hi-1569 mil-std-1553 / 1760 5v monolithic dual transceiver description features the hi-1569 is a low power cmos dual transceiver designed to meet the requirements of mil-std-1553 /1760 specifications. the transmitter section of each channel takes complementary cmos / ttl digital input data and converts it to bi-phase manchester encoded 1553 signals suitable for driving the bus isolation transformer. separate transmitter inhibit control signals are provided for each transmitter. the receiver section of each channel converts the 1553 bus bi-phase data to complementary cmos / ttl data suitable for inputting to a manchester decoder. each receiver has a separate enable input which can be used to force the output of the receiver to a logic 0. the transmitter outputs and receiver inputs for each channel are brought out to separate sets of pins. for typical mil-std-1553 applications the transmitter output and receiver input will be tied together at the isolation transformer. compliant to mil-std-1553a & b, mil-std-1760, arinc 708a cmos technology for low standby power single 5v power supply less than 1.0w maximum power dissipation military processing options industry standard 64-pin pqfp package august 2006 (ds1569 rev. c) 08/06 holt integrated circuits www.holtic.com pin configuration (top view) 64 - pin plastic quad flat pack (pqfp) hi-1569 64 - 63 - txa 62 - txinha 61 - vdd a 60 - vdd a 59 - n/c 58 - in 57 - busa in 56 - n/c 55 - gnd a 54 - n/c 53 - vdd a 52 - vdd a 51 - n/c 50 - gnd a 49 - n/c txa busa 48 - 47 - rxena 46 - rxa 45 - n/c 44 - vdd a 43 - n/c 42 - n/c 41 - n/c 40 - gnd a 39 - out 38 - out 37 - vdd b 36 - vdd b 35 - busb out 34 - busb out 33 - gnd b rxa busb busb n/c-17 gndb-18 n/c-19 vddb-20 vddb-21 n/c-22 gndb-23 n/c-24 busb in - 25 in-26 n/c-27 vddb-28 vddb-29 txinhb - 30 txb-31 -32 busb txb gnd a - 1 busa out - 2 busa out - 3 vdd a - 4 vdd a - 5 out - 6 out - 7 gndb- 8 n/c - 9 n/c-10 n/c-11 vddb-12 n/c-13 rxb-14 rxenb - 15 -16 busa busa rxb
pin descriptions pin symbol function description 1, 40, 50, 55 gnda power supply ground for channel a (connect all pins) 2, 3 busa out analog output mil-std-1533 bus driver a, positive signal 4, 5, 44, 52, 53, 60, 61 vdda power supply +5 volt power for channel a (connect all pins) 6, 7 out analog output 8, 18, 23, 33 gndb power supply ground for channel b (connect all pins) 12, 20, 21, 28, 29, 36, 37 vddb 14 16 25 busb in analog input 26 30 31 32 34, 35 busb out 38, 39 busa mil-std-1533 bus driver a, negative signal power supply +5 volt power for channel b (connect all pins) rxb digital output receiver b output, non-inverted 15 rxenb digital input receiver b enable. if low, forces rxb and low digital output receiver b output, inverted mil-std-1553 bus receiver b, positive signal in analog input mil-std-1553 bus receiver b, negative signal txinhb digital input transmit inhibit, channel b. if high busb out, out disabled txb digital input transmitter b digital data input, non-inverted digital input transmitter b digital data input, inverted analog output mil-std-1533 bus driver b, positive signal out analog output mil-std-1533 bus driver b, negative signal 46 rxa digital output receiver a output, non-inverted 47 rxena digital input receiver b enable. if low, forces rxb and low 48 digital output receiver b output, inverted 57 busa in analog input mil-std-1553 bus receiver a, positive signal 58 in analog input mil-std-1553 bus receiver a, negative signal 62 txinha digital input transmit inhibit, channel a. if high busa out, out disabled 63 txa digital input transmitter a digital data input, non-inverted 64 digital input transmitter a digital data input, inverted 9 -11, 13, 17,19, 22, 24, 27 n/c - not connected. may be left open or connected to power or ground 41 - 43, 45, 49, 51, 54, 56, 59 rxb rxb busb busb txb busb rxb rxa busa busa txa hi-1569 holt integrated circuits 2 the hi-1569 data bus transceiver contains differential volt- age source drivers and differential receivers. it is intended for applications using a mil-std-1553 a/b data bus. the device produces a trapezoidal output waveform during transmission. data input to the device?s transmitter