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? semiconductor components industries, llc, 2003 september, 2003? rev. p0 1 publication order number: ncn2500/d ncn2500 product preview usb single channel transceiver the ncn2500 integrated circuit is a single channel transceiver designed to accommodate the physical usb port with a microcontroller digital i/o. the part is fully usb compliant and supports the full 12 mbps speed. on the other hand, the ncn2500 device includes the pull?up resistors as defined by the usb?ecn new specifications. features ? compliant to the usb specification, version 2.0, low and full speed ? very small footprint due to the qfn?16 package ? integrated d+/d? pull?up resistors ? operates over the full 1.5 v to 5.5 v vbat supply typical application ? portable computer ? cellular phone this document contains information on a product under development. on semiconductor reserves the right to change or discontinue this product without notice. pin connections http://onsemi.com qfn?16 tbd suffix case 485g marking diagram a = assembly location l = wafer lot y = year w = work week 16 xxx alyw 1 1 2 3 4 12 11 10 (top view ) dspd rcv vp vm vreg d+ d? 9 oe 5 6 7 8 16 15 14 13 en_vobus spnd gnd nc en_rpu vcc vusb vobus device package shipping ordering information ncn2500tbd qfn?16 tbd units/rail ncn2500tbd qfn?16 tbd tape & reel
ncn2500 http://onsemi.com 2 figure 1. typical application vcc 15 en_rpu 16 en_vobus 5 rcv 2 vp 3 vm 4 dspd 1 oe 9 spnd 7 vusb 14 vreg 12 vobus 13 d+ 11 d? 10 gnd 6 10 uf c1 gnd vcc c gnd 4.7 uf c2 gnd c3 1 uf gnd r2 33 r r3 33 r gnd gnd 4 3 2 1 usb port ncn2500
ncn2500 http://onsemi.com 3 figure 2. block diagram 5 en_vobus 16 gnd 100 k en_rpu internal pull?up resistors control vp vm dspd dspd 15 vcc v cc 3 vp 1 dspd 4 vm v cc 3.3 v 6 9 oe 3 + - 2 rcv 7 spnd v cc 3.3 v gnd 6 gnd nc 8 d? 10 d+ 11 s3 s1 s1 s2 rpu1 rpu2 vobus 13 vreg 12 ldo 3.3 v vusb 14 3.3 v s5 3.3 v 2
ncn2500 http://onsemi.com 4 pin function description pin symbol function description 1 dspd input the dspd logic level (data speed) activates the low or the high speed operation on the usb port. dspd = low low speed, rpu1 & rpu2 connected to d? dspd = high full speed, rpu1 & rpu2 connected to d+ 2 rcv output this pin interfaces the usb signals with the microcontroller digital line. the data present on the d+/d? pins are translated onto this signal. 3 vp i/o this pin, associated with vm, is an i/o system interface signal depending upon the oe logic state: oe = low vp is a plus driver input (from c to usb bus) oe = high vp is a plus receiver output (from usb bus to c) 4 vm i/o this pin, associated with vp, is an i/o system interface signal depending upon the oe logic state: oe = low vp is a minus driver input (from c to usb bus) oe = high vp is a minus receiver output (from usb bus to c) 5 en_vobus input digital input to control the vobus voltage. en_vobus = low vobus connected to vreg en_vobus = high vobus disconnected from vreg (hi z) 6 gnd pwr this pin carries the digital and usb ground level. high quality pcb design shall be observed to avoid uncontrolled voltage spikes. 7 spnd input the spnd digital signal (suspend) selects the operation mode to reduce the power supply current. spnd = low normal operation spnd = high suspend mode, no activity takes place 8 nc ? no connection, shall be neither grounded, nor connected to vcc or vbus. 9 oe input this pin activates the operating mode of the d?/d+ signals. oe = low logic level data are transmitted onto the usb bus oe = high logic level data are received from the usb bus 10 d? i/o this pin is connected to the usb minus data line i/o. the data direction depends upon the oe logic state. 11 d+ i/o this pin is connected to the usb plus data line i/o the data direction depends upon the oe logic state. 