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january 2007 rev 1 1/17 17 features high speed: ?t pd = 4.4ns (max.) at t a = 85c ?v ccb = 3.0v ?v cca = 2.3v low power dissipation: ?i cca = i ccb = 5a (max.) at t a = 85c balanced propagation delays: ?t plh t phl power down protections on inputs and outputs 26 ? series resistor on a-side operating voltage range: ?v cca (opr) = 1.4v to v ccb ?v ccb (opr) = 1.4v to 3.6v latch-up performance exceeds 500ma (jesd17) esd performance: ? hbm > 2kv (mil std 883 method 3015); r o hs compliant for tfbga25 package description the ST6G3237 is a dual supply low voltage cmos level translator for sd/minisd/t-flash fabricated with sub-micron silicon gate and five- layer metal wiring c 2 mos technology. designed for use as an interface between a 3.3v bus and a 2.5v or 1.8v bus in a mixed 3.3v/1.8v, 3.3v/2.5v and 2.5v/1.8v supply systems, it achieves high speed operation while ma intaining the cmos low power dissipation. the a port is designed to track v cca. the b port is designed to track v ccb . this ic is intended for two-way asynchronous communication between data buses and the direction of data transmission is determined by cmd-dir/data0-dir/dat123-dir inputs. the b-port interfaces with the 3v bus, the a-port with the 2.5v and 1.8v bus. all inputs are equipped with protection circuits against static discharge, giving them 2kv esd immunity and transient excess voltage. tfbga25 tssop20 ST6G3237 dual supply level translat or for sd/ minisd / t-flash www.st.com order codes part number package packaging ST6G3237ttr tssop20 tape and reel ST6G3237tbr tfbga25 tape and reel
contents ST6G3237 2/17 contents 1 logic diagram and truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.1 dc electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.2 ac electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.3 output slew rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.4 capacitance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5 test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
ST6G3237 logic diagram and truth table 3/17 1 logic diagram and truth table figure 1. logic diagram table 1. truth table function output cmd- dir dat0- dir dat12 3-dir cmd.h cmd dat0.h dat0 dat1.h dat2.h dat3.h dat1 dat2 dat3 hxxi oxxx xb = a lxxo i xxx xa = b xhx x x i o x xb = a xlx x x o i x xa = b xxhx xxx i ob = a xxlx xxxo ia = b
pin settings ST6G3237 4/17 2 pin settings 2.1 pin connections figure 2. pin connections (top through view)
ST6G3237 pin settings 5/17 2.2 pin descriptions cmd, command is a bidirectional line. the host and card drivers are operating in push-pull. dat0-3, data lines are bi-directional lines. host and card drivers are operating in push-pull mode. clk, clock is a host to card signal. clk operates in push-pull mode. feedback (return) clock is feedback clock signal from level shifter to host for controlling delays. table 2. pin descriptions pin n o tfbga25 pin n o tssop20 type side symbol name and function a2 12 i a-side cmd-dir command direction high = a to b low = b to a d2 9 i/o a-side cmd.h a-side command d4 13 i/o b-side cmd b-side command a3 11 i a-side dat0-dir data direction high = a to b (write) low = b to a (read) d1 8 i/o a-side dat0.h data input / output d5 14 i/o b-side dat0 data input / output e3 10 i a-side dat123-dir data direction high = a to b (write) low = b to a (read) e1 2 i/o a-side dat1.h data input / output a1 3 i/o a-side dat2.h data input / output b1 4 i/o a-side dat3.h data input / output e5 19 i/o b-side dat1 data input / output a5 18 i/o b-side dat2 data input / output b5 17 i/o b-side dat3 data input / output c1 5 i a-side clk.h clock input c5 16 o b-side clk clock output e2 6 o a-side clk-f clock feedback b3 7 - a-side v cca power supply b4 15 - b-side v ccb power supply c3, c4 1, 20 - - gnd ground (0v) a4, b2, c2, d3, e4 - - - nc no connect
