• ARX4435 Transceiver meets Macair H009 data bus
specifications
• Transmitter can be used to dri ve clock signal l ine
• Operates with ±1 5 Volts to ±12 Volts power supplies
• Direct replacement for CT1641 and CT1816 devices
• Voltage source output for higher bus dri ve power
• Plug-in and flat package available
• Monol ithic construc tion using linear ASICs
• Processed and screened to MIL-STD-883 specs
• MIL-PRF-38534 compliant devices available
AEROFLEX
AEROFLEX
ARX 4435FP
USA-88379
ARX4435FP/4435 Transceiv ers
ARX 4435
USA-88379
CIRCUIT TECHNOLOGY
www.aeroflex.com
General Description
The Aeroflex Laboratories
Incorporated model ARX4435 and
ARX4435FP are new generation
monolithic transceivers which
provides compliance with Macair
H009 data bus requirements
The model ARX4435 and
ARX4435FP perform the front-end
analog function of inputting and outputting data through a transformer to
a H-009 data bus.
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 ARX4435
series active filter design has additional high frequency roll-off to provide the required low harmonic
distortion waveform without increasing the delay characteristics significantly.
Efficient transmitter electrical and
thermal design results in low internal
power dissipation and temperature
rise at high and low duty cycle.
The Transmitter section accepts
complementar y TTL data at the input,
and when coupled to the data bus
with a 1:1 transformer, isolated on the
transceiver side with two 35 Ohm
fault isolation resistors, and loaded by
a 170 Ohm ter mination, the data bus
signal produced is 20 volts nominal
P-P at A-A’. (See Figure 5.) When
both DATA and DATA
low or high, the transmitter output
impedance is low, and signal is
“removed” from the line. In addition,
inputs are held
Page 2
an overriding “INHIBIT” input returns the output
impedance to a high state. A logic “1” applied to the
“INHIBIT” takes priority over the condition of the data
inputs and disables the transmitter. (See Tran smitter
Logic Waveforms, Figure 1.)
The transmitter utilizes an active filter to suppress
harmonics above 1 mHz to meet H 009 Macair specifications. The transmitter may be safely operated for
an indefinite period with the ou tput short circuited at
100% duty cycle.
Receiver
The Receiver section accepts bi-phase differential
data at the input and produces two TT L signals at the
output. The outputs are DATA and DATA
Figure 1 - Transmitter Logic Waveforms
Region 1 2 3
DATA IN
, and repre-
sent 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.)
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
INHIBIT
LINE TO LINE
OUTPUT
Notes: 1. Data and DATA inputs must be complementry waveforms or 50% duty cycle average, with no delays between them, and in the same state during
the off time (both high and low).
2. Region 1 ; no output signal, High Z state, (Receive Mode), Region 2; No Output signal, Low Z state, (Terminate Mode), Region 3, Tr ansmitter signal
on, low Z.
Figure 2 - Receiver Logic Waveforms
LINE TO LINE
INPUT
Rx DATA OUT
Rx DATA
Aeroflex Circuit TechnologySCD4435 REV B 2/3/99 Plainview NY (516) 694-6700
OUT
Note: Waveforms shown ar e for normally low devices. For normal ly high receive r output
devices, the receiver outputs are swapped as shown by the dashed lines
level
2
Note overlap
Page 3
Absolute Maximum Ratings
Operating case temperature
Storage case temperature
Power supply Vol tages
±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
Receiver input voltage (common mode)±10V
-55° C to + 1 25°C
-65°C to +150 °C
±40 V
Driver peak output current
Total package power dissipation over the full operating
case temperature range
Maximum junction to case temperature rise
* Rise and fall times measured at point A-A’ in Fig 5
tf*
0 Volts
0 volts
*Offset measured at point A-A’ in Fig 5
Figure 5 – Typical Transformer connectionFigure 6 – Power Dissipation vs. Duty Cycle
4.0
3.5
3.0
2.5
2.0
1.5
POWER DISSIP ATION
WA TTS
1.0
0.5
0
0 10 20 30 40 50 60 70 80 90 100
DUTY CYCLE, PERCENT
(TYPICAL)
TX DATA OUT
TX DATA
OUT
RX DATA
RX DATA IN
IN
35
Ω
N1:N2
A
A’
35
Ω
Transformer turns ratio:
N1:N2 = 1:1
Use Aeroflex 25T1553-1
170
Ω
Magnified View
OUTPUT OFFSET*
OUTPUT OFFSET*
Notes:
1. Charact eristics guaranteed by design, not production tes te d.
2. Measured at 1mH z at p oint A-A’, power on or off.
3. Specifications apply over the temperature range of -55°C to +125°C (case temperature)
unless otherwise noted.
4. All typic al valu es are measured at +25°C.
Aeroflex Circuit TechnologySCD4435 REV B 2/3/99 Plainview NY (516) 694-6700
5
Page 6
CIRCUIT TECHNOLOGY
Package Configurations and Pinouts
PLUG-IN PACKAGE
1.27 MAX
1.10
2413
1.27
MAX
Designator
Pin 1 & ESD
0.24
MIN
0.018 DI A.
±0.002
Notes
1. Dimensions shown are in inches .
2. Pins are equally spaced at 0.100±0.002 tolerance non-cu mulative each row.
1.10
12
0.100
Pin Connections
1. TX DATA OUT
2. TX DATA
3. TX GND (+5V)
4. +15V (TX)
5. E XT. DATA THRES
6. IN T. DATA T HR ES
7. RX DATA OUT
8. STROBE
9. RX GND (+5V)
10. RXDATA
11. INT DATA THRES
12. EXT DATA THRES
13. +15V (RX)
14. N.C.
15. RX DATA IN
16. RX DATA
17. GND
18. CASE GND
0.175
19. -15V (RX)
MAX
20. +5V
21. TX INHIBIT
22. TX DAT A IN
23. TX DATA
24. -15V (TX)
OUT
OUT
IN
IN
0.167 for Low Profile Flat Pack
0.200 for Std Flat Pack
1.27 MAX
FLAT PACKAGE
1.27 MAX
Designator
Pin 1 & ESD
±0.002
0.400
MAX
2 sides
0.009
±0.002
0.080 ±0.015
0.017
0.10 Typ
Configurations and Ordering Information
Model No.DESC No.
Receiver Data level
Case
ARX4435To Be AssignedNormally HighPlug InH009 Macair
ARX4435-FPTo Be AssignedNormally HighFlat PackH009 Macair
ARX4435-701-Normally HighPlug InH009 Macair
Commercial ( 0°C - 70°C)
The information contained in this data sheet is believed to be accurate; however, Aeroflex Laboratories Incorporated assumes no
responsibility for it s use, and no license or rights ar e granted by implication or otherise in connection therewit h.
Specifications subject to change without notice.
Aeroflex Circuit Technology
35 South Service Road
Plainview New York 11803
www.aeroflex.com
Aeroflex Circuit TechnologySCD4435 REV B 2/3/99 Plainview NY (516) 694-6700
6
Toll Free Inquiries: (800) 843-1553
E-Mail: sales-act@aeroflex.com
Telephone: (516) 694-6700
FAX: (516) 694-6715
Specs.
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