12 vreg pwr this pin provides a 3.3 v regulated voltage to supply the internal usb blocks and the external termination bias resistor. an external circuit can be connected to this ldo, assuming the current does not extend the maximum rating (50 ma). 13 vobus output, pwr this pin connects the vreg voltage to the 1.5 k external pull?up resistor. the vobus voltage is controlled by the logic states present pin 5. 14 vusb pwr this pin is connected to the usb port +vcc supply voltage. 15 vcc pwr this pin provides the interface power supply. the power source can be an external supply or can be derived from the usb + vcc voltage. 16 en_rpu input this pin activates or deactivate the internal rpu1 and rpu2 pull?up resistors: en_rpu = h rpu1 and rpu2 activated en_rpu = l rpu1 and rpu2 deactivated
ncn2500 http://onsemi.com 5 maximum ratings (note 1) rating symbol value unit power supply voltage vcc 6.0 v digital input pins vind ?0.5 v < vin < vcc + 0.5 v, but < 6.0 v v digital input pins vid ?0.5 v < vin < agnd + 0.5 v, but < 6.0 v v esd capability, hbm (note 2) vusb, d+, d?, gnd any other pins machine model, any pins v esd 10 2.0 200 kv kv v qfn?16 package power dissipation @ tamb = +85 c thermal resistance, junction?to?air (r ja ) p ds r ja tbd tbd mw c/w operating ambient temperature range t a ?25 to +85 c operating junction temperature range t j ?25 to +125 c maximum junction temperature (note 3) tjmax +150 c storage temperature range ts g ?65 to +150 c 1. maximum electrical ratings are defined as those values beyond which damage(s) to the device may occur whatever be the operati ng temperature. 2. human body model, r = 1500 , c = 100 pf; machine model. 3. absolute maximum rating beyond which damage(s) to the device may occur.
ncn2500 http://onsemi.com 6 electrical characteristics characteristic symbol pin min typ max unit digital parameters section @ 1.5 v < vcc < 5.5 v (?40 c to +85 c ambient temperature, unless otherwise noted.) note: digital inputs undershoot < ?0.3 v to ground, digital inputs overshoot < 0.3 v to vcc. high level input voltage dspd, vp, vm, en_vobus , spnd, oe , en_rpu v ih 1, 3, 4, 5, 7, 9, 16 2/3 vcc ? ? v low level input voltage dspd, vp, vm, en_vobus , spnd, oe , en_rpu v il 1, 3, 4, 5, 7, 9, 16 ? ? 1/3 vcc v high level output voltage rcv, vp, vm @ i oh = 1.0 ma v oh 2, 3, 4 2/3 vcc ? ? v low level output voltage rcv, vp, vm @ i ol = 1.0 ma v ol 2, 3, 4 ? ? 1/3 vcc v input leakage current dspd, vp, vm, en_vobus , spnd, oe , en_rpu i il 1, 3, 4, 5, 7, 9, 16 ? ? 5.0 a td td tr, tf transceiver section @ 1.5 v < vcc < 5.5 v (?40 c to +85 c ambient temperature, unless otherwise noted.) static output high, d?, d+ @ oe = low, r l = 15 k w to gnd v oh 10, 11 2.8 ? 3.6 v static output low, d?, d+ @ oe = low, r l = 1.5 k w to vreg v ol 10, 11 ? ? 0.3 v single input receiver threshold v se 10, 11 0.8 ? 2.0 v single ended receiver hysteresis (note 4) ? ? ? 200 ? mv differential input sensitivity | d+ ? d? | @ 0.8 v < v cm < 2.5 v v di 10, 11 0.2 ? ? v differential common mode including the v di v cm 10, 11 0.8 ? 2.5 v differential receiver hysteresis (note 4) ? 10, 11 ? 70 ? mv d+ and d? transceiver hi?z state leakage current @ oe = 1, 0 v < vusb < 3.3 v i lo 10, 11 ? ? 10 a transceiver input capacitance (note 4) cin 10, 11 ? ? 20 pf transceiver output resistance z drv 10, 11 28 ? 44 transceiver input impedance (note 4) z in 10, 11 10 ? ? m internal rpu1 pull resistor r rpu?1 10, 12 900 ? 1575 internal rpu2 pull up resistor r rpu?2 10, 12 525 ? 1515 low speed driver operation transition rise time @ c l = 50 pf @ c l = 600 pf tr 10, 11 75 75 ? ? 300 300 ns transition fall time @ c l = 50 pf @ c l = 600 pf tf 10, 11 75 75 ? ? 300 300 ns rise and fall time matching tr, tf 10, 11 80 ? 125 % output signal crossover voltage v crs 10, 11 1.3 ? 2.0 v data transaction rate drate 10, 11 ? ? 1.5 mbs 4. parameter guaranteed by design, not production tested.