electrical ratings ST6G3237 6/17 3 electrical 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 implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. refer also to the stmicroelectronics sure program and other relevant quality documents. table 3. absolute maximum ratings symbol parameter value unit v cca supply voltage -0.5 to 4.6 v v ccb supply voltage -0.5 to 4.6 v v i dc input voltage -0.5 to 4.6 v v i/oa dc i/o voltage (output disabled) -0.5 to 4.6 v v i/ob dc i/o voltage (output disabled) -0.5 to 4.6 v v i/oa dc output voltage -0.5 to v cca + 0.5 v v i/ob dc output voltage -0.5 to v ccb + 0.5 v i ik dc input diode current -20 ma i ok dc output diode current -50 ma i oa dc output current 50 ma i ob dc output current 50 ma i cca dc v cc or ground current 100 ma i ccb dc v cc or ground current 100 ma p d power dissipation 400 mw t stg storage temperature -65 to +150 c t l lead temperature (10 sec) 260 c table 4. recommended operating conditions symbol parameter value unit v cca supply voltage 1.4 to v ccb v v ccb supply voltage 1.4 to 3.6 v v i input voltage (cmd-dir/dat0-dir/dat123-dir) 0 to v cca v v i/oa i/o voltage 0 to v cca v v i/ob i/o voltage 0 to v ccb v t op operating temperature -40 to +85 c dt/dv input rise and fall time (1) 1. v in from 0.8v to 2.0v at v cc = 3.0v 0 to 10 ns/v
ST6G3237 electrical characteristics 7/17 4 electrical characteristics 4.1 dc electrical characteristics all a-port i/os and control inputs are powered by v cca all b-port i/os are powered by v ccb table 5. dc specifications symbol parameter test conditions value unit vcc (v) t a = 25c -40 to 85c min typ max min max v ih (a port) high level input voltage 1.4 ? 1.95 v cca to 3.6 0.65v cca 0.65v cca v 1.95 ? 2.7 1.7 1.7 2.7 ? 3.6 2.0 2.0 v il (a port) low level input voltage 1.4 ? 1.95 v cca to 3.6 0.35v cca 0.35v cca v 1.95 ? 2.7 0.7 0.7 2.7 ? 3.6 0.8 0.8 v ih (b port) high level input voltage 1.4 to v ccb 1.4 ? 1.95 0.65v ccb 0.65v ccb v 1.95 ? 2.7 1.7 1.7 2.7 ? 3.6 2.0 2.0 v il (b port) low level input voltage 1.4 to v ccb 1.4 ? 1.95 0.35v ccb 0.35v ccb v 1.95 ? 2.7 0.7 0.7 2.7 ? 3.6 0.8 0.8
electrical characteristics ST6G3237 8/17 table 6. dc specifications symbol parameter test conditions value unit v cca (v) v ccb (v) t a = 25c -40 to 85c min typ max min max v oh (a port) high level output voltage 1.4-3.6 1.4-3.6 i oh = -100 a1.30 v 1.4 1.4 i oh = -1 ma 1.20 1.65 1.65 i oh = -2 ma 1.40 2.3 2.3 i oh = -4 ma 1.90 33 i oh = -8 ma 2.45 v ol (a port) low level output voltage 1.4-3.6 1.4-3.6 i ol = 100 a0.10 v 1.4 1.4 i ol = 1 ma 0.20 1.65 1.65 i ol = 2 ma 0.25 2.3 2.3 i ol = 4 ma 0.40 33 i ol = 8 ma 0.55 v oh (b port) high level output voltage 1.4-3.6 1.4-3.6 i oh = -100 a1.30 v 1.4 1.4 i oh = -2 ma 1.25 1.65 1.65 i oh = -4 ma 1.45 2.3 2.3 i oh = -8 ma 1.90 33i oh = -24 ma 2.45 v ol (b port) low level output voltage 1.4-3.6 1.4-3.6 i ol = 100 a0.10 v 1.4 1.4 i ol = 2 ma 0.15 1.65 1.65 i ol = 4 ma 0.20 2.3 2.3 i ol = 8 ma 0.30 33 i ol = 24 ma 0.55 i ia , i ib input leakage current 2.7 3.6 v i = v cc or gnd 0.1 1 a i off power off leakage current 00 v ia = gnd to 3.6 v ib = gnd to 3.6 1.0 10 a i cca quiescent supply current 1.65 3.6 v ia = v cca or gnd v ib = v ccb or gnd 0.5 5 a 1.80 2.9 2.5 3.6 3.0 3.0 i ccb quiescent supply current 1.65 3.6 v ia = v cca or gnd v ib = v ccb or gnd 0.5 5 a 1.80 2.9 2.5 3.6 3.0 3.0 i oz leakage current when i/o are in high-z 3.6 3.6 v ioa = v cca or gnd 0.5 5 a