section is from the complementary cmos /ttl inputs txa/b and / . the transmitter accepts manchester ii bi-phase data and converts it to differential voltages on the transceiver outputs are either direct or transformer coupled to the mil-std-1553 data bus. both coupling methods produce a nominal voltage on the bus of 7.5 volts peak to peak. transmitter txa b busa/b out and / the transmitter is automatically inhibited and placed in the high impedance state when both txa/b and / are ei- ther at a logic ?1? or logic ?0? simultaneously. a logic ?1? ap- plied to the txinha/b input will force the transmitter to the high impedance state, regardless of the state of txa/b and / busa b out. txa b txa b. receiver the receiver accepts bi-phase differential data from the mil- std-1553 bus through a direct or transformer coupled inter- face. the receiver?s differential input stage drives a filter and threshold comparator that produces cmos/ttl data at the rxa/b and / output pins. rxa b each set of receiver outputs can be independently forced to a logic "0" by setting rxena or rxenb low. a direct coupled interface (see figure 2) uses a 1:2.5 ratio isolation transformer and two 55 ohm isolation resistors between the transformer and the bus. in a transformer coupled interface (see figure 3), the transceiver is connected to a 1:1.79 isolation transformer which in turn is connected to a 1:1.4 coupling transformer. the transformer coupled method also requires two coupling resistors equal to 75% of the bus characteristic impedence (zo) between the coupling transformer and the bus. mil-std-1553 bus interface functional description
transmit waveform - example pattern txa/b txa b / busa/b out - / out busa b receive waveforms - example pattern rxa/b rxa b / vin (line to line) figure 1. block diagram txa/b txa b / txinha/b rxa/b rxa b / rxena/b each channel transmit logic receive logic slope control comparator input filter busa/b out busa/b out transmitter receiver data bus isolation transformer coupler network direct or transformer hi-1569 holt integrated circuits 3 busa/b in busa/b in
parameter symbol condition min typ max units operating voltage vdd 4.75 5 5.25 v total supply current icc1 not transmitting 14 22 ma icc2 transmit one channel @ 340 ma 50% duty cycle icc3 transmit one channel @ 550 ma 100% duty cycle power dissipation pd1 not transmitting 0.11 w pd2 transmit one channel @ 0.70 0.95 w 100% duty cycle min. input voltage (hi) v digital inputs 2.0 1.4 v max. input voltage (lo) v digital inputs 1.4 0.8 v min. input current (hi) i v = 4.9v, digital inputs 20 a max. input current (lo) i v = 0.1v, digital inputs -20 a min. output voltage (hi) v i = -4ma, digital outputs 4.0 v max. output voltage (lo) v i = 4.0ma, digital outputs 0.4 v input resistance r differential 20 kohm input capacitance c differential 5 pf common mode rejection ratio cmrr 40 db input level v differential 9 vp-p input common mode voltage v -5.0 5.0 v-pk threshold voltage - direct-coupled detect 1.15 20.0 no detect 0.28 theshold voltage - detect 0.86 14.0 no detect 0.20 200 400 v 1 mhz sine wave vp-p v (measured at point ?a ? in figure 2) vp-p transformer-coupled v 1 mhz sine wave vp-p v (measured at point ?a ? in figure 3) vp-p = ih il ih ih il il oh out ih out d receiver (measured at point ?a ? in figure 2 unless otherwise specified) in in in icm thd thnd thd thnd d t note: stresses above absolute maximum ratings or outside recommended operating conditions may cause permanent damage to the device. these are stress ratings only. operation at the limits is not recommended. supply voltage ( logic input voltage range power dissipation at 25c 1.0 w solder temperature 275c for 10 sec. junction temperature 175c storage temperature -65c to +150c vdd) -0.3 v to +7 v -0.3 v dc to +5.5 v receiver differential voltage 10 vp-p driver peak output current +1.0 a absolute maximum ratings recommended operating conditions supply voltage temperature range industrial screening.........-40c to +85c hi-temp screening........-55c to +125c military screening..........-55c to +125c vdd....................................... 5v... 5% dc electrical characteristics vdd = 5.0v, gnd = 0v, t = operating temperature range (unless otherwise specified). a hi-1569 holt integrated circuits 4
