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august 2009 doc id 15918 rev 1 1/21 21 ST2189 8-bit dual supply level translat or without direction control pin features 46 mhz: 92 mbps data transfer when v cca = 3.6 v bidirectional level translation without direction control pin wide voltage range of 1.65 v to 3.6 v for both v cca and v ccb configurable voltage translation: ?v cca can be v ccb or v cca can be v ccb partial power down support - when v ccb is grounded, all th e outputs will autom atically go to high impedance. low quiescent current (5 a) esd performance: ? 4 kv hbm (human body model) applications low voltage system level translation mobile phones other mobile devices description the ST2189 is an 8-bit dual supply level translator which provides the level shifting capability to allow data transfer in a multi- voltage system. externally applied voltages, v ccb and v cca , set the logic levels on either side of the device. its architecture allows bidirectional level translation without a control pin. the ST2189 accepts v cca from 1.65 v to 3.6 v and v ccb from 1.65 v to 3.6 v, making it ideal for data transfer between low-voltage asics/pld and higher voltage systems. this device has a tri- state output mode which can be used to disable all i/os. in power down mode feature - when v ccb supply is grounded, all i/os go to high impedance automatically, with very low quiescent current on v cca supply. qfn20 (1.8 x 3.2 mm) table 1. device summary order code package packing ST2189qtr qfn20 (3.2 x 1.8 mm) tape and reel www.st.com
pin settings ST2189 2/21 doc id 15918 rev 1 1 pin settings 1.1 pin connection figure 1. pin connection (top through view) 1.2 pin description table 2. pin description pin number type side symbol name and function 1 i/o v cca a1 input/output 1. referenced to v cca 2 i/o v cca a2 input/output 2. referenced to v cca 3 i/o v cca a3 input/output 3. referenced to v cca 4 i/o v cca a4 input/output 4. referenced to v cca 5-v cca oe output enabled. pull oe low to put all output to tri-state mode. referenced to v cca 6-v cca v cca a port supply voltage. v cca v ccb or v cca v ccb 7 i/o v cca a5 input/output 5. referenced to v cca
ST2189 pin settings doc id 15918 rev 1 3/21 8 i/o v cca a6 input/output 6. referenced to v cca 9 i/o v cca a7 input/output 7. referenced to v cca 10 i/o v cca a8 input/output 8. referenced to v cca 11 i/o v ccb b8 input/output 8. referenced to v ccb 12 i/o v ccb b7 input/output 7. referenced to v ccb 13 i/o v ccb b6 input/output 6. referenced to v ccb 14 i/o v ccb b5 input/output 5. referenced to v ccb 15 - v ccb v ccb b port supply voltage. v ccb v cca or v ccb v cca 16 - - gnd ground 17 i/o v ccb b4 input/output 4. referenced to v ccb 18 i/o v ccb b3 input/output 3. referenced to v ccb 19 i/o v ccb b2 input/output 2. referenced to v ccb 20 i/o v ccb b1 input/output 1. referenced to v ccb table 2. pin description (continued) pin number type side symbol name and function
logic diagram ST2189 4/21 doc id 15918 rev 1 2 logic diagram figure 2. logic block diagram
ST2189 logic diagram doc id 15918 rev 1 5/21 2.1 device block diagram figure 3. ST2189 block diagram figure 4. application block diagram
