eroflex Circuit T
echnology
Data Bus Modules For The Future SCD4418 REV B 10/18/99
CIRCUIT TECHNOLOGY
www.aeroflex.com
Features
ARX 4418 Transceiver meets MIL-STD-1553A&B,
Macair A3818, A4905, A5232 and A5690 specs
ARX 4417 Transceiver meets MIL-STD-1553 specs
Operates with 15 Volts to 12 Volts power supply
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
Variable TX Amplitude
Processed and screened to Mil-STD-883 specs
DESC SMD (Standard Military Drawing)
General Description
The Aeroflex Laboratories
transceiver models ARX 4418 and
ARX 4417 are new generation
monolithic transceivers which provide
full compliance with Macair and
MIL-STD-1553 data bus requirements
while providing variable amplitude
control.
The model ARX 4418 and model
ARX 4417 perform the front-end
analog function of inputting and
outputting data through a transformer
to a MIL-STD-1553 or Macair data
bus. The ARX 4418 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
ARX 4417 is compatible with
MIL-STD-1553A/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 ARX4418
series active filter design has
additional high frequency roll-off to
provide the required Macair low
harmonic distortion waveform without
increasing the pulsedelay characteris-
tics significantly.
Efficient transmitter electrical and
thermal design provides low internal
power dissipation and heat rise at
high and well as low duty cycles.
Variable amplitude is adjusted with
010 Vdc on the control pin. An
optional receiver input threshold
adjustment can be accomplished by
the use of the "Set Internal
Threshold" terminals.
ARX 4418FP/4418 Transceivers
Block Diagram (without Transformer)
SHAPING
OUTPUT
STAGE
COMP.
COMP.
ACTIVE
FILTER
INPUT
AMP
DRIVER
TX DATA IN
TX DATA IN
TX INHIBIT
+5 V
RX DATA IN
RX DATA IN
STROBE
TX DATA OUT
RX DATA OUT
RX DATA OUT
-12V or -15V
EX THRESHOLD
DATA
SET INTERNAL
DATA
DATA
EX THRESHOLD
DATA
+15V or +12V
V+
V-
THRESHOLD
AMP CONTROL
TX DATA OUT
ARX 4418 & 4417 Variable Amplitude Transceivers for
& MIL-STD-1553
MACAIR A3818, A5690, A5232, A4905
Aeroflex Circuit Technology
SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700
2
Transmitter
The Transmitter section accepts
bi-phase TTL data at the input and
when coupled to the data bus with a
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
1MHz 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.
DATA IN
DATA IN
INHIBIT
LINE TO LINE
OUTPUT
NOTES:
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 1 Transmitter Logic Waveforms
Figure 2 Receiver Logic Waveforms
Note overlap
NOTE
:
Waveforms shown are for normally low devices. For normally high receiver output
devices, the receiver outputs are swapped as shown by the dashed lines
level
LINE TO LINE
INPUT
DATA OUT
DATA OUT
1. Line to line waveforms illustrate Macair signals, MIL-STD-1553 signals are trapezoidal
Aeroflex Circuit Technology
SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700
3
Absolute Maximum Ratings
Operating Case Temperature
-55C to +125C
Storage Case Temperature
-65C to +150 C
Power Supply Voltages
15 V P.S. to 18V MAX
+5 V P.S. to +7V MAX
Logic Input Voltage
-0.3 V to +5.5 V
Receiver Differential Input
40 V
Receiver Input Voltage (Common Mode)
10V
Driver Peak Output Current
300 mA
Total Package Power Dissipation over the Full
Operating Case Temperature Range
