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this is information on a product in full production. may 2013 docid024623 rev 1 1/20 20 st2349i 4-bit dual supply level translator without direction control pin and integrated pull-up datasheet - production data features ? 18 mbps (max.) data rate when driven by a totem pole driver ? 6.8 mbps (max.) data rate when driven by an open drain pole driver ? bidirectional level translation without direction control pin ? wide v l voltage range of 1.65 to 3.6 v ? wide v cc voltage range of 1.80 to 5.5 v ? integrated 10 k ? pull-up on v cc and v l sides ? power-down mode feature ? when either supply is off, all i/os are in high impedance ? low quiescent current (max. 8 a) ? able to be driven by totem pole and open drain drivers ? 5.5 v tolerant enable pin ? esd performance on all pins: 2 kv hbm ? small package and footprint qfn16 (2.6 x 1.8 mm) package applications ? low voltage system level translation ? mobile phones and other mobile devices ? i 2 c level translation ? uart level translation description the st2349i device is a 4-bit dual supply level translator which provides the level shifting capability to allow data tr ansfer in a multi-voltage system. externally applied voltages, v cc and v l , set the logic levels on either side of the device. it utilizes transmission gate-based de sign that allows bidirectional le vel translation without a control pin. the st2349i device accepts a v l from 1.65 to 3.6 v and v cc from 1.80 to 5.5 v, making it ideal for data transfer between low-voltage asics/plds and higher voltage systems. this device has a tri-state output mode which can be used to disable all i/os. the st2349i device supports power-down mode when v cc is grounded/floating and the device is disabled via the oe pin. the device has integrated 10 k ? pull-ups on both sides. qfn16 (2.6x1.8mm) table 1. device summary order code package packaging ST2349IQTR qfn16 (2.6 x 1.8 mm) tape and reel (3000 parts per reel) www.st.com
contents st2349i 2/20 docid024623 rev 1 contents 1 pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 device block diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 supplementary notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 driver requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 load driving capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.3 power off feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.4 truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5.1 dc characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5.2 ac characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.2.1 device driven by open drain driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.2.2 device driven by totem pole driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
docid024623 rev 1 3/20 st2349i pin settings 1 pin settings 1.1 pin connection figure 1. st2349i pin connection (top through view) 1.2 pin description

table 2. st2349i pin description pin number symbol name and function 1i/o vl2 data input/output 2 oe output enable 3i/o vl3 data input/output 4i/o vl4 data input/output 5 nc no connection 6v l supply voltage 7v cc supply voltage 8 nc no connection 9 i/o vcc4 data input/output 10 i/o vcc3 data input/output 11 gnd ground 12 i/o vcc2 data input/output 13 i/o vcc1 data input/output 14 v cc supply voltage 15 v l supply voltage 16 i/o vl1 data input/output
device block diagrams st2349i 4/20 docid024623 rev 1 2 device block diagrams figure 2. st2349i block diagram (1) , (2) 1. st2349i has 4 channels. for simplicity, the above diagram shows only 1 channel. 2. when oe is low, all i/o s are in high-impedance mode. figure 3. application block diagram (1) 1. external pull-up resistors are optional. only needed if a pull-up value lower than 10 k ? is desired. 9 / 9 && 2( ,2 9/ ,2 9&& 9 / v\vwhp frqwuroohu 9 && v\vwhp frqwuroohu 9 / 9 / 9 && ? ) ? ) ? ) ,2 9/ ,2 9/ ,2 9/ 9 / 9 / 9 / ,2 9&& ,2 9&& ,2 9&& 9 && 9 && 9 && 9 && &6