supplementary notes ST2189 6/21 doc id 15918 rev 1 3 supplementary notes 3.1 driver requirement it must be ensured that the driver is able to source and sink a minimum of 1ma current on both sides of the device. the device requires th e driver to source/sink a maximum current of (v cc /4) ma to/from the weak 4 k output buffer in order to change the state of the output. 3.2 load driving capability to support the level translation without direction pin architecture, the one-shot transistor at the output side is only turned on during state transition. after the one-shot transistor is turned off, only the 4 k pull-up/down resistor maintains the state of the output. as a result, resistive load or pull-up resistor less than 50 k is not recommended. 3.3 ensuring low current co nsumption during off state the oe pin can be tied to the enable signal which is driving the enable pin of the slave device to ensure that the device will turn off and put all i/os to tri-st ate mode whenever the slave device is not needed. on the event that the enable signal driving into the slave device is active low, the signal going into the oe pi n for ST2189 (active high) needs to be inverted accordingly. alternatively, a pull-down resistor can be added to the v ccb supply. this will ensure that the v ccb supply does not float whenever the supply is turned off. all the i/os go to high impedance automatically when this happens. 3.4 truth table table 3. truth table enable bidirectional input/output oe i/o vccb i/o vcca h (1) 1. high level v cca power supply referred. h (2) 2. high level v ccb power supply referred. h (1) h (1) ll l high-z (3) 3. z = high impedance. high-z (3)
ST2189 maximum ratings doc id 15918 rev 1 7/21 4 maximum ratings stressing the device above the rating listed in the ?absolute maximum ratings? table 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 the operating sections of this specification is not imp lied. exposure to absolute ma ximum rating conditions for extended periods may affect device reliability. 4.1 recommended operating conditions table 4. absolute maximum ratings symbol parameter value unit v cca supply voltage -0.3 to 4.6 v v ccb supply voltage -0.3 to 4.6 v v oe dc control intput voltage -0.3 to 4.6 v v i/ovcca dc i/o vcca input voltage (oe = gnd or v cca ) -0.3 to 4.6 v v i/ovccb dc i/o vccb input voltage (oe = gnd or v cca ) -0.3 to 4.6 v i ik dc input diode current -20 ma i i/ovcca dc output current 25 ma i i/ovccb dc output current 25 ma t stg storage temperature -65 to 150 c t l lead temperature (10 seconds) 300 c esd electrostatic discharge protection (hbm) 4 kv table 5. recommended operating conditions symbol parameter min. type max. unit v cca supply voltage 1.65 - 3.6 v v ccb supply voltage 1.65 - 3.6 v v i input voltage (oe output enable pin,v cca power supply reference) 0-v cca v v i/ovcca i/o vcca voltage 0 - v cca v v i/ovccb i/o vccb voltage 0 - v ccb v t op operating temperature -40 - 85 c dt/dv input rise and fall time - - 1 ns/v
electrical characteristics ST2189 8/21 doc id 15918 rev 1 5 electrical characteristics device electrical characteristics over reco mmended operating conditions (unless otherwise noted). all typical values are at t a = 25 c. table 6. dc characteristics symbol parameter v cca v ccb test condition value unit t a =25c -40 to 85c min max min max v iha high level input voltage (i/o vcca ) 1.65 1.65 to 3.6 1.2 - 1.2 - v 1.8 1.3 - 1.3 - 2.5 1.65 - 1.65 - 3.0 2.1 - 2.1 - 3.6 2.6 - 2.6 - v ila low level input voltage (i/o vcca) 1.65 1.65 to 3.6 -0.3-0.3 v 1.8 - 0.4 - 0.4 2.5 - 0.55 - 0.55 3.0 - 0.85 - 0.85 3.6 - 0.95 - 0.95 v ihb high level input voltage (i/o vccb ) 1.65 to 3.6 1.65 1.2 - 1.2 - v 1.8 1.3 - 1.3 - 2.5 1.65 - 1.65 - 3.0 2.1 - 2.1 - 3.6 2.6 - 2.6 - v ilb low level input voltage (i/o vccb ) 1.65 to 3.6 1.65 - 0.3 - 0.3 v 1.8 - 0.4 - 0.4 2.5 - 0.55 - 0.55 3.0 - 0.85 - 0.85 3.6 - 0.95 - 0.95 v ih-oe high level input voltage (oe) 1.65 1.65 to 3.6 1.2 - 1.2 - v 1.8 1.3 - 1.3 - 2.5 1.4 - 1.4 - 3.0 1.65 - 1.65 - 3.6 2.1 - 2.1 -
