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general description features august 2012 (ds4850 rev.b) applications holt integrated circuits www.holtic.com device selection table 14-pin soic 16-pin qfn 5.0 * for rs-485 transceivers optimized for data rates up to 20mbps please refer to the hi-4853 data sheet. part number half/full duplex data rate (mbps)* package HI-4850 hi-4851 hi-4852 half full full 5.0 5.0 8-pin soic 8-pin soic extended temperature range rs-485/422 networks process control and factory automation emi emission sensitive avionics industrial field bus networks networks requiring extended common-mode range the devices deliver at least 1.50v (vdd=3.0v), and 2.45v (vdd= 4.5v) output levels at an extended temperature range of -55c to +125c into a differential load of 54 ? and 50pf. slew rate control and pre-emphasis for superior emi extended power supply operating range 3.0v to 5.5v extended receiver common-mode range: -15.0v to 20.0v half-duplex 24v full-duplex esd protection 16kv hbm (bus pins) 8kv hbm (logic pins) 5 mbps date rate up to 100 ft. cat-5 utp 2 mbps data rate up to 1000 ft. cat-5 utp current limiting protection extended temperature range -55 c to 125 c industry standard 75176 pin-out 8-pin plastic soic package (narrow body) gnd - 4 ro - 2 vdd - 1 di - 3 5 - y 7 - b 8 - a 6 - z hi-4851psx di - 4 re - 2 ro - 1 de - 3 5 - gnd 7 - b 8 - vdd 6 - a HI-4850psx pin configurations (top views) 16- pin 4mm x 4mm chip-scale package hi-4852pcx vdd 6 5 4 3 ro 1 2 de 3 di 4 re - gnd gnd 7 - 5 6 8 12 a 11 b 10 z 9 y - - - hi-4852psx -1 ro 2 3 de 4 di 5 gnd 6 gnd 7 re 14 vdd 13 - 12 a 11 b 10 z 9 y 8 - 14-pin plastic soic package (narrow body) the receiver offers true fail-safe operation, providing a guaranteed logic high on ro when the bus is open-circuit, short- circuit, or idle (terminated but no t driven). the receiver?s worst case minimum input resist ance is at least 90k ? , supporting up to 224 nodes the hi-485x devices are slew-rated controlled tia-485/tia-422-b and iso 8482:1993 compliant transceivers with extended power- supply, temperature and receiver common-mode range for avionic and industrial control applications. the devices can operate over an extended supply (3.0v to 5.5v) and temperature (-55 ? c to 125 ? c) range. the receiver input common-mode range of [-15, 20]v, and 24v for the half and full duplex configurations respectively is valid over the full supply and temperat ure specification. the HI-4850 has a half-duplex configuration, and the hi-4851 and hi-4852 are full- duplex. slew rates are optimized for data rates below 5 mbps. the drivers slew-rate control and pre-emphasis reduces high-frequency components in the output signal transitions and also compensates for impedance mismatch. these features provide optimum emi and jitter performance, essential in emi sensitive environments and high-integrity data link applications such as in aerospace and industrial controls. 08/12