ncn2500 http://onsemi.com 7 electrical characteristics (continued) characteristic symbol pin min typ max unit full speed driver operation transition rise time @ c l = 50 pf tr 10, 11 4.0 ? 20 ns transition fall time @ c l = 50 pf tf 10, 11 4.0 ? 20 ns rise and fall time matching tr, tf 10, 11 90 ? 110 % output signal crossover voltage v crs 10, 11 1.3 ? 2.0 v data transaction rate drate 10, 11 ? ? 12 mbs transceiver timing oe to rcvr hi?z delay (see figure 3) t pvz 9 ? ? 15 ns receiver hi?z to transmit delay (see figure 3) t pzd ? 15 ? ? ns oe to drvr hi?z delay (see figure 3) t pdz ? ? ? 15 ns driver hi?z to receiver delay (see figure 3) t pzv ? 15 ? ? ns vp/vm to d+/d? propagation delay (see figure 6) t plh 3, 4, 10, 11 ? ? 15 ns vp/vm to d+/d? propagation delay (see figure 6) t phl 3, 4, 10, 11 ? ? 15 ns d+/d? to rcv propagation delay @ 1.5 < vcc < 5.5 v (see figure 5) c l = 25 pf tr = tf = 3.0 ns t plh 11, 10, 2 ? ? 15 ns d+/d? to rcv propagation delay @ 1.5 < vcc < 5.5 v (see figure 5) c l = 25 pf tr = tf = 3.0 ns t phl 11, 10, 2 ? ? 15 ns d+/d? to vp/d? propagation delay @ 1.5 < vcc < 5.5 v (see figure 5) c l = 25 pf tr = tf = 3.0 ns t plh 11, 10, 3 ? ? 8.0 ns d+/d? to vm/d? propagation delay @ 1.5 < vcc < 5.5 v (see figure 5) c l = 25 pf tr = tf = 3.0 ns t phl 11, 10, 4 ? ? 8.0 ns power supply section @ 1.5 v < vcc < 5.5 v (?40 c to +85 c ambient temperature, unless otherwise noted.) usb port input supply voltage vusb 14 4.0 ? 5.25 v output regulated voltage @ 4.0 v < vusb < 5.25 v, cin = 4.7 f, cout = 1.0 f, ireg = 100 ma vreg 12 3.0 3.3 3.6 v line regulation output voltage vreg 12 ? 0.1 ? % standby current @ vusb = 5.25 v, oe = h, spnd = h, d+ & d? are idle, vcc = 3.6 v i vcc 14 ? 1.0 ? a standby current @ vusb = 5.25 v, oe = h, spnd = l, d+ & d? are idle, vcc = 3.6 v i vcc 14 ? 1.0 ? a operating current oe = l, d? & d+ active, spnd = l (note 5), transmitter mode @ f = 6.0 mhz, c l = 50 pf @ f = 750 khz, c l = 600 pf i vcc 14 ? 300 40 ? ? a operating current oe = h, d? & d+ active, spnd = l (note 5), receiver mode @ f = 6.0 mhz, c l = 25 pf @ f = 750 khz, c l = 25 pf i vcc 14 ? 1.5 250 ? ? ma a 5. parameter guaranteed by design, not production tested.