ST2189 electrical characteristics doc id 15918 rev 1 9/21 symbol parameter v cca v ccb test condition value unit t a =25c -40 to 85c min max min max v il-oe low level input voltage (oe) 1.65 1.65 to 3.6 -0.3-0.3 v 1.8 - 0.4 - 0.4 2.5 - 0.55 - 0.55 3.0 - 0.85 - 0.85 3.6 - 0.95 - 0.95 v oha high level output voltage (i/o vcca ) 1.65 to 3.6 1.65 to 3.6 io= -60 a 0.7 v cca - 0.7 v cca -v v ola low level output voltage (i/o vcca ) io=+60a-0.4-0.4v v ohb high level output voltage (i/o vccb ) 1.65 to 3.6 1.65 to 3.6 io= -60 a 0.7 v ccb - 0.7 v ccb -v v olb low level output voltage (i/o vccb ) io=+60a - 0.4 - 0.4 v i oe control input leakage current (oe) 1.65 to 3.6 1.65 to 3.6 v i = gnd or v cca -0.2- 2a i io_lkg high impedance i/o leakage current (i/o vcca , i/o vccb ) 1.65 to 3.6 1.65 to 3.6 oe = gnd; i/o vcca = high i/o vccb = low -0.2- 2a oe = gnd i/o vcca = low, i/o vccb = high -0.2- 2a i qvccb quiescent supply current v ccb 1.65 to 3.6 1.65 to 3.6 oe = v cca i/o = hi-z -0.5- 5a i qvcca quiescent supply current v cca 1.65 to 3.6 1.65 to 3.6 oe = v cca i/o = hi-z -5-7 a 1.65 to 3.6 0-0.3-3 i oe- vccb high impedance quiescent supply current v ccb 1.65 to 3.6 1.65 to 3.6 oe = gnd i/o = hi-z -0.5- 5a table 6. dc characteristics (continued)
electrical characteristics ST2189 10/21 doc id 15918 rev 1 5.1 ac characteristics symbol parameter v cca v ccb test condition value unit t a =25c -40 to 85c min max min max i oe-vcca high impedance quiescent supply current v cca 1.65 to 3.6 1.65 to 3.6 oe = gnd i/o = hi-z -0.5- 5 a 1.65 to 3.6 0-0.3-3 table 6. dc characteristics (continued) table 7. for test conditions: v cca = 1.65 v (load c l = 15 pf; driver tr = t f 2ns) overtemperature range -40 c to 85 c symbol parameter v ccb = 1.65 v - 2.5 v v ccb = 2.7v - 3.6 v unit min max min max t rvccb output rise time i/o vccb -2.7-1.6ns t fvccb output fall time i/o vccb -1.8-1.2ns t rvcca output rise time i/o vcca -3.0-3.0ns t fvcca output fall time i/o vcca -1.8-1.6ns t i/ovcca- vccb propagation delay time i/o vcca-lh to i/o vccb-lh i/o vcca-hl to i/o vccb-hl t plh -5.9-4.5ns t phl -4.0-4.0ns t i/ovccb- vcca propagation delay time i/o vccb-lh to i/o vcca-lh i/o vccb-hl to i/o vcca-hl t plh -6.2-5.8ns t phl -4.3-3.7ns t pzl t pzh output enable time - 20 - 20 ns t plz t phz output disable time - 160 - 180 ns d r data rate (1) clock 28 - 32 - mhz data 56 - 64 - mbps 1. data rates are measured at worst case condition when all 8 channels are switch ing at the same time. data rate is guaranteed based on the condition that output i/o signal rise/fall ti me is less than 15% of peri od of input i/o signal; input i /o signal is at 50% duty -cycle and output i/o si gnal duty-cycle deviation is less than 50% 10%.
ST2189 electrical characteristics doc id 15918 rev 1 11/21 table 8. for test conditions: v cca = 2.5 v (load c l = 15 pf; driver t r = t f 2 ns) overtemperature range -40 c to 85 c symbol parameter v ccb = 1.65v - 2.5 v v ccb = 2.7v - 3.6 v unit min max min max t rvccb output rise time i/o vccb -2.5-1.4ns t fvccb output fall time i/o vccb -1.6-1.2ns t rvcca output rise time i/o vcca -2.1-2.0ns t fvcca output fall time i/o vcca -1.4-1.4ns t i/ovcca- vccb propagation delay time i/o vcca-lh to i/o vccb-lh i/o vcca-hl to i/o vccb-hl t plh -4.7-3.3ns t phl -2.9-2.6ns t i/ovccb- vcca propagation delay time i/o vccb-lh to i/o vcca-lh i/o vccb-hl to i/o vcca-hl t plh -4.3-3.8ns t phl -3.3-2.8ns t pzl t pzh output enable time - 25 - 12 ns t plz t phz output disable time - 150 - 180 ns d r data rate (1) clock 40 - 42 - mhz data 80 - 84 - mbps 1. data rates are measured at worst case condition when all 8 channels are switching at the same time. data rate is guaranteed based on the condition that output i/o signal rise/fall ti me is less than 15% of peri od of input i/o signal; input i /o signal is at 50% duty -cycle and output i/o si gnal duty-cycle deviation is less than 50% 10%.
