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________________________________________________________________________ http://www.union-ic.com rev.01 jan.2011 1/11 UM3208 8-bit bidirectional voltage-level translator for open-drain and push-pull application um3 208 csp20 general description the UM3208 is 15kv 8-channel esd-protected level translator provide the level shifting necessary to allow data transfer in a multi-vo ltage system. externally applied voltages, v ccb and v cca , set the logic levels on either side of the device. a low-voltage logic signal present on the v cca side of the device appears as a high-voltage logic signal on the v ccb side of the device, and vice-versa. the UM3208 bidirectional level translator utilizes a transmission-gate based design to allow data translation in either direction (v cca ? v ccb ) on any single data line. the UM3208 accepts v cca from +1.65v to +3.6v and v ccb from +2.3v to +5.5v, making it ideal for data transfer between low-voltage asics / plds and higher voltage systems. the UM3208 enters a three-state output mode to reduce supply current when output enable (oe) is low. the UM3208 is designed so that the oe input circuit is supplied by v cca . 15kv esd protection on the v ccb side for greater protection in applications that route signals externally. the UM3208 is a 8-channel level translator av ailable in 3.02.5 csp20 bump package. applications features z spi, microwire, and i 2 c level translation z low-voltage asic level translation z smart card readers z cell-phone cradles z portable pos systems z portable communication devices z low-cost serial interfaces z cell-phones z gps z telecommunications equipment z max data rates: 24mbps(push pull), 2mbps(open drain) z bidirectional level translation z 1.65v to 3.6v on a port and 2.3v to 5.5v on b port(v cc a v ccb ) z 15kv esd protection on b port z no power-supply sequencing required v cca or v ccb can be ramped first z csp20 bump package pin configurations (bottom view) (top view) m month code UM3208 csp20
________________________________________________________________________ http://www.union-ic.com rev.01 jan.2011 2/11 UM3208 terminal assignments 1 2 3 4 5 d v ccb b2 b4 b6 b8 c b1 b3 b5 b7 gnd b a1 a3 a5 a7 oe a v cca a2 a4 a6 a8 pin description pin name function a1 input/output 1. referenced to v cca v cca a-port supply voltage. 1.65v v cca 3.6v and v cca v ccb a2 input/output 2. referenced to v cca a3 input/output 3. referenced to v cca a4 input/output 4. referenced to v cca a5 input/output 5. referenced to v cca a6 input/output 6. referenced to v cca a7 input/output 7. referenced to v cca a8 input/output 8. referenced to v cca oe 3-state output enable. pull oe low to place all outputs in 3-state mode. referenced to v cca gnd ground b8 input/output 8. referenced to v ccb b7 input/output 7. referenced to v ccb b6 input/output 6. referenced to v ccb b5 input/output 5. referenced to v ccb b4 input/output 4. referenced to v ccb b3 input/output 3. referenced to v ccb b2 input/output 2. referenced to v ccb v ccb b-port supply voltage. 2.3v v ccb 5.5v b1 input/output 1. referenced to v ccb ordering information part number packaging type marking code shipping qty UM3208 csp20 aac 2500pcs/7inch tape & reel
________________________________________________________________________ http://www.union-ic.com rev.01 jan.2011 3/11 UM3208 absolute maximum ratings (note 1) over operating free-air temperature range (unless otherwise noted) symbol parameter value unit v cca supply voltage range -0.5 to +4.5 v v ccb supply voltage range -0.5 to +6.5 v a ports -0.5 to +4.5 v i input voltage range b ports -0.5 to +6.5 v a ports -0.5 to +4.5 v o voltage range applied to any output in the high-impedance or power-off state b ports -0.5 to +6.5 v a ports -0.5 to ( v cca +0.5) v o voltage range applied to any output in the high or low state (note 2) b ports -0.5 to ( v ccb +0.5) v i ik input clamp current v i 0 -50 ma i ok output clamp current v o 0 -50 ma i o continuous output current 50 ma continuous current through v cca , v ccb , or gnd 100 ma t op operating temperature range -40 to +85 c t stg storage temperature range -65 to +150 c note1. stresses beyond those listed under "a bsolute maximum ratings" may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. exposure to ab solute-maximum-rated conditions for extended periods may affect device reliability. note2. the value of v cca and v ccb are provided in the recommended operating conditions table. recommended operating conditions (note 1, 2) symbol parameter v cca v ccb min max unit v cca 1.65 3.6 v v ccb supply voltage 2.3 5.5 v 1.65v to 1.95v v cci -0.2 v cci a- port 2.3v to3.6v 2.3v to 5.5v v cci -0.4 v cci b- port v cci -0.4 v cci v v ih high level input voltage oe 1.65v to 3.6v 2.3v to 5.5v v cca 0.65 5.5 v a- port 0 0.15 b- port 0 0.15 v v il low level input voltage oe 1.65v to 3.6v 2.3v to 5.5v 0 v cca 0.35 v a-port push-pull driving 10 b-port push-pull driving 10 t/ v input transition rise or fall time control input 1.65v to 3.6v 2.3v to 5.5v 10 ns/v note1. v cci is the supply voltage associated with the input port. note2. v cca must be less than or equal to v ccb and must not exceed 3.6 v.