parameter symbol condition min typ max units output voltage direct coupled 35 ohm load 6.0 9.0 vp-p (measured at point ?a ? in figure 2) 70 20.0 27.0 vp-p output noise v differential, inhibited 10.0 mvp-p output dynamic offset voltage v -90 90 mv -250 250 mv output resistance r differential, not transmitting 10 kohm output capacitance c 1 mhz sine wave 15 pf transmitter (measured at point ?a ? in figure 2 unless otherwise specified) d d v transformer coupled v ohm load (measured at point ?a ? in figure 3) direct coupled 35 ohm load (measured at point ?a ? in figure 2) transformer coupled v 70 ohm load (measured at point ?a ? in figure 3) out out dyn t d t on dyn out out parameter symbol test conditions min typ max units receiver enable delay tren from rxena/b rising or falling edge to 40 ns rxa/b or driver delay tdt txa/b, txa/b to busa/b out, out 150 ns rise time tr 35 ohm load 100 300 ns fall time tf 35 ohm load 100 300 ns inhibit delay tdi-h inhibited output 100 ns tdi-l active output 150 ns receiver transmitter (measured at point ?a ? in figure 2) (measured at point ?a ? in figure 2) d d receiver delay tdr from input zero crossing to rxa/b or 450 ns rxa/b rxa/b busa/b dc electrical characteristics (cont.) vdd = 5.0v, gnd = 0v, t = operating temperature range (unless otherwise specified). a ac electrical characteristics vdd = 5.0v, gnd = 0v, t =operating temperature range (unless otherwise specified). a txa/b txa/b txinha/b transmitter receiver 1:2.5 point ?a ? d 55 55 35 2.5:1 55 55 35 rxena/b busa/b out busa/b out rxa/b rxa/b figure 2. direct coupled test circuits hi-1569 isolation transformer isolation transformer point ?a ? d holt integrated circuits 5
txa/b txa/b txinha/b transmitter busa/b out busa/b out 52.5 (.75 zo) 52.5 (.75 zo) 1.79:1 1:1.79 1:1.4 1.4:1 35 (.5 zo) figure 3. transformer coupled test circuits hi-1569 coupling transformer coupling transformer isolation transformer isolation transformer receiver 52.5 (.75 zo) 52.5 (.75 zo) 35 (.5 zo) rxa/b rxa/b rxena/b point ?a ? t point ?a ? t holt integrated circuits 6 ordering information hi - (plastic) 1569pq x x 64 pin plastic pqfp lead finish part number 100% matte tin (pb-free, rohs compliant) f blank rxenb = 0 part number 1567pq rxa rxa rxb 0000 rxb rxena = 0 tin / lead (sn / pb) solder temperature range flow burn in -40c to +85c no i -55c to +125c no t part number t i -55c to +125c yes m m package description
thermal characteristics part number package condition ? junction temperature description t =25c t =85c t =125c ja aaa hi-1569pqi hi-1569pqt 64 pin plastic socketed 46.3c/w 58c 118c 157c hi-1569pqm pqfp data taken at vdd=5.0v, continuous transmission at 1mbit/s, single transmitter enabled. circuit design considerations holt's application note an-500 contains useful information regarding circuit design and layout when using mil-std- 1553 transceivers. recommended transformers the hi-1569 transceiver has been characterized for compliance with the electrical requirements of mil-std- 1553 when used with the following transformers. holt recommends the premier magnetics parts as offering the best combination of electrical performance, low cost and small footprint. manufacturer part number application turns ratio(s) dimensions technotrol tl1553-45 isolation dual tapped 1:1.79, 1:2.5 .630 x 630 x .155 inches premier magnetics pm-db2725ex isolation dual tapped 1:1.79, 1:2.5 .500 x .500 x .375 inches technotrol tq1553-2 stub coupling 1:1.4 .625 x .625 x .250 inches premier magnetics pm-db2702 stub coupling 1:1.4 .625 x .500 x .250 inches hi-1569 holt integrated circuits 7
package dimensions inches (millimeters) holt integrated circuits 7 package type: 0 7 d etail a see detail a .055 .002 (1.40 .05) .063 max. (1.60 max ) .008 r typ (0.2 r typ) .014 .002 (.35 .05) .031 bsc (0.8 bsc) .012 r typ (.300 r typ ) .024 .006 (.60 .15) .040 .006 (1.0 .150) typ. .551 .004 (14.00 .10) sq. .630 .010 (16.00 .25) sq. 64pqs 64-pin plastic quad flat pack (pqfp) holt integrated circuits 8
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