HI-4850 signal pin descriptions tx function table holt integrated circuits 2 function description ro re __ de di gnd a, y b, z vdd output input analog i/o power analog i/o power input input receiver enable. re = low enables the receiver. re high forces the receiver output (ro) into a high impedance state. internal 450k ? pull-up resistor __ __ driver enable. de = high enables the driver. de = low will force the driver output into a high impedance state and the device will function as a line receiver if re is also low. internal 450k ? pull-up resistor __ driver input. forces the logic state of the driver?s output, if driver is enabled. internal 450k ? pull-up resistor chip ground, 0v supply positive supply: 3.0v vdd 5.5v non-inverting receiver input / driver output. inverting receiver input / driver output. hi-z x transmitting re line condition inputs outputs b a 0 1 de di x x 0 1 0 0 1 1 0 transmit logic high transmit logic low disable shutdown 1 1 0 x x hi-z hi-z hi-z hi-z bus pins v id = v a -v b receiving de re __ inputs output ro operation 0 0 0 x 0 x 0 0 0 0 1 1 10 x hi-z 1 1 1 0 x -150mv < v id < -50mv -50mv v id v id -150mv open or shorted idle and terminated undefined input receiver logic high receiver logic low default disabled shutdown default typical operating circuit vdd gnd ro di gnd y di ro vdd a b y z b a rx tx r t r t z r t r t hi-4851 figure 2 - typical full- duplex 8-pin configuration rx tx hi-4851 ro ro re de di vdd re de di vdd b a gnd b a gnd rx tx tx rx r t r t ab ba HI-4850 HI-4850 HI-4850 HI-4850 short unterminated stubs figure 1 - typical half-duplex configuration receiver output. i f v id -50mv, then ro is high. if v id < -150mv then ro is low. if the bus is shorted, open or terminated but not driven by another terminal, ro will be high. rx function table
specified operating conditions note: stresses above those listed under "absolute ma ximum ratings" may cause permanent damage to the device. these are stress rating s only. functional operation of the device at these or any other conditions above those indica ted in the operational sections of the sp ecifications is not implied. exposure to absolute maximum rating conditions for extended periods may a ffect device reliability. absolute maximum ratings (voltages referenced to gnd = 0v) HI-4850 storage temperature range: .........................................-65c to +150c soldering temperature: (ceramic)......................60 sec. at +300c (plastic - leads).............10 sec. at +280c (plastic - body)......................+260c max. (hi-temp)........................-55c to +125c internal power dissipation:..............................................................900mw operating temperature range:(industrial).........................-40c to +85c supply voltage, vdd:...............................................................................7 v control input currents: control input voltages:..................................................-0.5v to vdd + 0.5v digital output voltage (ro):............................................... ...................................................-100ma to 100ma -0.5v to vdd + 0.5v bus voltage (ay, bz):............................................................................25v -0.5v to v + 0.5v short-circuit duration, driver (v: 15v)..................................................... esd (human body model): ay, bz,vdd,gnd pins:.......................................................16kv di, de, re, ro pins:.............................................................8kv digital input voltages (di, de, re):................................. __ __ supply voltage temperature tx common-mode bus loading differential load resistance differential load capacitance