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high speed digital logic - smt 1 HMC744LC3 v03.0514 14 gbps, fa s t ri s e time 1:2 fanout b uffer w/ p rogramma b le out p ut voltage & p o s itive s u pp ly the HMC744LC3 is a 1:2 fanout buffer designed to support data transmission rates up to 14 gbps, and clock frequencies as high as 14 ghz. all differential inputs to the HMC744LC3 are cml and terminated on-chip with 50 ohms to the positive supply, vcc, and may be ac or dc coupled. the differential cml outputs are source terminated to 50 ohms and may also be ac or dc coupled. outputs can be connected directly to a 50 ohm vcc-terminated system, while dc blocking capacitors may be used if the terminating system is 50 ohms to ground. the HMC744LC3 also features an output level control pin, vr, which allows for loss compensation or signal-level optimization. the HMC744LC3 operates from a single 3.3 v supply and is available in rohs-compliant 3x3 mm smt package. general description features functional diagram inputs terminated internally to 50 ohms differential & single-ended operation propagation delay: 120 ps fast rise and fall times: 22 / 20 ps programmable differential output voltage swing: 600 - 1100 mv low power consumption: 287 mw typ. single supply: +3.3 v 16 lead ceramic 3x3 mm smt package: 9 mm 2 typical applications the HMC744LC3 is ideal for: ? rf ate applications ? broadband test & measurement ? serial data transmission up to 14 gbps ? clock buffering up to 14 ghz electrical s pecifcations, t a = +25 oc, vcc = 3.3 v, vr = 3.3 v parameter conditions min. typ. max units power supply voltage 3.0 3.3 3.6 v power supply current 87 ma maximum data rate 14 gbps maximum clock rate 14 ghz input voltage range vcc - 1.5 vcc + 0.5 v input differential range 0.1 2 vp-p input return loss frequency <14 ghz 10 db output amplitude single-ended, peak-to-peak 550 mvp-p differential, peak-to-peak 110 0 mvp-p output high voltage 3.29 v output low voltage 2.74 v output rise / fall time single-ended, 20% - 80% 22 / 20 ps for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
high speed digital logic - smt 2 HMC744LC3 v03.0514 14 gbps, fa s t ri s e time 1:2 fanout b uffer w/ p rogramma b le out p ut voltage & p o s itive s u pp ly electrical s pecifcations (continued) parameter conditions min. typ. max units output return loss frequency <13 ghz 10 db small signal gain 27 db random jitter j r rms 0.2 ps rms deterministic jitter, j d - , 2 15 -1 prbs input [1] 2 6 ps propagation delay, td 120 ps d1 to d2 data skew, t skew <2 ps vr pin current vr = 3.3 v 2 ma vr pin current vr = 3.7 v 3.5 ma [1] deterministic jitter measured at 13 ghz with a 300 mvp-p, 2 15 -1 prbs input sequence. [1] vr = 3.3 v [2] frequency = 13 ghz [3] vcc = 3.3 v dc current vs. s upply voltage [1][2] rise / fall time vs. s upply voltage [1][2] 70 75 80 85 90 95 100 105 110 2.9 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 +25c +85c -40c dc current (ma) supply voltage (v) 15 17 19 21 23 25 2.9 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 tr tf rise/fall time (ps) supply voltage (v) output differential voltage vs. s upply voltage [1][2] 1000 1025 1050 1075 1100 1125 1150 1175 1200 2.9 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 +25c +85c -40c vout differential (mvp-p) supply voltage (v) output differential voltage vs. frequency [1][3] 400 600 800 1000 1200 1400 2 4 6 8 10 12 14 16 18 vout differential (mvp-p) frequency (ghz) for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
high speed digital logic - smt 3 HMC744LC3 v03.0514 14 gbps, fa s t ri s e time 1:2 fanout b uffer w/ p rogramma b le out p ut voltage & p o s itive s u pp ly [1] vcc = 3.3 v [2] frequency = 13 ghz input return loss vs. frequency output return loss vs. frequency rise / fall time vs. vr [1][2] output differential voltage vs. vr [1][2] -30 -25 -20 -15 -10 -5 0 0 2 4 6 8 10 12 14 return loss (db) frequency (ghz) -35 -30 -25 -20 -15 -10 -5 0 0 2 4 6 8 10 12 14 return loss (db) frequency (ghz) 15 17 19 21 23 25 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7 tr tf rise/fall time (ps) vr (v) 400 600 800 1000 1200 1400 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7 +25c +85c -40c vout differential (mvp-p) vr (v) for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
