tm data device corporation 105 wilbur place bohemia, new york 11716 631-567-5600 fax: 631-567-7358 www.ddc-web.com for more information contact: technical support: 1-800-ddc-5757 ext. 7234 features ? only requires +5v power supply small size - 64 pin qfp low power dual transceiver harris i/o compatibility conforms fully to mil-std-1553a, 1553b, and 1760 description the bu-63152 transceiver is a complete dual transmitter and receiv- er pair conforming fully to mil-std-1553a, 1553b, and 1760. features include: +5v power supply voltage, harris interface type, completely independent dual redundant operation, and small size (64-pin qfp). the receiver section of the bu-63152 series accepts phase-modulat- ed bipolar data from a mil-std-1553 data bus and produces ttl level signals at its outputs: rx data out and rx data out . these outputs represent positive and negative variations of the input data signals beyond an internally fixed threshold level. an external strobe input enables or disables the receiver?s outputs. the transmitter section accepts bipolar ttl signal data at its tx data in and tx data in inputs and produces phase-modulated bipolar data at the tx data out and t x data out outputs. when used with the recommended transformers, the transmitter typically produces 21vp-p for transformer coupled outputs and 7.2vp-p at the bus. an external input, inhibit, takes priority over the transmitter inputs and disables the transmitter when activated with a logic ?1.? the small size, +5v power supply voltage, and compliance with mil- std-1553a, 1553b, and 1760 simplify engineering design, making it an excellent choice for interfacing with any mil-std-1553 system. ? 2000 data device corporation bu-63152 mil-std-1553 data bus dual transceiver make sure the next card you purchase has...
2 data device corporation www.ddc-web.com bu-63152 figure 1. bu-63152 block diagram +5 v receiver strobe bi phase ttl data rx data rx data decoder comparator comparator filter receiver section limiter transmitter section driver driver shaping network shaping network phase modulated bipolar data rx data in rx data in tx data out tx data out short or long stub coupling isolation transformer 1553 data bus tx data in tx data in encoder tx inhibit
3 data device corporation www.ddc-web.com bu-63152 table 1. bu-63152 specifications parameter min typ max units absolute maximum rating supply voltage +5 v (vcc) receiver input voltage (to transformer) logic voltage input range -0.3 -0.3 5.0 7.0 20 vcc+0.3 v vp-p v receiver differential input resistance (notes 1-6) differential input capacitance (notes 1-6) threshold level (note 7) common mode voltage (note 8) 2.5 0.20 5 0.860 10 kohm pf vp-p vpeak transmitter differential output voltage direct coupled across 35 ? , measured on bus transformer coupled across 70 ? , measured on stub (note 9) output noise, differential (direct coupled) dynamic output offset voltage, transformer coupled across 70 ? rise/fall time 6 20 -250 100 7.4 22 0 150 9 27 10 +250 300 vp-p vp-p mvp-p, diff mvp-p, diff ns logic v ih v il i ih (txin, txin , txinhibit) i ih (strobe) i il (txin, txin , txinhibit) i il (strobe) v oh (vcc=4.75v,i oh =max) v ol (vcc=4.75v, i ol =min) i ol i oh power supply requirements voltages/tolerances +5v current drain (both channels) idle 25% transmitter duty cycle (one channel transmitting) 50% transmitter duty cycle (one channel transmitting) 100% transmitter duty cycle (one channel transmitting) power dissipation, vcc=5.0v one channel (note 10) idle 25% transmitter duty cycle 50% transmitter duty cycle 100% transmitter duty cycle 2.0 0 20 0 -100 4.0 4.0 4.75 5.0 vcc 0.8 100 0 -20 0 0.4 0 -2.4 5.5 100 216 332 565 .25 .5 .7 1.2 v v ? ? ? ? v v ma ma v ma ma ma ma w w w w parameter min typ max table 1. bu-63152 specifications (cont.) units thermal operating ambient temperature thermal resistance, junction- to-ambient (either channel) (note 11) operating junction temperature storage temperature lead temperature (soldering, 10 sec.) physical