digital input high voltage digital input low voltage digital input current high digital input pull-down current digital input current low digital input pull-up current v dd limits symbol min typ max unit conditions parameters t v ocm v icm r l c l v ih v il i ih i pd i il i pu rx input common-mode voltage see figure 4 de, di, re __ de, di, re __ de, di, v ih = v dd re, v ih = v dd __ re, v ih = 0 __ de, di, v ih = 0v -55 -7 12 125 5.5 3.3 / 5.0 54 -16 20 60 100 70 30 1 13 -6 -13 -1 6 v ? c v a a a a %v dd %v dd pf ? v driver dc electrical characteristics vdd = 3.0v to 3.6v or 4.5v to 5.5v; t = -55 ? c to 125 ? c; min and max values are at range boundaries holt integrated circuits 3 differential output voltage with no load differential output voltage into load with no common-mode voltage differential output voltage into load with applied common-mode voltage change in differential output voltage between logic states differential output over/under shoot output common-mode voltage change in output common-mode voltage between logic states bus pin leakage current (high-z power on) bus pin leakage current (power off) peak short circuit current steady state short circuit current differential output capacitance static supply current supply current (shutdown) |v od1 | |v od2 | |v od3 | ? v ocm i ohz1 i ohz2 i scpk i sc c od i dd i ddq v ocm ? v od r l = r l = 54 ? , c l = 50pf -7v v ocm 12v t a = 25 oc r l = 54 ? , c l = 50pf r l = 54 ? , c l = 50pf r l = 54 ? , c l = 50pf de=0, -15v vocm 15v de=0, -12v vocm 15v v ocm = 15v de = v dd , bus pin = 15 de = v dd , bus pin = 15 de = 0 de=v dd , re=0, r l = de=0, re=v dd , r l = 3 3 4 3 4 4 min typ max min typ max vdd = 5.0v 10% unit parameter symbol figure conditions v dd -0.1 1.5 1.5 3.0 3.0 v dd v dd -0.1 2.45 2.45 4.0 4.0 v dd v v v %v od 3.2 125 -125 mv v 3.0 2.45 2.15 2.0 1.40 1.60 -125 125 5.5 -125 125 -150 150 mv -200 200 a -200 200 a -200 200 -200 200 -230 -250 250 230 ma 0 50 0 50 a a ma pf 16 12 400 100 10 10 16 110 90 8 3.0 vdd = 3.3v 10% half-duplex
HI-4850 driver switching characteristics vdd = 3.0v - 3.6v or 4.5v - 5.5v as noted , operating temperature range. vdd = 3.3v 10% vdd = 5.0v parameter conditions figure unit symbol propagation delay low - to - high t 5 & 6 110 145 200 propagation delay high - to - low differential rise time differential fall time 90 105 120 115 135 125 ns min typ max min typ max pdr t r c =50pf 5 & 6 110 145 200 108 150 205 ns t r c =50pf 5 & 6 90 105 120 115 135 155 ns trc=50pf5 & 6 output pulse skew t r c =50pf 5 & 6 2 8 2 8 ns driver enable to output high t r c =50pf 7 95 120 90 117 ns driver enable to output low t r c =50pf 7 95 120 90 117 ns driver disable from output high t r c =50pf 7 20 33 18 30 ns driver disable from output low t r c =50pf 7 20 33 18 30 ns shutdown to active output delay t r c =50pf 7 10 10 s shutdown delay t 8 10 10 s pdf l r l f l msk l zh l zl l hz l lz l on l off l = , l = , l = , l = , l = , l = , l = , l = , l = , 54 54 54 54 500 500 500 500 500 ? ? ? ? ? ? ? ? ? 10% r c =50pf 108 150 205 ns l = 54 . ? l receiver dc electrical characteristics vdd = 3.0v - 3.6v or 4.5v - 5.5v as noted , operating temperature range. vdd = 3.3v 10% vdd = 5.0v parameter conditions figure unit symbol differential input threshold voltage v -15v -200 -100 -50 mv input hysteresis v input resistance r ro output high level v v = +200mv 90% 90% v ro output low level v ro output hi-z leakage current i 0 min typ max min typ max th -12v v +15v v = 0v 20 25 30 20 25 30 mv v -20v v +15v 80 92 k -12v v +15v 80 92 k i = -5.0ma v = -200mv 10% 10% v i = 5.0ma v v v -1 1 -1 1 a ? ? ? ? icm icm dd icm icm out id dd out ro dd hys in oh id dd ol ozh ? ? 