ncn2500 http://onsemi.com 8 electrical characteristics (continued) characteristic symbol pin min typ max unit power supply section @ 1.5 v < vcc < 5.5 v (continued) (?40 c to +85 c ambient temperature, unless otherwise noted.) usb supply current @ d? & d+ are idle, vusb = 5.25 v and: @ spnd = 1, oe = 1, dspd = 0, en_rpu = 0 @ spnd = 0, oe = 1, dspd = 1, en_rpu = 0 @ spnd = 0, oe = 0, dspd = 0, en_rpu = 0 @ spnd = 1, oe = 1, dspd = 0, en_rpu = 1 @ spnd = 0, oe = 1, dspd = 1, en_rpu = 1 @ spnd = 0, oe = 0, dspd = 0, en_rpu = 1 @ d? & d+ are active, c l = 50 pf, vusb = 5.25 v, spnd = 0, oe = 0, dspd = 1, f = 6.0 mhz (note 6) @ en_rpu = low @ en_rpu = high @ d? & d+ are active (note 6) vusb = 5.25 v, spnd = 0, oe = 0, dspd = 1, f = 750 khz, c l = 600 pf f = 750 khz, c l = 300 pf i bus 14 ? ? ? ? ? ? ? ? ? ? 120 1.7 1.7 320 ? ? 8.3 9.4 5.4 3.9 200 ? ? 500 ? ? ? ? ? ? a ma ma a a a ma ma ma ma 6. parameter guaranteed by design, not production tested.
ncn2500 http://onsemi.com 9 table 1. internal rpu1 and rpu2 pull?up resistors control en_rpu dspd s1 s2 s3 data line usb note 0 x x x x x x internal rpu de?activated, s1 and s3 are forced open 1 1 open x open vbus off x internal rpu disabled 1 1 close close open idle full speed internal rpu activated 1 1 closed open open receiving full speed internal rpu activated 1 0 open x open vbus off x internal rpu disabled 1 0 open close close idle low speed internal rpu activated 1 0 open open close receiving low speed internal rpu activated 7. see figure 8 and figure 9. table 2. transmit mode interface control (oe = 0 transmit mode) spnd vp vm d+ d? rcv state 0 0 0 0 0 x se0 0 0 1 0 1 0 low 0 1 0 1 0 1 high 0 1 1 1 1 x undefined 1 0 0 0 0 0 suspend 1 0 1 0 1 0 suspend 1 1 0 1 0 0 suspend 1 1 1 1 1 0 suspend table 3. receive mode interface control (oe = 1 receive mode) spnd d+ d? vp vm rcv state 0 0 0 0 0 x se0 0 0 1 0 1 0 low 0 1 0 1 0 1 high 0 1 1 1 1 x undefined 1 0 0 0 0 0 suspend 1 0 1 0 1 0 suspend 1 1 0 1 0 0 suspend 1 1 1 1 1 0 suspend
ncn2500 http://onsemi.com 10 vp vm d+ d? 0 oe 1 t pvz t pzd t pzv figure 3. enable and disable usb times d+ differential data lines 10% d? 90% v crs t r t f figure 4. usb line rise and fall times d+ differential data lines d? t plh t phl output signal v oh v ol v ss figure 5. receiver propagation delays d+ differential data lines d? input signal v oh v ol v ss t plh t phl figure 6. driver propagation delays
ncn2500 http://onsemi.com 11 c2 50 pf/600 pf gnd 1 c1 25 pf gnd 1 transmitter mode c2 50 pf/600 pf gnd 1 c1 25 pf gnd 1 receiver mode figure 7. input/output stray capacitance definitions +33 v s2 rpu2 s3 s1 11 10 d+ d? port control rpu1 & rpu2 disabled and vbus off +33 v s2 rpu2 s3 s1 11 10 d+ d? port control idle, high speed rpu1 rpu1 +33 v s2 rpu2 s3 s1 11 10 d+ d? port control idle, low speed rpu1 figure 8. internal rpu1 and rpu2 pull?up resistors operation, idle mode +33 v s2 rpu2 s3 s1 11 10 d+ d? port control receiving (low speed) +33 v s2 rpu2 s3 s1 11 10 d+ d? port control receiving (high speed) rpu1 rpu1 figure 9. internal rpu1 and rpu2 pull?up resistors activated, receiving mode note: internal pull?up resistor range: rpu1: 900 min?1575 max, rpu2: 525 min?1515 max
ncn2500 http://onsemi.com 12 typical applications figure 10. fully independent power supplies vcc 15 en_rpu 16 en_vobus 5 rcv 2 vp 3 vm 4 dspd 1 oe 9 spnd 7 vusb 14 vreg 12 vobus 13 d+ 11 d? 10 gnd 6 10 uf c1 gnd vcc c gnd 4.7 uf c2 gnd c3 1 uf gnd r2 33 r r3 33 r gnd gnd 4 3 2 1 usb port ncn2500 in this application, the two internal pull?up resistors (rpu1 and rpu2) are used to bias the usb line. consequently, the vobus voltage is deactivated (pin 5 connected to vcc).
