scd4404 rev f features ? arx4404 transceiver meets macair (a3818, a4905, a5232 and a5690) & mil-std-1553a/b ? arx4407 transceiver meets mil-std-1553 and sae-as15531 ? bipolar supply 15v to 12v, logic supply +5v dc ? direct replacement for ct3231 and ct3232 ? variable receiver threshold capability ? monolithic construction ? voltage source output for higher bus drive power ? low receiver data level ve rsions: arx4440 and arx4467 ? designed for commercial, industrial and aerospace applications ? mil-prf-38534 compliant devices available ? aeroflex-plainview is a class h & k mil-prf-38534 manufacturer ? desc smd 5962-91749 general description the aeroflex plainview transceiver model arx4404 and is a new generation monolithic transceiver which provide full compliance with macair and mil-std-1553 data bus requirements. the model arx4404 and arx4407 performs the front-end analog function of inputting an d 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 macair (a-3818, a-4905, a-5232 and a-5690), mil-std-1553a/b and sae-as155 3. the arx4407 is compatible with mil-std-1553a/b and sae-as15531. design of these transceivers reflects particular attention to act ive filter performance. this results in low bit and word error rate with superior waveform purity and minimal zero crossover distortion. the arx4404 active filter design has additional high frequency roll-off to provide the required macair lo w 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 low duty cycles. an optional receiver input threshold adjustme nt can be accomplished by the use of the ''external threshold" terminals or use of the "set internal threshold" terminals. transmitter the transmitter section accepts bi-phase ttl data at the input and when coupled to the data bus with a 1:1 transformer the data bus signal produced is 7.0 volts minimum p-p at point 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 ?remov ed? 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 ove r 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 indefi nite period at 100% duty cycle into a data bus short circuit. the transceiver utilizes an active filter to suppress harmonics ab ove 1mhz. the transmitter may be safely operated at 100% dut y cycle for an indefinite period into a short circuited 1553 bus. receiver the receiver section accepts bi-phase differential data at the input and produces two ttl sign als at the output. the outputs ar e data and data , and represent positive and negative excursions of the inpu t beyond a pre-determined threshold (see receiver logic waveforms - figure 2). the internal threshold is nominally set to detect data bus si gnals exceeding 1.05 vp-p and reject signals less than 0.6 vp-p wh en used with a 1:1 turns ratio transformer (see figure 3 or 4 for transformer data and typical conn ection). this threshold setting can be held by grounding the appropriate pins or mo dified with the use of external resistors. a low level at the ''strobe'' input inhibits the data and data outputs. if unused, a 2k ohm pull-up to +5v dc is recommended. arx4404 & arx4407 transceiver standard products www.aeroflex.com/avionics april 5, 2005 for macair (a3818, a4905, a5232, a5690), mil-std-1553 & sae-as15531
2 scd4404 rev f figure 1 ? transmitter lo gic waveforms idealized figure 2 ? receiver logi c waveforms idealized data in data in inhibit line to line output notes: 2. data and data inputs must be complementary waveforms or 50% du ty cycle average, with no delays between them. 3. data and data must be in the same state during off time (both high or low). 1. line to line waveforms illustrate macair signals, mil- std-1553 signals are trapezoidal. note: waveforms shown are for normally low devices. for normally high receiver output level devices, the receiver outputs ar e swapped as shown by the dashed lines note overlap line to line input data out data out shaping output stage comp. comp. active filter input amp driver tx data in tx data in tx inhibit +5v rx data in rx data in strobe tx data out tx data out rx data out rx data out -12v or -15v ext threshold data set internal data data ext. threshold data +12v or +15v v+ v- threshold gnd case gnd block diagram (without transformer
