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general description features august 2012 (ds4853 rev. b) high-speed 3.0v to 5.5v,slew- rate controlled rs-485/422 transceivers with ex tended common-mode range applications holt integrated circuits www.holtic.com device selection table 14-pin soic 16-pin qfn 20.0 * for rs-485 transceivers optimized for data rates up to 5mbps please refer to the hi-4850 data sheet. part number half/full duplex data rate (mbps)* package HI-4853 hi-4854 hi-4855 half full full 20.0 20.0 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) 20 mbps data rate up to 100 ft. cat-5 utp 12 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-4854psx di - 4 re - 2 ro - 1 de - 3 5 - gnd 7 - b 8 - vdd 6 - a HI-4853psx pin configurations (top views) 16- pin 4mm x 4mm chip-scale package hi-4855pcx 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-4855psx -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 high-speed slew-rated controlled tia-485/ tia-422-b and iso 8482:1993 compliant transceivers with extended 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 temperature specific ation. the HI-4853 has a half- duplex configuration, and the hi-4854 and hi-4855 are full-duplex. slew rates are optimized for data rates below 25mbps. 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 miniature munitions stores interface (mmsi / ebr-1553)
HI-4853 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-4854 figure 2 - typical full- duplex 8-pin configuration rx tx hi-4854 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-4853 HI-4853 HI-4853 HI-4853 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-4853 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 30 70 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 12 400 125 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-4853 17 33 30 16 26 24 9 15 16 8 12 11 9 15 16 8 12 11 17 33 30 16 26 24
HI-4853 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 12mbps
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-4853 12mbps 12mbps 12mbps
rx extended common-mode range: minimum supply, ma ximum (-) common-mode ro a b input cm = -16v v dd = 3.0v t bit = 100ns t a = 27 ? c a-b rx extended common-mode range: minimum supply, maxi mum (+) common-mode v dd = 3.0v t bit = 100ns t a = 27 ? c input cm = +22v ro a b a-b v dd = 5.5v t bit = 50ns t a = 27 ? c input cm = -15v ro a b a-b rx extended common-mode range: maximum supply, ma ximum (-) common-mode rx extended common-mode range: typical supply, maxi mum (+) common-mode v dd = 5.0v t bit = 50ns t a = 27 ? c input cm = +21v ro a b a-b 20mbps rx extended common-mode range: typical supply, ma ximum (-) common-mode v dd = 3.3v t bit = 50ns t a = 27 ? c input cm = -16v ro a b a-b 20mbps HI-4853 holt integrated circuits 7 v dd = 5.5v t bit = 50ns t a = 27 ? c input cm = +21v ro a b a-b 20mbps rx extended common-mode range: maximum supply, maxi mum (+) common-mode extened common-mode perfor mance characterisitics
HI-4853 holt integrated circuits 8 high-speed performance char acteristics over distance di tx a tx b tx ro rx 10mbps data pulse over 1000ft 2 cat-5 utp v dd = 3.0v f data = 10mbps t a = 27 ? c 2v/div 100ns/div di tx a tx b tx ro rx 20mbps data pulse ov er 1000ft 2 cat-5 utp v dd = 3.0v f data = 20mbps t a = 27 ? c 2v/div 100ns/div di tx a tx b tx ro rx 2v/div 50ns/div 20mbps data over 250ft cat-5 utp v dd = 3.0v f data = 20mbps t a = 27 ? c a tx b tx ro rx 20mbps data over 250ft cat-5 utp 2v/div 50ns/div v dd = 3.0v f data = 20mbps t a = 27 ? c di tx a tx b tx ro rx 12mbps data pulse over 1000ft 2 cat-5 utp v dd = 3.0v f data = 12mbps t a = 27 ? c 2v/div 100ns/div