10% ? v +15v -200 -100 -50 mv icm receiver switching characteristics vdd = 3.0v - 3.6v or 4.5v - 5.5v as noted , operating temperature range. vdd = 3.3v 10% vdd = 5.0v parameter conditions figure unit symbol propagation delay low - to - high t 9 20 26 32 propagation delay high - to - low ro output rise time ro output fall time 9 1.1 1.9 3.3 1.1 1.9 3.3 ns min typ max min typ max rpdr t v -1.5v c =15pf 9 20 26 32 20 26 32 ns t v +1.5v, c =15pf 9 1.1 1.9 3.3 1.1 1.9 3.3 ns tv-1.5vc=15pf output pulse skew t v +1.5v, c =15pf 9 0.8 1.6 0.8 1.6 ns receiver enable to ro output high t r = 1k c =15pf 7 12 16 12 16 ns receiver enable to output low t r = 1k c =15pf 7 12 16 12 16 ns receiver disable from output high t r = 1k c =15pf 7 6 10 6 10 ns receiver disable from output low t r = 1k c =15pf 7 6 10 6 10 ns shutdown to ro active output delay t r = 1k c =15pf 7 5 5 s shutdown delay to ro hiz t r = 1k c =15pf 7 60 100 60 100 ns rpdf l rr l rf l rmsk l rzh l rzl l rhz l rlz l ron l roff l id = , id = id = , id = l , l , l, l , l , l , ? ? ? ? ? ? 10% v +1.5v, c =15pf 20 26 32 ns id = l holt integrated circuits 4 holt integrated circuits 4 8 8 8 8 8 9 9 9 9 9 9 17 28 33 17 28 33 -15 v icm +20 -15 v icm +20 v icm = +200mv i out = -3.0ma v icm = -200mv i out = +3.0ma
HI-4850 test circuits 54 ? 50pf di bz ay tx figure 3 - driver dc characteristics ( v od1 , v od2 , and ? v od ) de |v od | + - 50pf di bz ay tx figure 4 - driver dc characteristics wi th and without common-mode loading ( v ocm , v od3 , and ? v od ) de |v od3 | + - 27 ? 27 ? vocm v ocm di bz ay tx de |v od3 | + - 27 ? 27 ? 60 ? holt integrated circuits 5 figure 6. driver switching waveforms di v = v(ay) - v(bz) od bz ay v dd 0v 0v v o -v o v o 1/2v o 1.5v 1.5v t pdr t pdf 1/2v o t msk t msk t r t f 90% 90% 10% 10% 50pf di bz ay tx de 54 ? figure 5 - driver switching characteristics (t pdr , t pdf , t r and t f ) 1mpbs
holt integrated circuits 6 HI-4850 de di tx ay bz 50pf ???? 1mhz gnd / v dd 50pf ???? gnd / v dd v/ gnd dd figure 8. driver enable / disable switching de ay, bz v dd 0v 50% 50% t zl t lz ay, bz t zh v/2 dd v/2 dd 0v v dd v ol v oh t hz 0.5v 0.5v output normally low output normally high re ay rx ro 15pf 1mbps bz ay - bz ro t phl figure 9. receiver propagation delays v oh v ol vdd/2 0v t plh vdd/2 0v v od2 -v od2 input output re ay rx ro 15pf 1mhz bz +200 mv / -200 mv ??? v/ gnd dd figure 10. receiver enable and disable times re ro 3v 0v 1.5v 1.5v t zl t lz t zh 2.5v 2.5v 0v 5v v ol v oh t hz 0.5v 0.5v output normally low output normally high ro figure 9. figure 8. figure 7.
