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ARX4435N Transceiver for Macair H009 Specification
Features
Preliminary
CIRCUIT TECHNOLOGY
www.aeroflex.com
* ARX4435N transceiver meets Macair H009 data bus specifications * Transmitter can be used to drive clock signal line * Operates with 15 Volts to 12 Volts power supplies * Low power direct replacement for CT1641 and CT1816 devices * Voltage source output for higher bus drive power * Plug-in and flat package available * Monolithic construction using linear ASICs * Processed and screened to MIL-STD-883 specs * MIL-PRF-38534 compliant devices available
General Description
The Aeroflex Laboratories Incorporated model ARX4435N and ARX4435NFP are new generation monolithic transceivers which provides compliance with Macair H009 data bus requirements. The ARX4435N and ARX4435NFP perform the front-end analog function of inputting and outputting data through a transformer to a H009 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 ARX4435N 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.
X LE FN O 35 R49 E 4 37 AX8 R -8 AA S U
XP LE F FN O59 R37 E 44 3 A X -88 RA AS U
TX DATA IN TX DATA IN DRIVER SHAPING TX INHIBIT EXT THRESHOLD DATA DATA SET INTERNAL THRESHOLD EXT THRESHOLD DATA +5 V -12V or -15V RX DATA IN RX DATA IN +15V or +12V STROBE INPUT AMP DATA -VTH V+VTH ~4K + - ~4K - ACTIVE FILTER +
ARX4435NFP / ARX4435N Transceivers
TX DATA OUT OUTPUT STAGE V+ TX DATA OUT
Transmitter
The Transmitter section accepts complementary 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 termination, the data bus signal produced is 20 Volts nominal P-P at A-A'. (See Figure 5.) When both DATA and DATA inputs are held low or high, the transmitter output impedance is low, and signal is "removed" from the line. In addition,
COMP.
RX DATA OUT
COMP.
RX DATA OUT
Block Diagram (without Transformer)
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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 Transmitter Logic Waveforms, Figure 1). The transmitter utilizes an active filter to suppress harmonics above 1 MHz to meet H009 Macair specifications. The transmitter may be safely operated for an indefinite period with the output short circuited at 100% duty cycle.
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). 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 Region 1 2 3
DATA IN
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, Transmitter signal on, low Z.
Figure 2 - Receiver Logic Waveforms
LINE TO LINE INPUT
Rx DATA OUT
Note overlap
Rx DATA OUT
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
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SCD4435N REV A 7/27/00 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 Maximum junction to case temperature rise (100 % duty cycle) Junction-Case thermal resistance -55C to +125C -65C to +150 C 15 V P.S. to 18V MAX 40 V 10V 150 mA 3.0 Watts 15C 5C/W +5 V P.S. to +7V MAX
-0.3 V to +5.5 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
VIN = 0.4 V VIN = 2.7 V
Symbol
IILD IIHD VIHD VIHD
Min
Typ
-0.2 1.0
Max
-0.4 40 0.7
Unit
mA A V V
2.0
Inhibit Characteristics
"0" Input Current "1" Input Current "0" Input Voltage "1" Input Voltage Delay from TX inhibit(01) to inhibited output Delay from TX inhibit, (10) to active output Differential output noise, inhibit mode Differential output impedance (inhibited) Note 2 Note 1 Note 1 VIN=0.4V VIN=2.7V IILI IIHI VILI VIHI tDXOFF tDXON VNOI ZOI 10K 2 350 200 0.8 700 500 10 -0.2 1.0 -0.4 40 0.7 mA A V V nS nS mV p-p
Output Characteristics
Differential output level, pt A-A on Fig. 5 Rise and fall times (10% to 90% of p-p output), pt A-A on Fig. 5 Output offset at pt A-A on Fig. 5, 2.5 S after midpoint crossing of the last bit Delay from 50% point of TX DATA or TX DATA input to zero crossing of differential signal. (note1)
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RL=170
VO tr
17 200
21
24 300
V p-p nS
RL=170
VOS
265
mV peak
tDTX
220
350
nS
