14 v 13 clock 12 data (b) 11 c 10 b 9+v 8 gnd 1 b out v1 n/c (see note * ) 2 sync 3 data (a) 4 c5 a6 -v 7 ref a out hi-3182psx-n, hi-3185psx-n the hi-3182, and hi-3185 bus interface products are silicon gate cmos devices designed as a line driver in accordance with the arinc 429 bus specifications. in addition to being func- tional upgrades of holt's hi-8382 product, they are also alternate sources for a variety of similar line driver products from other manufacturers. inputs are provided for clocking and synchronization. these signals are and'd with the data inputs to enhance system performance and allow the hi-318x series of products to be used in a variety of applications. both logic and synchronization inputs feature built-in 2,000v minimum esd input protection as well as ttl and cmos compatibility. the differential outputs of the hi-318x series of products are programmable to either the high speed or low speed arinc 429 output rise and fall time specifications through the use of two external capacitors. the output voltage swing is also adjustable by the application of an external voltage to the vref input. a 37.5 ohm resistor is in series with each arinc output. in addition the fuse in series with each output. the hi-318x series of line drivers are intended for use where logic signals must be converted to arinc 429 levels such as when using an asic, the hi-8584/hi-3282/hi-8282a arinc 429 serial transmitter/dual receiver, the hi-6010 arinc 429 transmitter/receiver or the hi-8783 arinc interface device. holt products are readily available for both industrial and military applications. please contact the holt sales department for additional information. hi-3182 product also has a pin configuration (top view) general description low power cmos ttl and cmos compatible inputs programmable output voltage swing operates at data rates up to 100 kbits overvoltage protection industrial and military temperature ranges adjustable arinc rise and fall times features hi-3185psx-n 14 - pin plastic small outline (soic) nb function arinc 429 differential line driver _ + truth table sync clock data(a) data(b) aout bout comments x l x x 0v 0v null l x x x 0v 0v null h h l l 0v 0v null h h l h -v +v low h h h l +v -v high h h h h 0v 0v null ref ref ref ref august 2006 arinc 429 differential line driver (see page 5 for hi-3182psx-n package pin configurations) note: * pin 2 is internally not connected (ds3182n rev. a ) 08/06 holt integrated circuits www.holtic.com
functional description the sync and clock inputs establish data synchronization utilizing two and gates, one for each data input (figure 2). each logic input is ttl/cmos compatible. figure 1 illustrates a typical arinc 429 bus application. three power supplies are necessary to operate the hi-318x; typically +15v, -15v and +5v. the chip also works with 12v supplies. the +5v supply can also provide a reference voltage that determines the output voltage swing. the differential output voltage swing will equal 2v . if a value of v other than +5v is needed, a separate +5v power supply is required for pin v . with the data (a) input at a logic high and data (b) input at a logic low, a will switch to the +v rail and b will switch to the -v rail (arinc high state). with both data input signals at a logic low state, the outputs will both switch to 0v (arinc null state). the driver output impedance, r , is nominally 75 ohms. the rise and fall times of the outputs can be calibrated through the selection of two external capacitor values th re connected to the c and c input pins. typical values for high-speed operation (100kbps) are c = c = 75pf and for low-speed operation (12.5 to 14kbps) c = c = 500pf. ref ref out ref out ref out 1 ab ab ab at a the c and c pins swing between +5v and ground allowing the switching of capacitor values with an external single- supply analog switch. ab the arinc outputs of the hi-3182, are protected by internal fuses capable of sinking between 800 - 900 ma for short periods of time (125 s). the vref pin has an internal pull-up resistor to v+, allowing the use of a simple external zener diode to set the reference voltage. power supply sequencing the power supplies should be controlled to prevent large currents during supply turn-on and turn-off. the recommended sequence is +v followed by v , always ensuring that +v is the most positive supply. the -v supply is not critical and can be asserted at any time. 1 hi-3182psx-n, hi-3185psx-n data (a) out data (b) inputs to arinc bus a out b ref v 1 v sync clock -v +v gnd b a c c -15v +15v +5v figure 1. arinc 429 bus application figure 2. functional block diagram out b c l ref f a r l f b out a output driver (b) output driver (a) b c gnd -v data (a) data (b) sync clock v 1 a c v +v level shifter and slope control (b) level shifter and slope control (a) current regulator 13 13 24.5 shorted on hi-3185psx-n 24.5 holt integrated circuits 2