docid024623 rev 1 5/20 st2349i supplementary notes 3 supplementary notes 3.1 driver requirement the st2349i device may be driven by an open drain or totem pole driver and the nature of the device?s output is ?open drain?. it must no t be used to drive a pull-down resistor since the impedance of the output at hi gh state depends on the pull-up resistor placed at the i/os. as the device has pull-up resistors on both the i/o vcc and i/o vl ports, the user needs to ensure that the driver is able to sink the re quired amount of current. for example, if the settings are v cc =5.5v, v l = 4.3 v and the pull-up resistor is 10 k ? , then the driver must be able to sink at least (5.5 v/10 k ? ) + (4.3 v/10 k ? ) ? 1 ma and still meet the v il requirements of the st2349i device. 3.2 load driving capability to support the open drain system, the one-sh ot transistor is turned on only during high transition at the output side. wh en it drives a high state, afte r the one-shot transistor is turned off, only the pull-up resistor is able to maintain the state. in this case, the resistive load is not recommended. 3.3 power off feature in some applications where it might be required to turn off one of the power supplies powering up the level translator, the user may turn off the v cc only when the oe pin is low (device is disabled). there will be no current consumption in v l due to floating gates or other causes, and the i/os are in a high-impedance state in this mode. 3.4 truth table table 3. truth table enable bidirectional input/output oe i/o vcc i/o vl h (1) 1. high level v l power supply referred. h (2) 2. high level v cc power supply referred. h (1) h (1) l l l z (3) 3. z = high impedance. z (3)
maximum rating st2349i 6/20 docid024623 rev 1 4 maximum rating stressing the device above the rating listed in table 4: absolute maximum ratings may cause permanent damage to the device. these are stress ratings only, and operation of the device at these or any other conditions above those indicated in table 5: recommended operating conditions of this specification is not imp lied. exposure to absolute maximum rating conditions for ex tended periods may affe ct device reliability. recommended operating conditions table 4. absolute maximum ratings symbol parameter value unit v l supply voltage -0.3 to 4.6 v v cc supply voltage -0.3 to 6.5 v v oe dc control input voltage -0.3 to 6.5 v v i/ovl dc i/o vl input voltage (oe = gnd or v l ) -0.3 to v l + 0.3 v v i/ovcc dc i/o vcc input voltage (oe = gnd or v l ) -0.3 to v cc + 0.3 v i ik dc input diode current -20 ma i i/ovl dc output current 25 ma i i/ovcc dc output current 258 ma i sctout short circuit duration, continuous 40 ma p d power dissipation (1) 1. 500 mw: 65 c derated to 300 mw by 10 w/c: 65 c to 85 c. 500 mw t stg storage temperature -65 to 150 c tl lead temperature (10 seconds) 300 c esd electrostatic discharge protection (hbm) 2 kv table 5. recommended operating conditions symbol parameter min. typ. max. unit v l supply voltage 1.65 3.6 v v cc (1) 1. v cc must be greater than v l . supply voltage 1.8 5.5 v v oe input voltage (oe output enable pin, v l power supply referred) 03.6v vi/o vl i/o vl voltage 0 v l v vi/o vcc i/o vcc voltage 0 v cc v t op operating temperature -40 85 c dt/dv input rise and fall time 0 1 ns/v
docid024623 rev 1 7/20 st2349i electrical characteristics 5 electrical characteristics 5.1 dc characteristics over recommended operating conditions unless otherwise noted. all typical values are at t a = 25 c. table 6. dc characteristics symbol parameter v l v cc test conditions value unit t a = 25 c -40 to 85 c min. typ. max. min. max. v ihl high level input voltage (i/o vl ) 1.65 v l to 5.5 ? 1.4 ?? 1.4 ? v 2.0 1.6 ?? 1.6 ? 2.5 2.0 ?? 2.0 ? 3.0 2.4 ?? 2.4 ? 3.6 2.8 ?? 2.8 ? v ill low level input voltage (i/o vl ) 1.65 v l to 5.5 ? ?? 0.3 ? 0.3 v 2.0 ?? 0.4 ? 0.4 2.5 ?? 0.5 ? 0.5 3.0 ?? 0.6 ? 0.6 3.6 ?? 0.8 ? 0.8 v ihc high level input voltage (i/o vcc ) 1.65 to v cc 1.8 ? 1.6 ?? 1.6 ? v 2.5 2.3 ?? 2.3 ? 3.0 2.7 ?? 2.7 ? 3.6 3.3 ?? 3.3 ? 4.3 3.5 ?? 3.5 ? 5.5 4.2 ?? 4.2 ? v ilc low level input voltage (i/o vcc ) 1.65 - 2.5 3 - 5.5 ? ??? 0.3 ? v 2.7 - 3.6 3.6 - 5.5 ??? 0.5 ? v ih-oe high level input voltage (oe) 1.65 v l to 5.5 ? 1.0 ?? 1.0 ? v 2.0 1.2 ?? 1.2 ? 2.5 1.4 ?? 1.4 ? 3.0 1.6 ?? 1.6 ? 3.6 2.0 ?? 2.0 ?