ncn2500 http://onsemi.com 13 typical applications figure 11. common power supply from usb port vcc 15 en_rpu 16 en_vobus 5 rcv 2 vp 3 vm 4 dspd 1 oe 9 spnd 7 vusb 14 vreg 12 vobus 13 d+ 11 d? 10 gnd 6 4.7 uf c2 gnd c gnd c3 1 uf gnd r2 33 r r3 33 r gnd gnd 4 3 2 1 usb port ncn2500 figure 12. serial to usb stand?alone interface vcc 15 en_rpu 16 en_vobus 5 rcv 2 vp 3 vm 4 dspd 1 oe 9 spnd 7 vusb 14 vreg 12 vobus 13 d+ 11 d? 10 gnd 6 c2 10 uf c gnd c3 1 uf gnd r2 33 r r3 33 r gnd gnd 4 3 2 1 usb port ncn2500 rs232 port gnd gnd
ncn2500 http://onsemi.com 14 typical applications figure 13. peripheral are powered by the vreg supply vcc 15 en_rpu 16 en_vobus 5 rcv 2 vp 3 vm 4 dspd 1 oe 9 spnd 7 vusb 14 vreg 12 vobus 13 d+ 11 d? 10 gnd 6 c2 4.7 uf c gnd c3 1 uf gnd r2 33 r r3 33 r gnd gnd 4 3 2 1 usb port ncn2500 rs232 port gnd gnd figure 14. using external pull?up resistors vcc 15 en_rpu 16 en_vobus 5 rcv 2 vp 3 vm 4 dspd 1 oe 9 spnd 7 vusb 14 vreg 12 vobus 13 d+ 11 d? 10 gnd 6 c2 4.7 uf c gnd c3 1 uf gnd r2 33 r r3 33 r gnd gnd 4 3 2 1 usb port ncn2500 rs232 port gnd gnd r1 1.5 k note: pin 16 can be left open, due to the internal pull?down resistor, or connected to ground.
ncn2500 http://onsemi.com 15 package dimensions qfn?16 tbd suffix case 485g?01 issue a x m 0.10 (0.004) t ?t? ?x? note 3 seating plane l a m ?y? b n 0.25 (0.010) t 0.25 (0.010) t j c k r 0.08 (0.003) t g e h f p d y 1 4 58 12 9 16 13 dim min max min max inches millimeters a 3.00 bsc 0.118 bsc b 3.00 bsc 0.118 bsc c 0.80 1.00 0.031 0.039 d 0.23 0.28 0.009 0.011 g 0.50 bsc 0.020 bsc h 0.875 0.925 0.034 0.036 j 0.20 ref 0.008 ref k 0.00 0.05 0.000 0.002 l 0.35 0.45 0.014 0.018 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeters. 3. dimension d applies to plated terminal and is measured between 0.25 and 0.30 mm from terminal. 4. coplanarity applies to the exposed pad as well as the terminals. e 1.75 1.85 0.069 0.073 f 1.75 1.85 0.069 0.073 m 1.50 bsc 0.059 bsc n 1.50 bsc 0.059 bsc p 0.875 0.925 0.034 0.036 r 0.60 0.80 0.024 0.031
ncn2500 http://onsemi.com 16 on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and s pecifically disclaims any and all liability, including without limitation special, consequential or incidental damages. atypicalo parameters which may be provided in scillc data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including atypicalso must be validated for each customer application by customer's technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body , or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indem nify and hold scillc and its of ficers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and re asonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized u se, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employ er. publication ordering information japan : on semiconductor, japan customer focus center 2?9?1 kamimeguro, meguro?ku, tokyo, japan 153?0051 phone : 81?3?5773?3850 on semiconductor website : http://onsemi.com for additional information, please contact your local sales representative. ncn2500/d literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303?675?2175 or 800?344?3860 toll free usa/canada fax : 303?675?2176 or 800?344?3867 toll free usa/canada email : orderlit@onsemi.com n. american technical support : 800?282?9855 toll free usa/canada

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