symbol function description v analog ref. voltage used to determine output voltage swing. pin sources current to allow use of a zener reference. sync input synchronizes data inputs data (a) input data input terminal a c input connection for data (a) slew-rate capacitor a output arinc output terminal a -v power -12v to -15v gnd power 0.0v +v power +12v to +15v b output b c input data (b) input b clock input synchronizes data inputs v power +5v 5% ref a out out b 1 arinc output terminal connection for data (b) slew-rate capacitor data input terminal parameter symbol conditions operating range maximum unit differential voltage v voltage between +v and -v terminals 40 v supply voltage +v +10.8 to +16.5 v -v -10.8 to -16.5 v v +5 5% +7 v voltage reference v for arinc 429 +5 5% 6 v for applications other than arinc 1.5 to 6 6 v input voltage range v gnd -0.3 v v1 +0.3 v output short-circuit duration see note: 1 output overvoltage protection see note: 2 operating temperature range t high-temp & military -55 to +125 c industrial -40 to +85 c storage temperature range t ceramic & plastic -65 to +150 c lead temperature soldering, 10 seconds +275 c junction temperature t +175 c note 1. heatsinking may be required for continuous output short circuit at +125c and for 100kbps at +125c. note 2. the fuses used for output overvoltage protection may be blown by the presence of a voltage at either output that is greater than 12.0v with respect to gnd. (hi-3182 only) dif 1 ref in a stg j > < absolute maximum ratings all voltages referenced to gnd, ta = operating temperature range (unless otherwise specified) pin descriptions note: stresses above those listed under "absolute maximum ratings" may cause permanent damage to the device. these are stress ratings only. functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. hi-3182psx-n, hi-3185psx-n holt integrated circuits 3
parameter symbol condition min typ max units supply current +v (operating) (+v) no load (0 - 100kbps) +16 ma supply current -v (operating) (-v) no load (0 - 100kbps) -16 ma supply current (operating) ( ) no load (0 - 100kbps) 500 a reference pin current (operating) ( ) no load, ref = 5v (0 - 100kbps) -1.0 -0.4 -0.15 ma supply current +v (during short circuit test) (+v) short to ground (see note: 1) 150 ma supply current -v (during short circuit test) (-v) short to ground (see note: 1) -150 ma output short circuit current (output high) short to ground =0 (see note: 2) -80 ma output short circuit current (output low) short to ground =0 (see note: 2) +80 ma input current (input high) 1.0 a input current (input low) -1.0 a input voltage high 2.0 v input voltage low 0.5 v output voltage high (output to ground) no load (0 -100kbps) +v +v v -. +. output voltage low (output to ground) no load (0 -100kbps) -v -v v -. +. output voltage null no load (0-100kbps) -250 +250 mv input capacitance 15 pf i i viv vivv i i iv iv i i v v v v v c ccop ccop 1 ccop 1 ref ccop ref sc sc ohsc min olsc min ih il ih il oh 25 25 ol 25 25 null in see note 1 ref ref ref ref note 1. not tested, but characterized at initial device design and after major process and/or design change which affects this parameter. note 2. interchangeability of force and sense is acceptable. dc electrical characteristics ac electrical characteristics +v = +15v, -v = -15v, v = v = +5.0v, t = operating temperature range (unless otherwise specified). 1 ref a parameter symbol condition min typ max units rise time ( , ) = = 75pf see figure 3. 1.0 2.0 s fall time ( , ) = = 75pf see figure 3. 1.0 2.0 s propagtion delay input to output = = 75pf see figure 3. 3.0 s propagtion delay input to output = = 75pf see figure 3. 3.0 s ab t cc ab t cc tcc tcc out out r a b out out f a b plh a b phl a b figure 3. switching waveforms -9.5v to -10.5v +9.5v to +10.5v -4.75v to -5.25v 2.0v +4.75v to +5.25v 2.0v 0.5v 0.5v -4.75v to -5.25v +4.75v to +5.25v data (a) 0v data (b) 0v a out 0v b out 0v differential output 0v () ab out - out 50% 50% v ref adjust by c a t phl adjust by c a -v ref 50% 50% t plh t r +v ref -v ref adjust by c b adjust by c b t f 2v ref -2v ref high null low note: outputs unloaded +v = +15v, -v = -15v, v = v = +5.0v, t = operating temperature range (unless otherwise specified). 1 ref a hi-3182psx-n, hi-3185psx-n holt integrated circuits 4
additional pin configurations (see page 1 for 14-pin small outline soic) v-1 gnd (see note * ) - 2 sync - 3 data(a) - 4 c-5 a-6 -v - 7 gnd - 8 ref a out 16 - v 15 - n/c 14 - clock 13 - data(b) 12 - c 11 - b 10 - n/c 9-+v 1 b out hi-3182psx-n notes: * pin 2 may be left floating hi-3182psx-n, hi-3185psx-n 16 - pin plastic small outline (soic) ordering information legend: nb - narrow body wb - wide body 37.5 ohms yes 37.5 ohms no package description temperature range 16 pin plastic small outline - wb (soic) 14 pin plastic small outline - nb (soic) flow burn in -40c to +85c no i -55c to +125c no t hi - - n 318xps x x part number t i part number 3182ps 3185ps output series resistance fuse part number lead finish 100% matte tin (pb-free, rohs compliant) f tin / lead (sn / pb) solder blank holt integrated circuits 5
.0105 .0015 (.2667 .0381) .295 .004 (7.493 .102) 0 to 8 detail a detail a package type: 16hw .090 .010 (2.286 .254) .0025 .0015 (.0635 .0381) .033 .017 (.838 .432) .4065 .0125 (10.325 .318) .405 .008 (10.287 .203) .050 .010 (1.270 .254) .0165 .0035 (.4191 .0889) top view hi-3182psx-n 16-pin plastic small outline (soic) - wb (wide body) package type: 0 to 8 detail a 14h hi-3185psx-n 14-pin plastic small outline (soic) - nb (narrow body) .0069 .0029 (.175 .074) .033 .017 (.838 .432) package type: 14hn .050 .010 (1.270 .254) .236 .008 (6.00 .20) .0165 .0035 (.419 ..089) .3406 .0039 (8.651 .099) .00865 .00115 (.220 .029) detail a .1535 .0035 (3.899 .089) top view .061 .007 (1.549 .178) holt integrated circuits 6 hi-318xpsx-n package dimensions inches (millimeters)
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