electrical characteristics st2349i 8/20 docid024623 rev 1 symbol parameter v l v cc test conditions value unit t a = 25 c -40 to 85 c min. typ. max. min. max. v il-oe low level input voltage (oe) 1.65 v l to 5.5 ? ?? 0.33 ? 0.33 v 2.0 ?? 0.40 ? 0.40 2.5 ?? 0.50 ? 0.50 3.0 ?? 0.60 ? 0.60 3.6 ?? 0.75 ? 0.75 v oll low level output voltage (i/o vl ) 1.65 to 3.6 v l to 5.5 io = 1.0 ma i/o vcc ?? 0.15 v ?? 0.40 ? 0.40 v v olc low level output voltage (i/o vcc ) 1.65 to 3.6 v l to 5.5 io = 1.0 ma i/o vl ?? 0.15 v ?? 0.40 ? 0.40 v i oe control input leakage current (oe) 1.65 to 3.6 v l to 5.5 v oe =gnd or v l ?? 0.1 ? 0.1 a i io_lkg high impedance leakage current (i/o vl , i/o vcc ) 1.65 to 3.6 v l to 5.5 oe = gnd ?? 0.1 ? 0.1 a i qvcc quiescent supply current v cc 1.65 to 3.6 v l to 5.5 only pull-up resistor connected to i/o ? 66.5 ? 8a i qvl quiescent supply current v l 1.65 to 3.6 v l to 5.5 only pull-up resistor connected to i/o ? 0.01 0.1 ? 1a i z-vcc high impedance quiescent supply current v cc 1.65 to 3.6 v l to 5.5 oe = gnd; only pull-up resistor connected to i/o ? 66.5 ? 8a i z-vl high impedance quiescent supply current v l 1.65 to 3.6 v l to 5.5 oe = gnd; only pull-up resistor connected to i/o ? 0.01 0.1 ? 1a table 6. dc characteristics (continued)
docid024623 rev 1 9/20 st2349i electrical characteristics 5.2 ac characteristics 5.2.1 device driven by open drain driver note: the r up of 4.7 k ? is an effective r pull-up value. sinc e the device has an integrated 10 k ? pull-up resistor, an effective value of 4.7 k ? is obtained by adding an external 8.9 k ? pull-up resistor. load c l =15pf; r up =4.7k ? ; driver t r =t f ? 2 ns over temperature range -40 c to 85 c. table 7. ac characteristics - test conditions: v l = 1.65 ? 1.8 v symbol parameter v cc =1.8 ? 2.5 v v cc =2.7 ? 3.6 v v cc =4.3 ? 5.5 v unit min. max. min. max. min. max. t rvcc rise time i/o vcc ? 80 ? 60 ? 45 ns t fvcc fall time i/o vcc ? 23.2 ? 33.9 ? 53.3 ns t rvl rise time i/o vl ? 60 ? 45 ? 35 ns t fvl fall time i/o vl ? 16.4 ? 17.6 ? 16.9 ns t i/ovl-vcc propagation delay time i/o vl-lh to i/o vcc-lh i/o vl-hl to i/o vcc-hl t plh ? 3.4 ? 2.0 ? 2.0 ns t phl ? 13.9 ? 19.1 ? 30.2 t i/ovcc-vl propagation delay time i/o vcc-lh to i/o vl-lh i/o vcc-hl to i/o vl-lh t plh ? 2.0 ? 2.0 ? 2.6 ns t phl ? 8.6 ? 9.0 ? 9.5 t pzl t pzh t plz t phz output enable and disable time en ? 10 ? 10 ? 10 ns dis ? 40 ? 40 ? 40 d r data rate (1) ? 1.8 ? 2.2 ? 3.4 mhz 1. the data rate is guaranteed based on the condition that the output i/o signal rise/fall time is le ss than 15% of the input i/ o signal period; the input i/o signal is at 50% duty cycle and the output i/o signal duty cycle deviation not less than 30%. table 8. ac characteristics - test conditions: v l =2.5 ? 2.7 v symbol parameter v cc =2.7 ? 3.6 v v cc =4.3 ? 5.5 v unit min. max. min. max. t rvcc rise time i/o vcc ? 70.0 ? 50 ns t fvcc fall time i/o vcc ? 14.8 ? 19.1 ns t rvl rise time i/o vl ? 50.0 ? 35 ns t fvl fall time i/o vl ? 9.8 ? 10 ns t i/ovl-vcc propagation delay time i/o vl-lh to i/o vcc-lh i/o vl-hl to i/o vcc-hl t plh ? 2.0 ? 2.0 ns t phl ? 8.2 ? 11.6