2.4 Watts
Power Dissipation for hottest die, (100% duty cycle)
600 mW
Maximum junction to case temperature rise for the
hottest device (100 % duty cycle)
36C
Junction-Case, Thermal Resistance for hottest device
60C/W
Electrical Characteristics, Transmitter Section
Input Characteristics, TX DATA in or TX DATA in
Parameter
Condition
Symbol
Min
Typ
Max
Unit
"0" Input Current
V
IN
= 0.4 V
I
ILD
-0.2
-0.4
mA
"1" Input Current
V
IN
= 2.7 V
I
IHD
1.0
40
A
"0" Input Voltage
V
ILD
0.7
V
"1" Input Voltage
V
IHD
2.0
V
Inhibit Characteristics
"0" Input Current
V
IN
= 0.4V
I
ILI
-
-0.2
-0.4
mA
"1" Input Current
V
IN
= 2.7V
I
IHI
-
1.0
40
A
"0" Input Voltage
V
ILI
-
-
0.7
V
"1" Input Voltage
V
IHI
2
-
-
V
Delay from TX inhibit, (0
1) to inhibited
output
Note 1
t
DXOFF
-
400
500
nS
Delay from TX inhibit, (1
0) to active output
Note 1
t
DXON
-
400
500
nS
Differential output noise, inhibit mode
V
NOI
-
0.8
10
mV p-p
Differential output impedance (inhibited)
Note 2
Z
OI
2K
-
-
Output Characteristics
Differential output level at point BB' Fig 5,
Vcont = 10 Vdc, See Fig 3 for control voltage
versus output level
R
L
= 140
V
O
28
30
36
V p-p
Rise and fall times
(10% to 90% of p-p output)
t
R
200
250
300
nS
Output offset at point A-A' on Fig 5, 2.5 S
after midpoint crossing of the parity bit of the
last word of a 660 S message
RL = 35
V
OS
-
-
90
mV peak
Delay from 50% point of TX DATA or TX
DATA input to zero crossing of differential
signal. (Note 1)
ARX4418
t
DTX
-
330
450
nS
ARX4417
-
-
360
nS
Aeroflex Circuit Technology
SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700
4
Electrical Characteristics, Receiver Section
Parameter
Condition
Symbol
Min
Typ
Max
Unit
Differential Input Impedance
f = 1MHz
Z
IN
20K
100K
W
Differential Input Voltage Range
V
IDR
40
V p-p
Input Common Mode Voltage Range
Note 1
V
ICR
10
V p-p
Common Mode Rejection Ratio Note 3
Note 1
CMRR
40
dB
Strobe Characteristics (Logic "0" inhibits output)
"0" Input Current
V
S
= 0.4 V
I
IL
-
-0.2
-0.4
mA
"1" Input Current
V
S
= 2.7V
I
IH
-
-1.0
+40
A
"0" Input Voltage
V
IL
-
-
0.7
V
"1" Input Voltage
V
IH
2.0
-
-
V
Strobe Delay (turn-on or turn-off)
Note 1
t
SD
-
-
150
nS
Threshold Characteristics (Sinewave input)
Internal Threshold Voltage (referred to the
bus) pins 6 and 11 grounded
100KHz-
1MHz
V
TH
0.60
0.8
1.05
V p-p
External threshold control (pins 6 &11 open,
resistors from pin 5 and 12 to ground)
Max R =
10K
R
TH
/ V
TH
-
4000
-
/ V p-p
Output Characteristics, RX DATA and RX DATA
"1" State
I
OH
= -0.4
mA
V
OH
2.5
3.6
-
V
"0" State
I
OL
= 4 mA
V
OL
-
0.35
0.5
V
Delay, (average) from differential input zero
crossings to RX DATA and RX DATA output
50% points
Note 1
t
DRX
-
300
450
nS
Power Data
Power Supply Currents (Power supplies set at +15V, -15V, +5V)
Duty Cycle
+V
-V
5V
Transmitter Standby
60mA
75mA
35mA
25% duty cycle Note 1
80mA
95mA
50% duty cycle
105mA
120mA
100% duty cycle Note 1
160mA
180mA
Recommended Power Supply Voltage Range
+V
+11.4 Volts to +15.75 Volts
-V
-11.4 Volts to -15.75 Volts
Logic
+4.5 Volts to + 5.5 Volts
Aeroflex Circuit Technology
SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700
5
NOTES
1. Characteristics guaranteed by design, not production tested.
2. Power on or off, measured from 75KHz to 1MHz at point A-A' and transformer self impedance of 3K
minimum at
1MHz.