3 scd4404 rev f absolute maximum ratings operating case temperature -55c to +125c storage case temperature -65c to +150c power supply voltages 15v dc to 18v dc +5v dc to +7v dc 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 characteristi cs ? transmitter section input characteristics, tx data in or tx data in parameter condition symbol min typ max unit "0" input current v in = 0.4v i ild - -0.2 -0.4 ma "1" input current v in = 2.7v i ihd -140 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 -1.040 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 mvp-p differential output impedance (inhibited) note 2 z oi 2k - - output characteristics differential output level, figure 5, point a-a" r l = 35 v o 77.59 vp-p rise and fall times (10% to 90% of p-p output) arx4404 t r & t f 200 250 300 ns arx4407 100 180 300 output offset at point a-a? on figure 3, 2.5 s after midpoint crossing of the parity bit of the last word of a 660 s message r l = 35 v os - - 90 mv peak delay from 50% point of tx data or tx data input to zero crossing of diff erential signal. (note 1) arx4404 t dtx - 330 450 ns arx4407 - - 360 ns
4 scd4404 rev f notes:1. characteristics guaranteed by design, not production tested. 2. power on or off, measured from 75khz to 1mhz at point a-a' and transfor mer 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. electrical charac teristics ? receiver section parameter condition symbol min typ max unit differential input impedance f = 1mhz z in 10k - - differential input voltage range -v idr --40 vp-p input common mode voltage range note 1 v icr 10 - - vp-p common mode rejection ratio note 1 cmrr 40 - - db strobe characteristics (logic "0" inhibits output) "0" input current v s = 0.4v i il - -0.2 -0.4 ma "1" input current v s = 2.7v i ih -1+40a "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 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 -0.350.5 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) transmitter standby i cc i ee i l 30 50 25 60 75 35 ma 25% duty cycle i cc i ee il 50 70 25 85 105 35 50% duty cycle i cc i ee i l 75 45 25 110 130 35 100% duty cycle i cc i ee i l 120 140 25 160 180 35 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
5 scd4404 rev f figure 6 ? typical power dissipation output offset * output offset * last bit 2.5 sec *offset measured at point a-a? in figure 5 0 volts magnified view figure 4 ? transmitter (tx) output offset 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 power dissipation watts typical package configuration outline 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 min 2 sides plug-in package 0.100 0.167 for low profile flat pack 0.200 for std flat pack pin function 1tx data out 2tx data out 3 tx gnd (+5) 4 +15v (tx) 5 ext. data thres 6 int. data thres 7rx data out 8strobe 9 rx gnd (+5v) 10 rxdata out 11 int. data thres 12 ext. data thres 13 +15v (rx) 14 nc 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 designator pin 1 & esd 6.5v p-p min 8.5v p-p max 90% 10% t r * t f * 0 volts figure 3 ? transmitter (tx) output wav e f o r m 6.5v p-p min 8.5v p-p max 90% 10% t r * t f * * rise and fall times measured at point a-a? in figure 5 0 volts n1:n2 a a? b? b tx data out tx data out rx data in rx data in 70 70 52.5 52.5 ctr tap transformer turns ratios: n1:n2 = 1:1 n1:n3 = 1:0.71 use aeroflex 25t1553-1 n1:n3 for stub coupling figure 5 ? typical trnsformer connection vs. duty cycle
6 plainview, new york toll free: 800-the-1553 fax: 516-694-6715 se and mid-atlantic tel: 321-951-4164 fax: 321-951-4254 international tel: 805-778-9229 fax: 805-778-1980 west coast tel: 949-362-2260 fax: 949-362-2266 northeast tel: 603-888-3975 fax: 603-888-4585 central tel: 719-594-8017 fax: 719-594-8468 www.aeroflex.com info-ams@aeroflex.com our passion for performance is defined by three attributes represented by these three icons: solution-minded, performance-driven and customer-focused aeroflex microelectronic solutions reserves the right to change at any time without notice the specifications, design, function, or form of its products described herein. all parameters must be validated for each customer's application by engineering. no liability is assumed as a result of use of this product. no patent licenses are implied. scd4404 rev f configurations and ord ering information * model no. desc no. receiver data level case specs. arx4404-001-1 5962-9174909hxc normally high plug in 1553 & macair arx4404-001-2 5962-9174909hxa arx4404-201-1 5962-9174909hyc flat pack arx4404-201-2 5962-9174909hya arx4407-001-1 5962-9174908hxc plug in 1553 arx4407-001-2 5962-9174908hxa ARX4407-201-1 5962-9174908hyc flat pack arx4407-201-2 5962-9174908hya arx4440 to be assigned normally low plug in 1553 & macair arx4440-fp to be assigned flat pack arx4467 to be assigned plug in 1553 arx4467-fp to be assigned flat pack * not for new designs. see act4404n series. special note please note that pins 6 and 11 must be grounded in order for the receiver to operate. these pins were no connect in the 3400 series, because the external variable threshold was not an option. if using the arx4404 to replace the arx3404 " arx4440 " arx3464 " arx4407 " arx3407 " arx4467 " arx3467
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