9 10 11 12 13 14 -55 -30 -5 20 45 70 95 120 temperature ( ? c) tx rise/fall time (ns) vdd = 3.0v vdd = 5.5v tx differential rise/fa ll time vs. temperature t bit = 100ns r l = 54 ? c l = 50pf 49 54 59 64 69 74 -55 -30 -5 20 45 70 95 120 temperature ( ? c) tx propagation delay (ns) tx differential rise/fal l time vs. temperature vdd = 3.0v vdd = 5.5v t bit = 100ns r l = 54 ? c l = 50pf HI-4853 holt integrated circuits 9 performance characteristics ov er supply an d temperature 1.5 2 2.5 3 3.5 -55 -30 -5 20 45 70 95 120 temperature ( ? c) tx propagation delay (ns) tx differential ze ro to peak amplitude t bit = 100ns r l = 54 ? c l = 50pf vdd = 3.0v vdd = 5.5v 30 35 40 45 50 55 60 -55 -30 -5 20 45 70 95 120 temperature ( ? c) rx propagation delay (ns) rx propagation del ay vs. temperature t bit = 100ns c l = 15pf vdd = 3.0v vdd = 5.5v input common-mode (v) rx propagation dela y vs. common-mode 41 42 43 44 45 46 47 48 49 -15 -10 -5 0 5 10 15 20 t bit = 100ns v dd = 3.3v t = 27 ? c c l = 14pf rx propagation delay (ns)
HI-4853 holt integrated circuits 10 typical transceiver perfor mance characterisitics di a b ro typical 10mb/s operation: r l = 54 ? ; c l = 50pf v dd = 3.3v f data = 10mbps t a = 27 ? c 2v/div 100ns/div di a b ro typical 20mb/s operation: r l = 54 ? ; c l = 50pf v dd = 3.3v f data = 20mbps t a = 27 ? c 2v/div 50ns/div di a b ro typical 10mb/s operation: r l = 54 ? ; c l = 50pf v dd = 5.0v f data = 10mbps t a = 27 ? c 5v/div 100ns/div di a b ro typical 20mb/s operation: r l = 54 ? ; c l = 50pf v dd = 5.0v f data = 20mbps t a = 27 ? c 5v/div 50ns/div 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.10.61.11.62.12.6 rx output jitter over cm and input amplitude (3.0v) input signal amplitude (v) rx output jitter (ui) v cm = +20v v cm = 0v v cm = -15v timing jitter: 0.5ui = 50ns pk-pk resulting in a 5% duty error 0 0.1 0.2 0.3 0.4 0.5 0.6 0.10.61.11.62.12.6 rx output jitter over cm and input amplitude (5.5v) input signal amplitude (v) rx output jitter (ui) v cm = +20v v cm = 0v v cm = -15v timing jitter: 0.5ui = 50ns pk-pk resulting in a 5% duty error single 4853 device single 4853 device single 4853 device single 4853 device
7 hi-4850 ordering information 16 pin plastic 4 x 4 mm chip scale (16pcs) (hi-4855 only. no m-flow) holt integrated circuits 11 HI-4853 hi-485x xx x x -40c to +85c -55c to +125c no yes i m -55c to +125c no t t i m pc 8 pin plastic narrow body so ic (8hn) (HI-4853, hi-4854) 8 pin cerdip (8d) not available pb-free (HI-4853, hi-4854) ps ps lead finish 100% matte tin (pb-free, rohs compliant) f tin / lead (sn / pb) solder blank cr 14 pin plastic narrow body soic (14hn) (hi-4855 only) half duplex transceiver 4853 full duplex tranceiver always enabled 4854 4855 full duplex transceiver with enable pins
HI-4853 revision date description of change ds4853, rev new 03/30/2012 initial release revision history holt integrated circuits 12 rev. a 05/21/2012 fix typos on package ordering information updated rx function table rows 2 and 3 on p. 2 for de = x. updated package drawings for soic-8 (8hn ), qfn-16 (16pcs) and soic-14 (14hn) packages. rev. b 08/2/2012
8 holt integrated circuits 13 HI-4853 package dimensions 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 dissipation . . .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)
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) 9 holt integrated circuits 14 HI-4853 package dimensions 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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