________________________________________________________________________ http://www.union-ic.com rev.01 jan.2011 4/11 UM3208 electrical characteristics (note 1, 2, 3) over recommended operating free-air temp erature range (unless otherwise noted) t a =25 -40 to 85 parameter test conditions v cca v ccb typ max min max unit v oha i oh =-20 a 1.65v to 3.6v 2.3v to 5.5v v cc a 0.8 v v ola i ol =1ma 1.65v to 3.6v 2.3v to 5.5v 0.4 v v ohb i oh =-20 a 1.65v to 3.6v 2.3v to 5.5v v ccb 0.8 v v olb i ol =1ma 1.65v to 3.6v 2.3v to 5.5v 0.4 v i i oe v i =v cci or gnd 1.65v to 3.6v 2.3v to 5.5v 1 2 a i oz a or b port oe=v il 1.65v to 3.6v 2.3v to 5.5v 1 2 a 1.65v to v ccb 2.3v to 5.5v 2.4 3.6v 0v 2.2 i cca v i =v o =open, i o =0 0v 5.5v -1 a 1.65v to v ccb 2.3v to 5.5v 12 3.6v 0v -1 i ccb v i =v o =open, i o =0 0v 5.5v 1 a i cca +i ccb v i =v o =open, i o =0 1.65v to 3.6v 2.3v to 5.5v 14.4 a c i oe 3.3v 3.3v 2.5 3.5 pf a port 5 6.5 c io b port 3.3v 3.3v 12 16.5 pf note1. v cci is the supply voltage associated with the input port. note2. v cco is the supply voltage associated with the output port. note3. v cca must be less than or equal to v ccb and must not exceed 3.6 v. timing requirements over recommended operating fre e-air temperature range, v cca = 1.8v 0.15v (unless otherwise noted) v ccb =2.5v 0.2v v ccb =3.3v 0.3v v ccb =5v 0.5v min max min max min max unit push-pull driving 24 24 24 data rate open-drain driving 2 2 2 mbps push-pull driving 41 41 41 t w pulse duration open-drain driving data inputs 500 500 500 ns timing requirements over recommended operating fre e-air temperature range, v cca = 2.5v 0.2v (unless otherwise noted) v ccb =2.5v 0.2v v ccb =3.3v 0.3v v ccb =5v 0.5v min max min max min max unit push-pull driving 24 24 24 data rate open-drain driving 2 2 2 mbps push-pull driving 41 41 41 t w pulse duration open-drain driving data inputs 500 500 500 ns
________________________________________________________________________ http://www.union-ic.com rev.01 jan.2011 5/11 UM3208 timing requirements over recommended operating fre e-air temperature range, v cca = 3.3v 0.3v (unless otherwise noted) v ccb =3.3v 0.3v v ccb =5v 0.5v min max min max unit push-pull driving 24 24 data rate open-drain driving 2 2 mbps push-pull driving 41 41 t w pulse duration open-drain driving data inputs 500 500 ns switching characteristics over recommended operating fr ee-air temperature range, v cca = 1.8v 0.15v (unless otherwise noted) v ccb =2.5v 0.2v v ccb =3.3v 0.3v v ccb =5v 0.5v paramete r from (input) to (output) test conditions min max min max min max unit push-pull 4.6 4.7 5.8 t phl open-drain 2.9 8.8 2.9 9.6 3 10 push-pull 6.8 6.8 7 t plh a b open-drain 45 260 36 208 27 198 ns push-pull 4.4 4.5 4.7 t phl open-drain 1.9 5.3 1.1 4.4 