electrical characteristics ST2189 12/21 doc id 15918 rev 1 5.2 capacitance characteristics table 9. for test conditions: v cca = 3.6 v (load c l = 15 pf; driver t r = t f 2 ns) overtemperature range -40 c to 85 c symbol parameter v ccb = 1.65 v - 2.5 v v ccb = 2.7 v - 3.6 v unit min max min max t rvccb output rise time i/o vccb -2.5-1.4ns t fvccb output fall time i/o vccb -1.5-1.2ns t rvcca output rise time i/o vcca -1.7-1.7ns t fvcca output fall time i/o vcca -1.4-1.4ns t i/ovcca- vccb propagation delay time i/o vcca-lh to i/o vccb-lh i/o vcca-hl to i/o vccb-hl t plh -4.4-3.0ns t phl -2.6-2.2ns t i/ovccb- vcca propagation delay time i/o vccb-lh to i/o vcca-lh i/o vccb-hl to i/o vcca-hl t plh -3.8-3.0ns t phl -3.0-2.3ns t pzl t pzh output enable time - 20 - 10 ns t plz t phz output disable time - 150 - 160 ns d r data rate (1) clock 43 - 46 - mhz data 86 - 92 - mbps 1. data rates are measured at worst case condition when all 8 channels are switching at the same time. data rate is guaranteed based on the condition that output i/o signal rise/fall ti me is less than 15% of peri od of input i/o signal; input i /o signal is at 50% duty -cycle and output i/o si gnal duty-cycle deviation is less than 50% 10%. table 10. capacitance characteristics symbol parameter value unit v cca (v) v ccb (v) t a = 25 c -40 to 85 c min typ max min max c inb input capacitance open open - 12 - - - pf c i/o-vcca input/output capacitance for v cca -side 1.65 - 3.6 1.65 - 3.6 - 12 - - - pf c i/o-vccb input/output capacitance for v ccb -side 1.65 - 3.6 1.65 - 3.6 - 12 - - - pf
ST2189 test circuit doc id 15918 rev 1 13/21 6 test circuit figure 5. test circuit table 11. test circuit switches test c l r 1 switch t plh , t phl 15 pf 20 k open t r , t f 15 pf 20 k open t pzl , t plz 15 pf 20 k v cca or v ccb t pzh , t phz 15 pf 20 k gnd c s 14021v2 p u l s e gener a tor d.u.t c l v cca v ccb open gnd v cca v ccb r 1
waveforms ST2189 14/21 doc id 15918 rev 1 7 waveforms figure 6. waveform - propagation delay (f = 1 mhz, 50% duty cycle) table 12. waveform symbol value symbol i/o vcca -> i/o vccb i/o vccb -> i/o vcca v ccb 1.65 v - 2.5v v ccb 2.7 v - 3.6 v v cca 1.65 v - 2.5 v v cca 2.7 v - 3.6 v v ih v cca v cca v ccb v ccb v im 50% v cca 50% v cca 50% v ccb 50% v ccb v om 50% v ccb 50% v ccb 50% v cca 50% v cca v x v ol + 0.15v v ol + 0.3v v ol + 0.15v v ol + 0.3v v y v oh - 0.15v v oh - 0.3v v oh - 0.15v v oh - 0.3v t f t r
ST2189 waveforms doc id 15918 rev 1 15/21 figure 7. waveform - output enable/disable (f = 50 khz, 50% duty cycle) v cca or v ccb am04047v1 r t f t
package information ST2189 16/21 doc id 15918 rev 1 8 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 and product status are available at: www.st.com . ecopack ? is an st trademark. figure 8. package outline for qfn20 (1.8 x 3.2 x 0.5 mm) - pitch 0.4 mm
ST2189 package information doc id 15918 rev 1 17/21 figure 9. footprint recommendation for qfn20 (1.8 x 3.2 x 0.5 mm) - pitch 0.4 mm table 13. mechanical data for qfn20 (1.8 x 3.2 x 0.5 mm) - pitch 0.4 mm symbol milimeters nom min max a 0.50 0.45 0.55 a1 0.02 0 0.05 a3 0.127 - - b 0.20 0.15 0.25 d 3.20 3.15 3.25 e 1.80 1.75 1.85 e0.40 - - l 0.40 0.35 0.45
package information ST2189 18/21 doc id 15918 rev 1 figure 10. carrier tape for qfn20 (1.8 x 3.2 x 0.5 mm) - pitch 0.4 mm
ST2189 package information doc id 15918 rev 1 19/21 figure 11. reel information for qfn20 (1.8 x 3.2 x 0.5 mm) - pitch 0.4 mm
revision history ST2189 20/21 doc id 15918 rev 1 9 revision history table 14. document revision history date rev changes 31-jul-2009 1 initial release.
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