1 sy100s325 micrel, inc.m9999-051607 hbwhelp@micrel.com or (408) 955-1690 low-power hex ecl-to-ttl translator description features max. propagation delay of 3.7ns i ee min. of C37ma ttl outputs extended supply voltage option:v ee = C4.2v to C5.5v 25% faster than national's 325 differential inputs with built-in offset voltage and temperature compensation for improvednoise immunity v bb output for single-ended use internal 75k input pull-down resistors function and pinout compatible with fairchild f100k available in 28-pin plcc package the sy100s325 are hex translators for converting 100k ecl logic levels to ttl logic levels. inputs can beused as inverting, non-inverting or differential receivers. an internal reference voltage generator provides v bb for single-ended operation or for use in schmitt triggerapplications. all inputs have 75k pull-down resistors. the outputs will go low when the inputs are either openor have the same potential. when used in single-ended operation, the apparent input threshold of the true inputs is 20mv to 40mv higher(positive) than the threshold of the complementary inputs. the v ttl and v ee power may be applied in either order. sy100s325 pin names pin function d 0 Cd 5 data inputs d 0 Cd 5 inverting data inputs q 0 Cq 5 data outputs v ees v ee substrate v ttl ttl v cc power supply v cca v cco for ecl outputs rev.: i amendment: /0 issue date: may 2007 block diagram d 0 q 0 d 0 d 1 q 1 d 1 d 2 q 2 d 2 d 3 q 3 d 3 d 4 q 4 d 4 d 5 q 5 d 5 v bb downloaded from: http:///
2 sy100s325 micrel, inc.m9999-051607 hbwhelp@micrel.com or (408) 955-1690 package/ordering information ordering information package operating package lead part number type range marking finish sy100s325jc j28-1 commercial sy100s325jc sn-pb sy100s325jctr (1) j28-1 commercial sy100s325jc sn-pb SY100S325JY (2) j28-1 industrial SY100S325JY with matte-tin pb-free bar-line indicator SY100S325JYtr (1, 2) j28-1 industrial SY100S325JY with matte-tin pb-free bar-line indicator notes: 1. tape and reel. 2. pb-free package is recommended for new designs. 28-pin plcc (j28-1) 18 17 16 15 14 13 12 567891011 26 27 28 1 2 3 4 top view plcc j28-1 25 24 23 22 21 20 19 v ttl v cc v cc v cc q 2 q 1 v ttl d 0 v ees d 1 q 0 d 0 d 1 d 2 d 4 d 3 v ees v ee v bb d 2 d 3 v ees d 5 q 4 q 3 q 5 d 4 d 5 downloaded from: http:///
3 sy100s325 micrel, inc.m9999-051607 hbwhelp@micrel.com or (408) 955-1690 ac electrical characteristics v ee = C 4.2v to C 5.5v unless otherwise specified, v cc = v cca = gnd, v ttl = +4.5v to +5.5v symbol parameter min. typ. max. unit condition t plh propagation delay 900 2100 2900 ps c l = 15pf, figure 2 t phl data to output t plh propagation delay 900 3100 3700 ps c l = 50pf, figure 2 t phl data to output dc electrical characteristics v ee = C 4.2v to C 4.8v unless otherwise specified, v cc =v cca = gnd, v ttl = +4.5v to +5.5v symbol parameter min. typ. max. unit condition v oh output high voltage 2.5 vi oh = C2.0ma v in = v ih (max.) v ol output low voltage 0.5 v i ol = 24ma v in = v il (min.) v diff input voltage differential 150 mv required for full output swing v cm common mode voltage 1.0 v permissible v cm with respect to v bb i ih input high current 350 av in = v ih (max.), d 0 Cd 5 = v bb , d 0 C d 5 = v il (min.) i il input low current 0.5 av in = v ih (min.), d 0 Cd 5 = v bb i os output short circuit current C 150 C 80 C 60 ma v out = gnd i ee v ee power supply current C 37 C 24 C 17 ma d 0 Cd 5 = v bb i ttl v ttl power supply current 42 65 ma d 0 Cd 5 = v bb v bb ouptut reference voltage C 1380 C 1320 C 1260 mv i vbb = C2.1ma v ih single-ended input high C 1165 C 880 mv guaranteed high signal for all inputs (with one voltage tied to v bb ) v il single-ended input low C 1810 C 1475 mv guaranteed low signal for all inputs (with one voltage tied to v bb ) downloaded from: http:///
4 sy100s325 micrel, inc.m9999-051607 hbwhelp@micrel.com or (408) 955-1690 switching waveform figure 1. propagation delay t plh input attenuatedoutput 50% 0.7 0.1 ns 0.7 0.1 ns C0.95v 20% 80% 50% C1.69v t phl test circuits scope chan b v bb v ttl v ee v cc 0.1f open r t c l r t 450 l2 pulse generator scope chan a l1 figure 2. ac test circuit for 15pf loading notes:v cc = 0v, v ee = C 4.5v, v ttl = +5v l1 and l2 = equal length 50 impedance lines r t = 50 terminator internal to scope decoupling 0.1 f from gnd to v cc , v ee and v ttl all unused outputs are loaded with 500 to gnd c l = fixture and stray capacitance = 3pf note:v ee = C 4.2v to C 5.5v unless otherwise specified, v cc = v cca = gnd downloaded from: http:///
5 sy100s325 micrel, inc.m9999-051607 hbwhelp@micrel.com or (408) 955-1690 28-pin plcc (j28-1) rev. 03 micrel, inc. 2180 fortune drive san jose, ca 95131 usa tel + 1 (408) 944-0800 fax + 1 (408) 474-1000 web http://www.micrel.com the information furnished by micrel in this data sheet is believed to be accurate and reliable. however, no responsibility is assumed by micrel for its use. micrel reserves the right to change circuitry and specifications at any time without notification to the customer. micrel products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. a purchaser s use or sale of micrel products for use in life support appliances, devices or systems is at purchasers own risk and purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2006 micrel, incorporated. downloaded from: http:///
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