1.2 4 push-pull 5.3 4.5 0.5 t plh b a open-drain 45 175 36 140 27 102 ns a 200 200 200 t en oe b 200 200 200 ns a 50 40 35 t dis oe b 50 40 35 ns push-pull 3.2 9.5 2.3 9.3 2 7.6 t ra a port rise time open-drain 38 165 30 132 22 95 ns push-pull 4 10.8 2.7 9.1 2.7 7.6 t rb b port rise time open-drain 34 145 23 106 10 58 ns push-pull 2 5.9 1.9 6 1.7 13.3 t fa a port fall time open-drain 4.4 6.9 4.3 6.4 4.2 6.1 ns push-pull 2.9 7.6 2.8 7.5 2.8 8.8 t fb b port fall time open-drain 6.9 13.8 7.5 16.2 7 16.2 ns t sk(o) channel-to-channe l 1 1 1 ns push-pull 24 24 24 max data rate open-drain 2 2 2 mbps
________________________________________________________________________ http://www.union-ic.com rev.01 jan.2011 6/11 UM3208 switching characteristics over recommended operating fre e-air temperature range, v cca = 2.5v 0.2v (unless otherwise noted) v ccb =2.5v 0.2v v ccb =3.3v 0.3v v ccb =5v 0.5v paramete r from (input) to (output) test conditions min max min max min max unit push-pull 3.2 3.3 3.4 t phl open-drain 1.7 6.3 2 6 2.1 5.8 push-pull 3.5 4.1 4.4 t plh a b open-drain 43 250 36 206 27 190 ns push-pull 3 3.6 4.3 t phl open-drain 1.8 4.7 2.6 4.2 1.2 4 push-pull 2.5 1.6 0.7 t plh b a open-drain 44 170 37 140 27 103 ns a 200 200 200 t en oe b 200 200 200 ns a 50 40 35 t dis oe b 50 40 35 ns push-pull 2.8 7.4 2.6 6.6 1.8 5.6 t ra a port rise time open-drain 34 149 28 121 24 89 ns push-pull 3.2 8.3 2.9 7.2 2.4 6.1 t rb b port rise time open-drain 35 151 24 112 12 64 ns push-pull 1.9 5.7 1.9 5.5 1.8 5.3 t fa a port fall time open-drain 4.4 6.9 4.3 6.2 4.2 5.8 ns push-pull 2.2 7.8 2.4 6.7 2.6 6.6 t fb b port fall time open-drain 5.1 8.8 5.4 9.4 5.4 10.4 ns t sk(o) channel-to-channe l 1 1 1 ns push-pull 24 24 24 max data rate open-drain 2 2 2 mbps
________________________________________________________________________ http://www.union-ic.com rev.01 jan.2011 7/11 UM3208 switching characteristics over recommended operating fre e-air temperature range, v cca = 3.3v 0.3v (unless otherwise noted) v ccb =3.3v 0.3v v ccb =5v 0.5v paramete r from (input) to (output) test conditions min max min max unit push-pull 2.4 3.1 t phl open-drain 1.2 4.2 1.4 4.6 push-pull 4.2 4.4 t plh a b open-drain 36 204 28 165 ns push-pull 2.5 3.3 t phl open-drain 1 124 1 97 push-pull 2.5 2.6 t plh b a open-drain 3 139 3 105 ns a 200 200 t en oe b 200 200 ns a 40 35 t dis oe b 40 35 ns push-pull 2.3 5.6 1.9 4.8 t ra a port rise time open-drain 25 116 19 85 ns push-pull 2.5 6.4 2.1 7.4 t rb b port rise time open-drain 26 116 14 72 ns push-pull 2 5.4 1.9 5 t fa a port fall time open-drain 4.3 6.1 4.2 5.7 ns push-pull 2.3 7.4 2.4 7.6 t fb b port fall time open-drain 5 7.6 4.8 8.3 ns t sk(o) channel-to-channel 1 1 ns push-pull 24 24 max data rate open-drain 2 2 mbps .