HI-4850 performance characterisitics over supply an d temperature holt integrated circuits 7 40 41 42 43 44 45 46 -20 -15 -10 -5 0 5 10 15 20 rx prop delay vs. input common-mode propagation delay (ns) input common-mode voltage (v) 4850-4852 v dd = 3.0v c l = 15pf f data = 1mbps t a = 27 oc 28 30 32 34 36 38 40 42 44 46 48 -55 -30 -5 20 45 70 95 120 temperature ( o c) propagation delay (ns) v dd = 3.0v rx propagation delay vs. temperature 4850-4852 v dd : [3.0, 5.5]v c l = 15p f data = 1mbps v dd = 5.5v 136 146 156 166 176 186 196 206 -55 -30 -5 20 45 70 95 120 vdd = 5.5v vdd = 3.0v 4850-4852 v dd = [3.0, 5.5]v c l = 100pf, r l = 54 ? t bit = 1.0us temperature ( o c) propagation delay (ns) tx propagation delay vs. temperature 1.57 1.77 1.97 2.17 2.37 2.57 2.77 2.97 3.17 3.37 3.57 -55 -30 -5 20 45 70 95 120 vdd = 5.5v vdd = 3.0v 4850-4852 v dd = [3.0, 5.5]v c l = 100pf, r l = 54 ? t bit = 1.0us tx output amplitude (v) tx differential zero to peak amplitude vs. temperature temperature ( o c) 103 108 113 118 123 128 133 138 -55 -30 -5 20 45 70 95 120 vdd = 5.5v vdd = 3.0v temperature ( o c) tx rise/fall time vs. temperature tx rise/fall time (ns) 4850-4852 v dd = [3.0, 5.5]v c l = 100pf, r l = 54 ? t bit = 1.0us HI-4850/52
HI-4850 full duplex receiver typical performance characteristics holt integrated circuits 8 ro a b v dd = 3.0v t bit = 1.0us t a = 27oc input common-mode = +23v rx extended common-mode range: minimum supply, maximum common-mode ro a b v dd = 3.0v t bit = 1.0us t a =27oc input common-mode = -23v rx extended common-mode range: minimum supply, minimum common-mode ro di a b cable delay 1mbps over 1000ft. cat-5a utp v dd = 3.0v t bit = 1.0us t a =27oc 1mbps data pulse over 1000ft cat-5 utp ro di a b cable delay 2mbps over 1000ft. cat-5a utp v dd = 3.0v t bit = 0.5us t a =27oc 2mbps data pulse over 1000ft cat-5 utp rx extended common-mode range: maximum supply, minimum common-mode a b ro input common-mode = -24v v dd = 5.5v t bit = 0.5us t a = 27oc rx extended common-mode range: maximum supply, maximum input-cm ro a b v dd = 5.5v t bit = 0.5us t a =27oc input common-mode = +24v 5v/div 2v/div hi-4851/52
35 40 45 50 55 60 65 70 75 -55 -35 -15 5 25 45 65 85 105 125 supply current (ma) temperature ( o c) supply current vs. temperature v dd = 5.0v v dd = 3.3v t bit = 1.0us, 50% duty cycle c l = 50pf r l = 54 ? t a =27oc HI-4850 holt integrated circuits 9 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0.1 0.6 1.1 1.6 2.1 2.6 v cm = +22.0v v cm = -22.0v input signal amplitude (v) rx output jitter (ui) rx output jitter vs. input common-mode and swing v dd = 3.0v c l = 15pf t bit = 1.0us t a =27oc v cm = +22v v cm = -22v 0.01 0.06 0.11 0.16 0.21 0.26 0.1 0.6 1.1 1.6 2.1 2.6 v cm = +24.0v v cm = 0.0v v cm = -24.0v input signal amplitude (v) rx output jitter (ui) rx output jitter vs. input common-mode and swing v dd = 4.5v c l = 15pf t bit = 1.0us t a = 27oc v cm = +24v v cm = 0.0v v cm = -24v jitter: 0.05ui = 50ns pk-pk 5% duty error in ro typical tranceiver perf ormance characterisitics typical tx rise/fall time max load @ 3.3v, 27 oc di a b f data = 2mbps pre-emphasis & sr ctrl typical tx/rx propagation delay @ 3.3v, 27 oc di a b ro f data = 115kbps hi-4851/52 hi-4851/52 HI-4850/52 HI-4850/52 HI-4850/52
ta = 27oc driver is open ckt tx slew-rate controlled output characteristics: vdd = 3.3v, f data = 1mbps, c l = 50pf, r l = 54 ? a b ta = 27oc a - b di tx low speed output characteristics: vdd = 3.3v, f data = 115kbps, c l = 50pf, r l = 54 ? a b di a - b ta = 27oc tx high speed output characteristics: vdd = 3.3v, f data = 2mbps, c l = 50pf, r l = 54 ? di a b a - b ta = 27oc ro a b di tx / rx propagation delay: vdd = 3.3v, f data = 1mbps, c l = 50pf, r l = 54 ? ta = 27oc 500 ns div ro a b di tx / rx propagation delay: vdd = 3.3v, f data = 2mbps, c l = 50pf, r l = 54 ? ta = 27oc 500 ns div HI-4850 typical performance characterisitics a b di tx slew-rate controlled output characteristics: vdd = 3.3v, f data = 1mbps, c l < 1pf, r l = a - b holt integrated circuits 10 HI-4850/52