characteristics package size weight -55 -55 -65 40 85 45 150 150 +300 64-pin qfp 14.00 x 14.00 x 2.00 (0.551 x 0.551 x 0.079) 0.5 (14) c c/w c c c mm (in) oz (g) (notes 1 through 6 are applicable to the receiver differential resistance and differential capacitance specifications:) (1) specifications include both transmitter and receiver (assumed tied together externally). (2) impedance parameters are specified directly between pins tx/rx a(b) and tx/rx a(b) of the hybrid. (3) it is assumed that all power and ground inputs to the hybrid are connected. (4) the specifications are applicable for both unpowered and powered condi- tions. (5) the specifications assume a 2 volt rms balanced, differential, sinusoidal input. the applicable frequency range is 75 khz to 1 mhz. (6) minimum resistance and maximum capacitance parameters are guaranteed over the operating range, but are not tested. (7) the threshold level, as referred to in this specification, is meant to be the maximum peak-to-peak voltage (measured on the stub) that can be applied to the receiver's input without causing the output to change from the off state. (8) assumes a common mode voltage within the frequency range of dc to 2 mhz, applied to pins of the isolation transformer on the stub side (either direct or transformer coupled), and referenced to transceiver ground. transformer must be a ddc recommended transformer or other transformer that provides an equivalent minimum cmrr. (9) mil-std-1760 requires minimum output voltage of 20 vp-p on the stub con- nection. (10) power dissipation specifications assume a transformer coupled configura- tion, with external dissipation (while transmitting) of 0.14 watts for the active isolation transformer, 0.08 watts for the active coupling transformer, 0.45 watts for each of the two bus isolation resistors, and 0.15 watts for each of the two bus termination resistors. (11) thermal resistance, junction-to-ambient (either channel) applies when the device is soldered to a 4 in x 4 in x 0.060 in (fr4 or equivalent) pc board with a ? 1-oz ? (1.4 mil thickness) ground-plane layer on the back of the board, positioned horizontally in still air.
4 data device corporation www.ddc-web.com bu-63152 receiver operating mode the receiver section accepts data from a mil-std-1553 data bus when properly coupled in either of the two possible configu- rations (long or short stub). this data is converted to bi-phase ttl and made available for decoding at the rx data and rx data terminals. applying a logic ? 1 ? to the strobe input allows data to pass through to the receiver output. applying a logic ? 0 ? to the strobe input turns the receiver output off. the bu-63152 receiver outputs are both at a logic ? 0 ? when they are either strobed off, or no signal is being received. this is directly compatible with a ? harris ? type of encoder/decoder. compatibility to a ? smiths ? type of encoder/decoder may be accomplished by swapping the rx data out and rx data out outputs and then inverting them (see figure 4). bu-63152 waveforms figure 2 illustrates the waveforms for the bu-63152. note that data and data inputs must be complementary waveforms of 50% average duty cycle while transmitting. pulse transformers interfacing the bu-63152 to a mil-std-1553 bus requires pulse transformers. beta transformer technology corporation (bttc), a subsidiary of ddc, manufactures transformers in a variety of mechanical configurations with the required turn ratios of 1:2.5 direct coupled and/or 1:1.79 transformer coupled. table 2 provides a listing of many of these. for further infor- mation, contact bttc at 631-244-7393 or at www.bttc-beta.com. general the bu-63152 is a dual redundant transmitter and receiver packaged in a 64-pin qfp. it is directly compatible to harris 15530 encoder/decoder and has internal (factory preset) thresh- old levels. requiring only a +5v power supply, the bu-63152 is designed for use in any mil-std-1553 application. figure 1 shows a bu-63152 transceiver connected to a mil- std 