3. Specifications apply over the temperature range of -55C to +125C (Case Temperature) unless otherwise noted.
4. All typical values are measured at +25C.
The information contained in this data sheet is believed to be accurate; however, Aeroflex Circuit Technology. assumes no
responsibility for its use, and no license or rights are granted by implication or otherwise in connection therewith.
Figure 3 Transmitter (TX) Output Amplitude
Figure 4 Transmitter (TX) Output offset
Figure 5 Typical Transformer Connection
Figure 6 Power Dissipation vs Duty Cycle
0 10 20 30 40 50 60 70 80 90 100
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
DUTY CYCLE, PERCENT
P
O
W
E
R
D
I
S
S
I
P
A
T
I
O
N
W
A
T
T
S
OUTPUT OFFSET
*
OUTPUT OFFSET
*
LAST BIT
2.5 sec
*Offset measured at point A-A' in Fig 5
N1:N2
A
A'
B'
B
TX DATA OUT
TX DATA OUT
RX DATA IN
RX DATA IN
70
70
52.5
52.5
Center
tap
Transformer turns ratios:
N1:N2 = 1:1
N1:N3 = 1:0.707
Use Aeroflex 25T1553-1
N1:N3 for
stub
coupling
0 Volts
Magnified View
(TYPICAL)
vs Control Voltage
0 1 2 3 4 5 6 7 8 9 10
CONTROL VOLTAGE
O
U
T
P
U
T
A
M
P
L
I
T
U
D
E
12
15
27
30
24
21
18
9
6
3
0
Typical
Slope = 3V
P
-
P
/Vdc
V
P
-
P
@ BB'
Vdc
Aeroflex Circuit Technology
SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700
6
Configurations and Ordering Information
Model No.
DESC No.
Receiver Data level
Case
Specs.
ARX 4418
5962-9208503HXX
Normally Low
Plug In
1553 & Macair
ARX 4418-FP
5962-9208503HYX
Normally Low
Flat Pack
1553 & Macair
ARX 4418-LPFP
5962-TBD
Normally Low
Low Profile Flat Pack
1553 & Macair
ARX 4417
5962-TBD
Normally High
Plug In
1553
ARX 4417-FP
5962-TBD
Normally High
Flat Pack
1553
ARX 4417-LPFP
5962-TBD
Normally High
Low Profile Flat Pack
1553
Specifications subject to change without notice.
Aeroflex Circuit Technology
35 South Service Road
Plainview New York 11803
Telephone: (516) 694-6700
FAX: (516) 694-6715
Toll Free Inquiries: 1-(800)THE-1553
1.27
MAX
24
1
13
12
FLAT PACKAGE
1.10
0.175
MAX
0.24
MIN
0.018 DIA.
0.002
0.10 Typ
0.002
1.27
0.080
0.015
0.009
0.002
Notes
1. Dimensions shown are in inches.
2. Pins are equally spaced at 0.1000.002 tolerance, non-cumulative, each row.
1.27 MAX
1.10
1.27 MAX
0.017
0.400
MAX
2 sides
PLUG-IN PACKAGE
0.100
0.167 for Low Profile Flat Pack
0.200 for Std Flat Pack
Designator
Pin 1 & ESD
C I R C U I T T E C H N O L O G Y
Pin Function
1
TX DATA OUT
2
TX DATA OUT
3
TX GND (+5)
4
+15V (TX)
5
EXT. DATA THRES
6
INT. DATA THRES
7
RX DATA OUT
8
STROBE
9
RX GND (+5V)
10 RXDATA OUT
11 INT DATA THRES
12 EXT DATA THRES
13 +15V (RX)
14 AMP CONTROL
15 RX DATA IN
16 RX DATA IN
17 GND
18 CASE GND
19 -15V (RX)
20 +5V
21 TX INHIBIT
22 TX DATA IN
23 TX DATA IN
24 -15V(TX)
MAX
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