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SCD4435N REV A 7/27/00 Plainview NY (516) 694-6700
Electrical Characteristics, Receiver Section
Parameter
Differential Input Impedance (Note 1) Differential Input Voltage Range Input Common Mode Voltage Range Common Mode Rejection Ratio Note 1 Point A-A on Figure 5
Condition
f= 1MHz
Symbol
ZIn VIDR VICR CMRR
Min
20K
Typ
Max
Unit
V p-p V p-p dB
40 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. VS=0.4 V VS=2.7 V IIL IIH VIL VIH tSD 2.0 150 -0.2 1.0 -0.4 +40 0.7 mA A V V nS
Threshold Characteristics (Sinewave input)
Internal Threshold Voltage (Referred to the bus) Pins 6 and 11 to GND 100KHz-1MHz VTH 0.60 0.80 1.15 V P-P
External Threshold Pins 6 & 11 open, Pin 5 and Pin 12 with a 10K resistor to GND, 1MHZ Sinewave applied to point A-A
VTH(EXT)
1.9
2.2
2.5
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 IOH =-0.4 mA IOL = 4 mA VOH VOL tDRX 2.5 3.6 0.35 275 0.5 450 V V nS
Power Data
Power Supply Currents (Power supplies set at +15V, -15V, +5V) +V -V ICC IEE Duty Cycle
TYP Transmitter Standby 25% duty cycle 50% duty cycle 100% duty cycle 5mA 20mA 40mA 85mA MAX 10mA 30mA 60mA 120mA TYP 25mA 40mA 60mA 105mA MAX 35mA 60mA 80mA 140mA 25mA 35mA TYP
5V IL
MAX
Recommended Power Supply Voltage Range
+V -V Logic +11.4 Volts to +15.75 Volts -11.4 Volts to -15.75 Volts +4.5 Volts to +5.5 Volts
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SCD4435N REV A 7/27/00 Plainview NY (516) 694-6700
Figure 3 - Transmitter (TX) Output Wave form
Figure 4 - Transmitter (TX) Output offset
LAST BIT
tf* 90% Magnified View
OUTPUT OFFSET*
17V P-P MIN 24V P-P MAX
0 Volts
0 volts
OUTPUT OFFSET*
10%
2.5 sec
tr* * 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
Figure 6 - Power Dissipation vs. Duty Cycle
4.0 35 N1:N2 A 170 A' TX DATA OUT RX DATA IN RX DATA IN Transformer turns ratio: N1:N2 = 1:1 Use Aeroflex 25T1553-1 0 0 10 20 30 40 50 60 70 80 90 100 35 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 at 1mHz at point A-A', power on or off. 3. Specifications apply over the temperature range of -55C to +125C (case temperature) unless otherwise noted. 4. All typical values are measured at +25C.
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SCD4435N REV A 7/27/00 Plainview NY (516) 694-6700
CIRCUIT TECHNOLOGY
Package Configurations and Pinouts
PLUG-IN PACKAGE
1.27 MAX 1.10 24 1.27 MAX 13
Pin Connections
1. TX DATA OUT 2. TX DATA OUT 3. TX GND (+5V) 4. +15V (TX) 5. EXT. DATA THRES 6. INT. DATA THRES 7. RX DATA OUT 8. STROBE 9. RX GND (+5V) 10. RXDATA OUT 1.10 11. INT DATA THRES 12. EXT DATA THRES 13. +15V (RX) 14. N.C. 15. RX DATA IN 16. RX DATA IN 17. GND 18. CASE GND 0.175 19. -15V (RX) MAX 20. +5V 21. TX INHIBIT 22. TX DATA IN 23. TX DATA IN 24. -15V (TX) 0.100
FLAT PACKAGE
1.27 MAX 0.017 0.002 Designator Pin 1 & ESD 1.27 MAX
12 Designator Pin 1 & ESD
0.10 Typ 0.400 MAX
2 sides
0.24 MIN 0.018 DIA. 0.002
0.009 0.002 0.167 for Low Profile Flat Pack 0.200 for Std Flat Pack 0.080 0.015
Notes 1. Dimensions shown are in inches. 2. Pins are equally spaced at 0.1000.002 tolerance non-cumulative each row.
Configurations and Ordering Information
Model No.
ARX4435N ARX4435N-FP
DESC No.
To Be Assigned To Be Assigned
Receiver Data level
Normally High Normally High
Case
Plug In Flat Pack
Specs.
H009 Macair H009 Macair
The information contained in this data sheet is believed to be accurate; however, Aeroflex Laboratories Incorporated assumes no responsibility for its use, and no license or rights are granted by implication or otherise in connection therewith.
Specifications subject to change without notice.
Aeroflex Circuit Technology 35 South Service Road Plainview New York 11803 www.aeroflex.com
Aeroflex Circuit Technology
Telephone: (516) 694-6700 FAX: (516) 694-6715 Toll Free Inquiries: (800) 843-1553 E-Mail: sales-act@aeroflex.com
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SCD4435N REV A 7/27/00 Plainview NY (516) 694-6700

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