1553 data bus. once transformer isolated, coupling to a mil-std-1553 data bus can be either short stub (direct) or long (transformer). the recommended transformer for long and short stub coupling is beta p/n b-3226 (through hole) or b-3227 (sur- face mount). there are other transformer configurations avail- able from beta. reference figure 3 and table 2. transmit operating mode the transmitter section accepts encoded ttl data and converts it to phase-modulated differential format by means of a wave- shaping network and driver circuitry. these driver outputs are coupled to a mil-std-1553 data bus via a transformer which is driven from the tx data out and tx data out terminals. these output terminals can be put into a high impedance state when transmitting by bringing the respective tx_inhibit input to logic ? 1 ? , or by placing both inputs at the same logic level. table 3, transmit operating mode, lists the functions for the output data and input data in reference to the state of inhibit. the transceivers are able to operate in a ? wraparound ? mode. this allows output data to be monitored by the receiver section and returned to the decoder where it can be checked for errors. tx data in tx data in line-to-line output line-to-line input rx data out rx data out notes: (1) tx data in and rx data out are ttl signals. (2) tx data in inputs must be at opposite logic levels during transmission, and at a low logic level when not transmitting. (3) line-to-line output voltage is measured between tx data out and tx data out. (4) line-to-line input voltage is measured on the data bus. figure 2. typical operating waveforms
5 data device corporation www.ddc-web.com bu-63152 short stub (direct coupled) 1 ft max (1:2.5) 0.75 z 0 0.75 z0 20 ft max bus-25679 21 v pp long stub (transformer coupled) or (1:1.79) (1:1.4) 8 1 3 4 z 0 (70 ?, nom) data bus rx 29 v pp 11.7 v pp rx 55 ? 55 ? bu-63152 tx tx z 0 (70 ?, nom) notes: (1) value of isolation resistors is 52.5 ? (0.75z0). (2) one half of dual transceiver shown. (3) bus must be terminated with its characteristic impedance at both ends. 11.7 v pp table 2. recommended beta transformers for use with bu-63152 b-3819 single epoxy transformer, surface mount, hi-temp solder, 0.625" x 0.625", 0.220" max height. b-3310 dual epoxy transformer, side by side, surface mount, 0.930" x 0.630", 0.155" max height b-3261 dual epoxy transformer, side by side, flat pack, 0.930" x 0.630", 0.155" max height b-3300 b-3072 dual epoxy transformer, side by side, through-hole, 0.930" x 0.630", 0.155" max height b-3818 hlp-6014 single metal transformer, hermetically sealed, flat pack, 0.630" x 0.630", 0.175" max height b-3820 dual epoxy transformer, flat pack, 0.625" x 0.625", 0.220" max height b-3229 single epoxy transformer, through-hole, 0.500" x 0.350", 0.250" max height b-3225 single epoxy transformer, through-hole, 0.625" x 0.625", 0.275" max height b-3067 single epoxy transformer, through-hole, 0.625" x 0.625", 0.220" max height b-3257 single epoxy transformer, surface mount, 0.625" x 0.625", 0.160" max height b-3227 single epoxy transformer, surface mount, 0.625" x 0.625", 0.275" max height b-3231 single epoxy transformer, flat pack, 0.625" x 0.625", 0.275" max height b-3226 single epoxy transformer, through-hole, 0.625 x 0.625, 0.250" max height bttc part no. transformer configuration single epoxy transformer, surface mount, 0.625" x 0.625", 0.220" max height single epoxy transformer, through-hole, 0.625 x 0.625, 0.220" max height. figure 3. bus coupling configurations tst-9117 dual epoxy transformer, twin stacked, surface mount, 0.625" x 0.625", 0.320" max height tst-9107 dual epoxy transformer, twin stacked, pc mount, 0.625" x 0.625", 0.280" max height tst-9027 lpb-5014 dual epoxy transformer, twin stacked, flat pack, 0.625" x 0.625", 0.280" max height tst-9127 dual epoxy transformer, twin stacked, flat pack, 0.625" x 0.625", 0.320" max height tst-9017 dual epoxy transformer, twin stacked, surface mount, 0.625" x 0.625", 0.280" max height tst-9007 dual epoxy transformer, twin stacked, 0.625" x 0.625", 0.280" max height lpb-5015 single epoxy transformer, surface mount, 0.625" x 0.625", 0.150" max height hlp-6015 single metal transformer, hermetically sealed, surface mount, 0.630" x 0.630", 0.175" max height single epoxy transformer, flat pack, 0.625" x 0.625", 0.150" max height