high speed digital logic - smt 4 HMC744LC3 v03.0514 14 gbps, fa s t ri s e time 1:2 fanout b uffer w/ p rogramma b le out p ut voltage & p o s itive s u pp ly eye diagram timing diagram truth table input outputs din d1 d2 l l l h h h notes: din = dinp - dinn d1 = d1p - d1n d2 = d2p - d2n h - positive differential voltage l - negative differential voltage [1] test conditions: pattern generated with an agilent n4903a serial bert. eye diagram presented on a tektronix csa 8000. device input = 13 gbps pn code. both output channels shown. device is ac coupled to scope for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
high speed digital logic - smt 5 HMC744LC3 v03.0514 14 gbps, fa s t ri s e time 1:2 fanout b uffer w/ p rogramma b le out p ut voltage & p o s itive s u pp ly absolute maximum ratings electrostatic sensitive device observe handling precautions outline drawing notes: 1. package body material: alumina 2. lead and ground paddle plating: 30-80 microinches gold over 50 microinches minimum nickel. 3. dimensions are in inches [millimeters]. 4. lead spacing tolerance is non-cumulative. 5. package warp shall not exceed 0.05 mm datum -c- 6. all ground leads must be soldered to pcb rf ground. 7. paddle must be soldered to gnd. power supply voltage (vcc) vcc -0.5 v to +3.75 v input signals vcc -2.0 v to vcc +0.5 v output signals vcc -1.5 v to vcc +0.5 v continuous pdiss (t = 85 c) (derate 17 mw/c above 85 c) 0.68 w thermal resistance (r th j-p ) worst case junction to package paddle 59 c/w maximum junction temperature 125 c storage temperature -65 c to +150 c operating temperature -40 c to +85 c esd sensitivity (hbm) class 1c p ackage information part number package body material lead finish msl rating package marking [2] HMC744LC3 alumina, white gold over nickel msl3 [1] h744 xxxx [1] max peak refow temperature of 260 c [2] 4-digit lot number xxxx for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
high speed digital logic - smt 6 HMC744LC3 v03.0514 14 gbps, fa s t ri s e time 1:2 fanout b uffer w/ p rogramma b le out p ut voltage & p o s itive s u pp ly pin number function description interface schematic 1, 4, 5, 8, 9, 12 gnd signal grounds 2, 3 10, 11 d1p, d1n d2n, d2p differential data outputs: current mode logic (cml) referenced to positive supply. 6, 7 dinp, dinn differential data inputs: current mode logic (cml) referenced to positive supply. 13, 16 vcc positive supply 14, package base gnd supply ground 15 vr output level control. output level may be adjusted by applying a voltage to vr per output differential vs. vr plot. p in descriptions for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
high speed digital logic - smt 7 HMC744LC3 v03.0514 14 gbps, fa s t ri s e time 1:2 fanout b uffer w/ p rogramma b le out p ut voltage & p o s itive s u pp ly evaluation p c b the circuit board used in the application should use rf circuit design techniques. signal lines should have 50 ohm impedance while the package gro- und leads should be connected directly to the ground plane similar to that shown. the exposed packaged base should be connected to gnd. a sufficient number of via holes should be used to connect the top and bottom ground planes. the evaluation circuit board shown is available from hittite upon request. install jumper on jp1 to short vr to vcc for normal operation. list of materials for evaluation p c b 122517 [1] item description j1 - j6 pcb mount sma rf connectors j7 - j9 dc pin jp1 shorting jumper c1, c2 4.7 f capacitor, tantalum c3 - c5 100 pf capacitor, 0402 pkg. r2 10 ohm resistor, 0603 pkg. u1 HMC744LC3 high speed logic, fanout buffer pcb [2] 122515 evaluation board [1] reference this number when ordering complete evaluation pcb [2] circuit board material: arlon 25fr or rogers 4350 for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
high speed digital logic - smt 8 HMC744LC3 v03.0514 14 gbps, fa s t ri s e time 1:2 fanout b uffer w/ p rogramma b le out p ut voltage & p o s itive s u pp ly application circuit for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
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