________________________________________________________________________ http://www.union-ic.com rev.01 jan.2011 8/11 UM3208 applications information the UM3208 can be used in level-translation applications for interfacing devices or systems operating at different interface voltages with one another. the UM3208 is ideal for use in application where an open-drain driver is connect ed to the data i/os. the UM3208 can also be used in applications where a push-pull driver is connected to the data i/os, but the um3308 might be a better option for such push-pull applications. block diagram the UM3208 (block diagram see figure 1) does not require a direction-control signal to control the direction of data flow from a to b or from b to a. each a-port i/o has an internal 10-k ? pull-up resistor to v cca , and each b-port i/o has an internal 10-k ? pull-up resistor to v ccb . during a rising edge, the one-shot turns on the pmos transistors (pu1, pu2) for a short duration, which speeds up the low-to-high transition. figure 1 block diagram of UM3208 i/o cell input driver requirements the fall time (t fa , t fb ) of a signal depends on the output impedance of the external device driving the data i/os of the UM3208. similarly, the t phl and the maximum date rates also depend on the output impedance of the external driver. the values for t fa , t fb , t phl , and the maximum date rates in the data sheet assume that the output impedance of the external driver is less than 50 ? . power up during operation, ensure that v cca v ccb at all times. during power-up sequencing, v cca v ccb does not damage the device, so any power supply can be ramped up first. enable and disable the UM3208 has an oe input that is used to di sable the device by setting oe = low, which places all i/os in the high-impedance (hi-z) state. the disable time (tdis) indicates the delay between the time when oe goes low and when the outputs actua lly get disabled (hi-z). the enable time (ten) indicates the amount of time the user must allow for the one-shot circuitry to become operational after oe is taken high.
________________________________________________________________________ http://www.union-ic.com rev.01 jan.2011 9/11 UM3208 pull-up or pull-down resistors on i/o lines each a-port i/o has an internal 10-k ? pull-up resistor to v cca , and each b-port i/o has an internal 10-k ? pull-up resistor to v ccb . if a smaller value of pull-up resistor is required, an external resistor must be added from the i/o to v cca or v ccb (in parallel with the internal 10-k ? resistor). test circuits a. c l includes probe and jig capacitances. b. waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control. waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control. c. all input pulses are supplied by generators having the following characteristics: prr 100mhz, z o =50 ? , dv/dt 1v/ns. d. the outputs are measured one at a tim e, with one transition per measurement. e. t plz and t phz are the same as tdis. f. t pzl and t pzh are the same as ten. g. t plh and t phl are the same as tpd. h. v cci is the v cc associated with the input port. i. v cco is the v cc associated with the output port. j. all parameters and waveforms are not applicable to all devices. figure 2 load circuits and voltage waveforms
________________________________________________________________________ http://www.union-ic.com rev.01 jan.2011 10/11 UM3208 package information UM3208: csp20 3.0 2.5 outline drawing dimensions millimeters inch symbol min max min max a 0.61 0.024 a1 0.132 0.189 0.005 0.008 a2 0.32 0.405 0.0128 0.0162 d 2.90 3.10 0.116 0.124 e 2.40 2.60 0.096 0.104 d1 2.00bsc 0.08bsc e1 1.50bsc 0.06bsc e 0.50bsc 0.02bsc b 0.236 0.271 0.009 0.011 tape and reel orientation
________________________________________________________________________ http://www.union-ic.com rev.01 jan.2011 11/11 UM3208 important notice the information in this document has been ca refully reviewed and is believed to be accurate. nonetheless, this document is subjec t to change without notice. union assumes no responsibility for any inaccuracies that may be contained in this document, and makes no commitment to update or to keep current the contained information, or to notify a person or organization of any update. union rese rves the right to make changes, at any time, in order to improve reliability, function or design and to attempt to supply the best product possible. union semiconductor, inc add: 7f, no. 5, bibo road, shanghai 201203 tel: 021-51097928 fax: 021-51026018 website www.union-ic.com

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