6 data device corporation www.ddc-web.com bu-63152 table 3. transmit operating mode tx data in tx data in tx inhibit driver output (2) x x h off (3) 0 0 x off 0 1 l on (4) 1 0 l on (4) 1 1 x off notes: (1) x = don ? t care (2) driver out = tx data out and tx data out . (3) driver output terminals are in the high impedance mode during off time, independent of inhibit status. (4) tx data in and tx data in must be switching (as shown in figure 2) and must not be set in a ? static ? i/o or o/i condition. bu-63152 rx data out rx data out ls04 data data ls04 to encoder/ decoder figure 4. smiths encoder/decoder compatibility (0.630 0.010) 16.00 0.25 (0.551 0.004) 14.00 0.10 2.00 +0.10 .25 max (0.010 max) .8 (0.031) basic 2.35 (0.093) max .35 0.05 (0.014 0.002) 0.60 +0.15 (0.024 +0.006 standoff .25 (0.010)max (0.093 max) 2.35 max -0.05 -0.004) 32 17 33 64 49 48 16 pin 1 (1) dimensions shown are in millimeters (inches) (2) foot length is measured at gage plane, 6.4 (0.25) above seating plane. bu-63152g3 -902 date code (note 2) notes: -0.10 10? 6? ?? .2 (0.008) rad. typ. 0.30 (0.012) rad. typ. 0.079 +0.004 -0.002 ( ) figure 5. bu-63152 outline drawing
7 data device corporation www.ddc-web.com bu-63152 pin function channel 1 gnd a 2 tx data out a 3 tx data out a 4 +5v a 5 +5v a 6 tx data out a 7 tx data out a 8 gnd b 9 factory test input * b 10 factory test input * b 11 gnd b 12 +5v b 13 +5v b 14 rx data out b 15 strobe b 16 rx data out b 17 factory test input * b 18 gnd b 19 +5v b 20 +5v b 21 +5v b 22 gnd b 23 gnd b 24 gnd b 25 rx data in b 26 rx data in b 27 factory test output * b 28 +5v b 29 +5v b 30 tx inhibit b 31 tx data in b 32 tx data in b table 4. bu-63152 pin functions pin function channel 33 gnd b 34 tx data out b 35 tx data out b 36 +5v b 37 +5v b 38 tx data out b 39 tx data out b 40 gnd a 41 factory test input * a 42 factory test input * a 43 gnd a 44 45 +5v +5v a a 46 rx data out a 47 strobe a 48 rx data out a 49 factory test input * a 50 gnd a 51 +5v a 52 +5v a 53 +5v a 54 gnd a 55 gnd a 56 gnd a 57 rx data in a 58 rx data in a 59 factory test output * a 60 +5v a 61 +5v a 62 tx inhibit a 63 tx data in a 64 tx data in a table 4. bu-63152 pin functions (cont.) * do not connect ; factory test points.
8 ordering information BU-63152G3-902 test criteria: 2 = mil-std-1760 amplitude compliant process requirements: 0 = standard ddc processing, no burn-in temperature grade/data requirements: 9 = -55 to +85?, ambient rise/fall times option: 3 = rise/fall times = 100 to 300 ns package type: g = quad gull lead package base product type: bu-63152 = dual +5v plastic qfp transceiver 105 wilbur place, bohemia, new york 11716-2482 for technical support - 1-800-ddc-5757 ext. 7234 headquarters - tel: (631) 567-5600, fax: (631) 567-7358 west coast - tel: (714) 895-9777, fax: (714) 895-4988 southeast - tel: (703) 450-7900, fax: (703) 450-6610 united kingdom - tel: +44-(0)1635-811140, fax: +44-(0)1635-32264 ireland - tel: +353-21-341065, fax: +353-21-341568 france - tel: +33-(0)1-41-16-3424, fax: +33-(0)1-41-16-3425 germany - tel: +49-(0)8141-349-087, fax: +49-(0)8141-349-089 japan - tel: +81-(0)3-3814-7688, fax: +81-(0)3-3814-7689 world wide web - http://www.ddc-web.com the information in this data sheet is believed to be accurate; however, no responsibility is assumed by data device corporation for its use, and no license or rights are granted by implication or otherwise in connection therewith. specifications are subject to change without notice. printed in the u.s.a. b - 05/01-250 data device corporation registered to iso 9001 file no. a5976 r e g i s t e r e d f i r m ? u
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