404 Transceivers
TX DATA OUT
TX DATA IN
TX DATA IN
TX INHIBIT
EX THRESHOLD
DATA
DATA
SET INTERNAL
THRESHOLD DATA
EX THRESHOLD
DATA
+5 V
-12V or -15V
RX DATA IN
RX DATA IN
+15V or +12V
STROBE
INPUT
AMP
COMP.
RX DATA OUT
DRIVER
SHAPING
V+
OUTPUT
STAGE
TX DATA OUT
V-
ACTIVE
FILTER
COMP.
RX DATA OUT
Transmitter:
The Transmitter section accepts
bi-phase TTL data at the input and
when coupled to the data bus with a
Block Diagram (without Transformer)
EROFLEX CIRCUIT TECHNOLOGY - Data Bus Modules for the Future ©SCD4404 REV B 3/11/98
1:1 transformer, isolated on the data
bus side with two 52.5 Ohm fault
isolation resistors, and loaded by
two 70 Ohm terminations plus
additional receivers, the data bus
signal produced is 7.0 volts
minimum P-P at A-A’. (See
Figure 5.) When both DATA and
DATA inputs are held low or high,
the transmitter output becomes a
high impedance and is “removed”
from the line. In addition, an
overriding “INHIBIT" input provides
for the removal of the transmitter
output from the line. A logic “1”
applied to the “INHIBIT” takes
priority over the condition of the data
inputs and disables the transmitter.
(See Transmitter Logic Waveforms,
Figure 1.)
The transmitter utilizes an active
filter to suppress harmonics above
1 MHz to meet Macair specifications
A-3818, A-4905, A-5232 and
A-5690. The transmitter may be
safely operated for an indefinite
period at 100% duty cycle into a
data bus short circuit.
Receiver:
The Receiver section accepts
bi-phase differential data at the input
and produces two TTL signals at the
output. The outputs are DATA and
DATA, and represent positive and
negative excursions of the input
beyond a pre-determined threshold.
(See Receiver Logic Waveforms,
Figure 2.)
The internal threshold is nominally
set to detect data bus signals
exceeding 1.05 Volts P-P and
reject signals less than 0.6 volts
P-P when used with a 1:1 turns
ratio transformer. (See Figure 5
for transformer data and typical
connection.) This threshold setting
can be held by grounding the
appropriate pins or modified with
the use of external resistors.
A low level at the Strobe input
inhibits the DATA and DATA
outputs. If unused, a 2K pull-up to
+5 Volts is recommended.
Figure 1 - Transmitter Logic Waveforms
DATA IN
DATA IN
INHIBIT
LINE TO LINE
OUTPUT
Notes: 1. Line to line waveforms illustrate Macair signals, MIL-STD-1553 signals are trapezoidal
2. DATA and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them.
3. DATA and DATA must be in the same state during off time (both high or low).
Figure 2 - Receiver Logic Waveforms
LINE TO LINE
INPUT
DATA OUT
DATA OUT
Note overlap
NOTE
:
Waveforms shown are for normally low devices. For normally high receiver output
level devices, the receiver outputs are swapped as shown by the dashed lines
Aeroflex Circuit Technology
2
SCD4404 REV B 3/11/98 Plainview NY (516) 694-6700
Absolute Maximum Ratings
Operating case temperature
Storage case temperature
Power supply Voltages
Logic input Voltage
Receiver differential input
Receiver input voltage (common mode)
Driver peak output current
Total package power dissipation over the full operating
case temperature range
Power Dissipation for hottest die, (100% duty cycle)
Maximum junction to case temperature rise for the hot-
test device (100 % duty cycle)
Junction-Case, Thermal resistance for hottest device
±16 V
-0.3 V to +5.5 V
±40 V
±10V
300 mA
2.4 Watts
600 mW
36°C
60°C/W
-55°C to +125°C
-65°C to +150 °C
+7 V
Electrical Characteristics, Transmitter Section
Input Characteristics, TX DATA in or TX DATA in
Parameter
"0" Input Current
"1" Input Current
"0" Input Voltage
"1" Input Voltage
Condition
V
IN
= 0.4 V
V
IN
= 2.7 V
Symbol
I
ILD
I
IHD
V
IHD
V
IHD
Min
Typ
-0.2
1.0
Max
-0.4
40
0.7
Unit
mA
µA
V
V
2.0
Inhibit Characteristics
"0" Input Current
"1" Input Current
"0" Input Voltage
"1" Input Voltage
Delay from TX inhibit(0¡1) to inhibited output
Delay from TX inhibit, (1¡0) to active output
Differential output noise, inhibit mode
Differential output impedance (inhibited)
Note 2
Note 1
Note 1
V
IN
=0.4V
V
IN
=2.7V
I
ILI
I
IHI
V
ILI
V
IHI
t
DXOFF
t
DXON
V
NOI
Z
OI
2K
2
-0.2
1.0
-0.4
40
0.7
mA
µA
V
V
300
300
0.8
450
450
10
nS
nS
mV p-p
Ω
Output Characteristics
Differential output level
Rise and fall times
(10% to 90% of p-p output)
Output offset at point A-A’on Fig 5., 2.5 µS
after midpoint crossing of the parity bit of
the last word of a 660 µS message
Delay from 50% point of TX DATA or
TX DATA input to zero crossing of
differential signal. (note 1.)