ST6G3237 electrical characteristics 9/17 4.2 ac electrical characteristics table 7. ac electrical characteristics f = 1mhz, 50% duty cycle, c l = 30pf, r l = 500 ? symbol parameter test condition t a = -40 to 85 c unit v cca =1.8 0.15v v cca =1.8 0.15v v cca =2.5 0.2v v ccb =2.5 0.2v v ccb =3.0 0.3v v ccb =3.0 0.3v min. max. min. max. min. max. t plh t phl propagation delay time a to b (cmd) 1.0 3.7 1.0 3.8 1.0 3.6 ns propagation delay time b to a (cmd) 1.0 3.6 1.0 3.9 1.0 3.6 propagation delay time a to b (clk) 1.0 3.2 1.0 3.4 1.0 3.2 propagation delay time b to a (clk-f) 1.0 7.6 1.0 7.7 1.0 7.5 propagation delay time an to bn (datn) 1.0 6.2 1.0 6.2 1.0 6.2 propagation delay time bn to an (datn) 1.0 5.3 1.0 5.3 1.0 5.3 t pzl t pzh output enable time from an to bn 1.0 2.9 1.0 3.0 1.0 2.9 ns output enable time from bn to an 1.0 4.3 1.0 4.5 1.0 4.2 t plz t phz output disable time from an to bn 1.0 7.8 1.0 8 1.0 7.8 ns output disable time from bn to an 1.0 5.4 1.0 5.5 1.0 5.3 t oslh t oshl output to output skew time (note 1,2) 0.5 0.5 0.5 ns t cdlh t cdhl clock and data skew time 0.5 0.5 0.5 ns f max clock from a to b 52 52 52 mhz from b to a 52 52 52 data from a to b 52 52 52 mbps from b to a 52 52 52
electrical characteristics ST6G3237 10/17 4.3 output slew rate 4.4 capacitance characteristics table 8. output slew rate (f = 1mhz, 50% duty cycle, c l = 30pf, r l = 500 ? ) symbol parameter from to v cca = 1.8v 0.15v v ccb = 3v 0.3v unit min. max. t r rise time 20% 80% 3 ns t f fall time 80% 20% 3 ns table 9. capacitance characteristics symbol parameter test condition value unit v ccb (v) v cca (v) t a = 25 c min. typ. max. c inb input capacitance open open 5 pf c i/o input/output capacitance 3.0 1.8 6 pf c pd (1) 1. c pd is defined as the value of the ic's internal equivalent capacitance whic h is calculated from the operating current consumption without load. (refer to test circuit). average current can be obtained by the following equation. i cc (opr) - c pd x v cc x f in + i cc /16 (per circuit) power dissipation capacitance 3.0 2.5 f=10mhz 29 pf 3.0 1.8 29
ST6G3237 test circuit 11/17 5 test circuit figure 3. test circuit c l = 30pf or equivalent (includes jig and probe capacitance) r l = r 1 = 500 ? or equivalent r t = z out of pulse generator (typically 50 ? ) table 10. test values test switch t plh , t phl open t pz l, t plz (v cc = 3.0 to 3.6v) 6v t pzl , t plz (v cc = 2.3 to 2.7v or v cc = 1.6 to 1.95v) 2v cc t pzh , t phz gnd table 11. waveform symbol value symbol v cc 3.0 to 3.6v 2.3 to 2.7v 1.65 to 1.95v v ih v cc v cc v cc v m 1.5v v cc /2 v cc /2 v x v ol + 0.3v v ol + 0.15v v ol + 0.15v v y v ol - 0.3v v ol - 0.15v v ol - 0.15v
test circuit ST6G3237 12/17 figure 4. waveform - propagation delay (f = 1mhz, 50% duty cycle)
ST6G3237 package mechanical data 13/17 6 package mechanical data in order to meet environmental requirements, st offers these devices in ecopack? packages. these packages have a lead-free second level interconnect. the category of second level interconnect is marked on the package and on the inner box label, in compliance with jedec standard jesd97. the maximum ratings related to soldering conditions are also marked on the inner box label. ecopack is an st trademark. ecopack specifications are available at: www.st.com
package mechanical data ST6G3237 14/17 table 12. tfbga25 mechanical data dim. mm. mils min. typ. max. min. typ. max. a 1.0 1.1 1.16 39.4 43.3 45.7 a1 0.25 9.8 a2 0.78 0.86 30.7 33.9 b 0.25 3.0 3.1 114.2 118.1 122.0 d 2.9 3.0 3.1 114.2 118.1 122.0 d1 2 78.8 e 2.9 3.0 3.1 114.2 118.1 122.0 e1 2 78.8 e 0.5 19.7 se 0.25 9.8 figure 5. package dimensions
ST6G3237 package mechanical data 15/17 table 13. tssop20 mechanical data dim. mm. mils min. typ. max. min. typ. max. a 1.2 0.047 a1 0.05 0.15 0.002 0.004 0.006 a2 0.8 1 1.05 0.031 0.039 0.041 b 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0079 d 6.4 6.5 6.6 0.252 0.256 0.260 e 6.2 6.4 6.6 0.244 0.252 0.260 e1 4.3 4.4 4.48 0. 169 0.173 0.176 e 0.65 bsc 0.0256 bsc k 0 8 0 8 l 0.45 0.60 0.75 0.018 0.024 0.030 figure 6. package dimensions c e b a2 a e1 d 1 pin 1 identification a1 l k e 0087225c
revision history ST6G3237 16/17 7 revision history table 14. revision history date revision changes 18-jan-2007 1 first release
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