electrical characteristics st2349i 10/20 docid024623 rev 1 symbol parameter v cc =2.7 ? 3.6 v v cc =4.3 ? 5.5 v unit min. max. min. max. t i/ovcc-vl propagation delay time i/o vcc-lh to i/o vl-lh i/o vcc-hl to i/o vl-lh t plh ? 2.0 ? 2.0 ns t phl ? 5.3 ? 5.9 t pzl t pzh t plz t phz output enable and disable time en ? 6 ? 6 ns dis ? 40 ? 40 d r data rate (1) ? 2.2 ? 3.0 mhz 1. the data rate is guaranteed based on the condition that the output i/o signal rise/fall time is less than 15% of the input i/ o signal period; the input i/o signal is at 50% duty cycle and the output i/o signal duty cycle deviation not less than 30%. table 9. ac characteristics - test conditions: v l = 2.7 ? 3.6 v symbol parameter v cc = 4.3 ? 5.5 v unit min. max. t rvcc rise time i/o vcc ? 55.0 ns t fvcc fall time i/o vcc ? 17.2 ns t rvl rise time i/o vl ? 40.0 ns t fvl fall time i/o vl ? 9.7 ns t i/ovl-vcc propagation delay time i/o vl-lh to i/o vcc-lh i/o vl-hl to i/o vcc-hl t plh ? 2.0 ns t phl ? 10.6 t i/ovcc-vl propagation delay time i/o vcc-lh to i/o vl-lh i/o vcc-hl to i/o vl-hl t plh ? 2.0 ns t phl ? 4.8 t pzl t pzh t plz t phz output enable and disable time en ? 6 ns dis ? 40 d r data rate (1) ?? 3.0 mhz 1. the data rate is guaranteed based on the condition that the output i/o signal rise/fall time is less than 15% of the input i/ o signal period; the input i/o signal is at 50% duty cycle and the output i/o signal duty cycle deviation not less than 30%. table 8. ac characteristics - test conditions: v l =2.5 ? 2.7 v (continued)
docid024623 rev 1 11/20 st2349i electrical characteristics 5.2.2 device driven by totem pole driver load c l =15pf; r up =10k ? ; driver t r =t f ?? 2 ns) over temperature range -40 c to 85 c. table 10. ac characterist ics - test conditions: v l =1.65 ? 1.8 v symbol parameter v cc =1.8?2.5v v cc =2.7?3.6v v cc =4.3?5.5v unit min. max. min. max. min. max. t rvcc rise time i/o vcc ? 7.2 ? 4.6 ? 1.4 ns t fvcc fall time i/o vcc ? 23.2 ? 33.9 ? 53.3 ns t rvl rise time i/o vl ? 5.9 ? 5.7 ? 5.5 ns t fvl fall time i/o vl ? 16.4 ? 17.6 ? 16.9 ns t i/ovl- vcc propagation delay time i/o vl-lh to i/o vcc-lh i/o vl-hl to i/o vcc-hl t plh ? 5.5 ? 4.1 ? 3.6 ns t phl ? 13.9 ? 19.1 ? 30.2 t i/ovcc- vl propagation delay time i/o vcc-lh to i/o vl-lh i/o vcc-hl to i/o vl-hl t plh ? 4.5 ? 3.9 ? 3.6 ns t phl ? 8.6 ? 9 ? 9.5 t pzl t pzh t plz t phz output enable and disable time en ? 10 ? 10 ? 10 ns dis ? 40 ? 40 ? 40 d r data rate (1) ? 6.4 ? 4.5 ? 3mhz 1. the data rate is guaranteed based on the condition that the output i/o signal rise/fall time is less than 15% of the input i/ o signal period; the input i/o signal is at 50% duty cycle and the output i/o signal duty cycle deviation not less than 30%. table 11. ac characteristics - test conditions: v l =2.5 ? 2.7 v symbol parameter v cc =2.7 ?? 3.6 v v cc =4.3 ?? 5.5 v unit min. max. min. max. t rvcc rise time i/o vcc ? 3.8 ? 2.8 ns t fvcc fall time i/o vcc ? 14.8 ? 19.1 ns t rvl rise time i/o vl ? 3.3 ? 3.2 ns t fvl fall time i/o vl ? 9.8 ? 10.0 ns t i/ovl-vcc propagation delay time i/o vl-lh to i/o vcc-lh i/o vl-hl to i/o vcc-hl t plh ? 3.2 ? 2.8 ns t phl ? 8.2 ? 11.6 t i/ovcc-vl propagation delay time i/o vcc-lh to i/o vl-lh i/o vcc-hl to i/o vl-hl t plh ? 2.6 ? 2.0 ns t phl ? 5.3 ? 5.9
electrical characteristics st2349i 12/20 docid024623 rev 1 symbol parameter v cc =2.7 ?? 3.6 v v cc =4.3 ?? 5.5 v unit min. max. min. max. t pzl t pzh t plz t phz output enable and disable time en ? 6 ? 6 ns dis ? 40 ? 40 d r data rate (1) ? 9 ? 6.8 mhz 1. the data rate is guaranteed based on the condition that the output i/o signal rise/fall time is less than 15% of the input i/ o signal period; the input i/o signal is at 50% duty cycle and the output i/o signa l duty cycle deviation not less than 30%. table 11. ac characteristics - test conditions: v l =2.5 ? 2.7 v (continued) table 12. ac characteristics - test conditions: v l =2.7 ? 