Aeroflex Circuit Technology
R
L
=35
Ω
ARX4404
ARX4407
R
L
=35
Ω
ARX4404
ARX4407
3
V
O
t
r
& t
f
7
200
100
7.5
250
180
9
300
300
±90
V p-p
nS
V
OS
240
t
DTX
150
mV peak
nS
nS
300
300
SCD4404 REV B 3/11/98 Plainview NY (516) 694-6700
Electrical Characteristics, Receiver Section
Parameter
Differential Input Impedance
Differential Input Voltage Range
Input Common Mode Voltage Range
Common Mode Rejection Ratio Note 3
Note 1
Note 1
Condition
f= 1MHz
Symbol
Z
In
V
IDR
V
ICR
CMRR
Min
20K
Typ
100K
Max
40
Unit
Ω
V p-p
V p-p
dB
10
40
Strobe Characteristics (Logic "O" inhibits output)
"0" Input Current
"1" Input Current
"0" Input Voltage
"1" Input Voltage
Strobe Delay (turn-on or turn-off)
Note 1.
V
S
=0.4 V
V
S
=2.7V
I
IL
I
IH
V
IL
V
IH
t
SD
2.0
150
-0.2
-1.0
-0.4
+40
0.7
mA
µA
V
V
nS
Threshold Characteristics (Sinewave input )
100KHz-1MHz
Internal Threshold Voltage
(Referred to the bus) Pins 6 and 11 grounded
External Threshold
Pins 6 & 11 open,
Pin 5 with a 5.9K resistor to GND
Pin 12 with a 6.65K resistor to GND
1MHZ Sinewave applied to point A-A
V
TH
V
TH(ext
)
0.60
1.5
0.80
1.9
1.15
2.3
V
P-P
V
P-P
Output Characteristics, RX DATA and RX DATA
"1" State
"0" State
Delay, (average)from differential input zero
crossings to RX DATA and RX DATA output
50% points
I
OH
=-0.4 mA
I
OL
= 4 mA
Note 1
V
OH
V
OL
t
DRX
2.5
3.6
0.35
300
0.5
450
V
V
nS
Power Data
Power Supply Currents (Power supplies set at +15V, -15V, +5V)
Duty Cycle
+V
-V
Transmitter Standby
25% duty cycle
50% duty cycle
100% duty cycle
Note 1
Note 1
60mA
80mA
105mA
160mA
75mA
95mA
120mA
180mA
35mA
5V
Recommended Power Supply Voltage Range
+V
-V
Logic
Aeroflex Circuit Technology
+11.4 Volts to +15.75 Volts
-11.4 Volts to -15.75 Volts
+4.5 Volts to +5.5 Volts
4
SCD4404 REV B 3/11/98 Plainview NY (516) 694-6700
Figure 3 - Transmitter (TX) Output Wave form
Figure 4 - Transmitter (TX) Output offset
Last Bit
t
f
*
90%
Magnified View
OUTPUT OFFSET
*
6.5V P-P MIN
8.5V P-P MAX
0 Volts
0 Volts
OUTPUT OFFSET
*
10%
2.5 µsec
t
r
*
* Rise and fall times measured at point A-A’ in Fig 5
*Offset measured at point A-A’ in Fig 5
Figure 5 - Typical Transformer connection
70Ω
70Ω
Figure 6 - Power Dissipation vs. Duty Cycle
4.0
N1:N2
B
52.5Ω
A
Ctr
tap
B’
TX DATA OUT
52.5Ω
RX DATA IN
RX DATA IN
Transformer turns ratios:
N1:N2 = 1:1
N1:N3 = 1:0.71
Use Aeroflex 25T1553-1
0
0
10
20
30
40
50
60
70
80
90 100
A’
N1:N3 for
stub
coupling
POWER DISSIPATION
WATTS
3.5
3.0
2.5
2.0
1.5
1.0
0.5
(TYPICAL)
TX DATA OUT
DUTY CYCLE, PERCENT
Notes:
1. Characteristics guaranteed by design, not production tested.
2. Measured from 75kHz to 1mHz at point A-A’ with transformer self impedance of 3K
Ω
minimum, power on or off.
3. Specifications apply over the temperature range of -55°C to +125°C (case temperature)
unless otherwise noted.
4. All typical values are measured at +25°C
The information contained in this data sheet is believed to be accurate; however, Aeroflex Circuit Technology.
assumes no responsibility for its use, and no licence or rights are granted by implication or otherwise in connection
therewith.
Aeroflex Circuit Technology
5
SCD4404 REV B 3/11/98 Plainview NY (516) 694-6700
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