HI-4850 ordering information hi - 485x xx x x temperature range flow burn in -40c to +85c -55c to +125c no yes i m -55c to +125c no t part number t i m package description 16 pin plastic 4 x 4 mm chip scale (16pcs) (hi-4852 only. no m-flow) part number pc 8 pin plastic narrow body soic (8hn) (HI-4850, hi-4851) 8 pin cerdip (8d) not available pb-free (HI-4850, hi-4851) ps ps lead finish part number 100% matte tin (pb-free, rohs compliant) f tin / lead (sn / pb) solder blank cr 14 pin plastic narrow body soic (14hn) (hi-4852 only) function half duplex transceiver part number 4850 full duplex tranceiver always enabled 4851 4852 full duplex transceiver with enable pins holt integrated circuits 11
HI-4850 revision date description of change ds4850, rev new 10/12/2011 initial release rev. a 3/15/2012 added characterization data. fixed errors in v il and v ih values. revision history holt integrated circuits 12 rev. b 8/2/2012 updated rx function table rows 2 and 3 on p. 2 for de = x. updated package drawings for soic-8 (8 hn), qfn-16 (16pcs) and soic-14 (14hn) packages.
HI-4850 package dimensions holt integrated circuits 13 8-pin plastic small outline (soic) - nb (narrow body) inches (millimeters) package type: 8hn bsc = ?basic spacing between centers? is theoretical true position dimension and has no tolerance. ( jedec standard 95) see detail a 0 ? to 8 ? detail a in p 1 .236 (6.00) .154 (3.90) .193 (4.90) .007 .003 (.175 .075) .050 (1.27) .033 .017 (.835 .435) .056 .006 (1.413 .163) .007 .003 (.175 .075) .016 .004 (.410 .100) bsc .050 (1.27) bsc bsc bsc 16-pin plastic chip-scale package inches (millimeters) package type: 16pcs bsc = ?basic spacing between centers? is theoretical true position dimension and has no tolerance. ( jedec standard 95) top view bottom view electrically isolated heat sink pad on bottom of package connect to any ground or power plane for optimum thermal di ssi pati on . . .157 (4.000) bsc .157 (4.000) bsc .039 (1.000) max. .008 (.200) typ. .016 .002 (.400 .050) .102 .002 (2.600 .050) .026 (.650) bsc .012 .002 (.300 .050) .102 .002 (2.600 .050)
HI-4850 package dimensions 9 holt integrated circuits 14 8-pin cerdip inches (millimeters) package type: 8d bsc = ?basic spacing between centers? is theoretical true position dimension and has no tolerance. ( jedec standard 95) .380 .004 (9.652 .102) .005 min (.127 min) .314 .003 (7.976 .076) .200 max (5.080 max) .248 .003 (6.299 .076) .039 .006 (.991 .154) .163 .037 (4.140 .940) .018 .006 (.457 .152) .056 .006 (1.422 .152) .015 min (.381min) .350 .030 (8.890 .762) .010 .006 (.254 .152) base plane seating plane .100 bsc (2.54) 14-pin plastic small outline (soic) - nb (narrow body) inches (millimeters) package type: 14hn bsc = ?basic spacing between centers? is theoretical true position dimension and has no tolerance. ( jedec standard 95) 0 ? to 8 ? detail a .007 .003 (.175 .075) .033 .017 (.835 .435) ?? .016 .004 (.410 .100) .341 (8.65) .007 .003 (.175 .075) see detail a top view .069 (1.750) .050 (1.27) bsc .236 (5.99) bsc bsc .154 (3.90) bsc max.

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