3.6 v symbol parameter v cc =4.3 ? 5.5 v unit min. max. t rvcc rise time i/o vcc ? 2.9 ns t fvcc fall time i/o vcc ? 17.2 ns t rvl rise time i/o vl ? 3.0 ns t fvl fall time i/o vl ? 9.7 ns t i/ovl-vcc propagation delay time i/o vl-lh to i/o vcc-lh i/o vl-hl to i/o vcc-hl t plh -2.7 ns t phl -10.6 t i/ovcc-vl propagation delay time i/o vcc-lh to i/o vl-lh i/o vcc-hl to i/o vl-hl t plh -1.9ns t phl -4.8ns t pzl t pzh t plz t phz output enable and disable time en - 6 ns dis - 40 d r data rate (1) -7.2mhz 1. the data rate is guaranteed based on the condition that the out put i/o signal rise/fall time is less than 15% of the input i/ o signal period; the input i/o signal is at 50% duty cycle and t he output i/o signal duty cycle deviation not less than 30%.
docid024623 rev 1 13/20 st2349i test circuit 6 test circuit figure 4. test circuit note: the pull-up resistors shown in the above test circuit are optional and are only needed if total pull-up on either end of the level translator needs to be lower than 10 k ? . in applications where 10 k ? ? is sufficient, the external pull- up resistor is not required. table 13. test circuit switches test switch driving i/o vl driving i/o vcc open drain driving t plh , t phl open open open table 14. waveform symbol value symbol driving i/o vl driving i/o vcc 1.8 v ?? v l ? v cc ?? 2.5 v 3.3 v ?? v l ? v cc ?? 5.0 v 1.8 v ?? v l ? v cc ?? 2.5 v 3.3v ?? v l ? v cc ?? 5.0 v v ih v l v l v cc v cc v im 50% v l 50% v l 50% v cc 50% v cc v om 50% v cc 50% v cc 50% v l 50% v l v x v ol +0.15 v v ol +0.3 v v ol +0.15 v v ol +0.3 v v y v oh -0.15 v v oh -0.3 v v oh -0.15 v v oh -0.3 v cs14021 pulse generator d.u.t c l v l v cc open gnd v cc v cc v l v l r up r up
test circuit st2349i 14/20 docid024623 rev 1 figure 5. waveform - propagation delay (f = 1 mhz; 50% duty cycle) figure 6. waveform - output enable and disable time (f = 1 mhz; 50% duty cycle)
docid024623 rev 1 15/20 st2349i package information 7 package information in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack specifications, grade definitions a nd product status are available at: www.st.com . ecopack is an st trademark. figure 7. package outline for qfn16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch 1. drawing is not to scale. 2. dimensions are in millimeters. ) # )
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package information st2349i 16/20 docid024623 rev 1 figure 8. footprint recommendations for qf n16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch 1. drawing is not to scale. 2. dimensions are in millimeters. table 15. package mechanical data for qfn16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch symbol dimensions (mm) typ. min. max. a 0.55 0.45 0.60 a1 0.02 0 0.05 b 0.20 0.15 0.25 d 2.60 2.50 2.70 e 1.80 1.70 1.90 e 0.40 ?? l 0.40 0.35 0.45

docid024623 rev 1 17/20 st2349i package information 1. 10 sprocket hole pitch cumulative tolerance ? 0.20. figure 9. carrier tape for qfn16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch ?
package information st2349i 18/20 docid024623 rev 1 figure 10. reel information for qfn16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch 1. drawing is not to scale. 2. dimensions are in millimeters. ? ? 5hf\fohorjr 2 ? 'hwdlorislqkroh vfdoh ? +roh ? +roh 2 ?lqfk 2 ? 2 ? 2 ? +roh +roh 7 pp 7 pp
docid024623 rev 1 19/20 st2349i revision history 8 revision history table 16. document revision history date revision changes 06-may-2013 1 initial release.
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