1 sy100s391 micrel, inc. m9999-042307 hbwhelp@micrel.com or (408) 955-1690 features operates from a single +5v supply differential pecl outputs function and pinout compatible with fairchild f100k available in 28-pin plcc packages description the sy100s391 is a hex ttl-to-pecl translator for converting ttl logic levels to 100k logic levels. the unique feature of this translator is the ability to do this translation using only one +5v supply. the differential outputs allow each circuit to be used as an inverting/non-inverting translator, or as a differential line driver. a common enable (e), when low, holds all inverting outputs high and all non-inverting inputs low. the sy100s391 is ideal for those mixed pecl/ttl applications which only have a +5v supply available. when used in the differential mode, the s391, due to its high common mode rejection, overcomes voltage gradients between the ttl and pecl ground systems. rev.: i amendment: /0 issue date: april 2007 sy100s391 low-power hex ttl-to-pecl translator pin function d 0 ?d 5 data inputs (ttl) q 0 ?q 5 data outputs (pecl) q 0 ?q 5 inverting data outputs (pecl) e enable input (ttl) v cca v cco for ecl outputs pin names block diagram d 0 d 1 d 2 d 3 d 4 d 5 e q 0 q 0 q 1 q 1 q 2 q 2 q 3 q 3 q 4 q 4 q 5 q 5
2 sy100s391 micrel, inc. m9999-042307 hbwhelp@micrel.com or (408) 955-1690 package/ordering information 28-pin plcc (j28-1) ordering information package operating package lead part number type range marking finish sy100s391jc j28-1 commercial sy100s391jc sn-pb sy100s391jctr (1) j28-1 commercial sy100s391jc sn-pb SY100S391JZ (2) j28-1 commercial SY100S391JZ with matte-sn pb-free bar-line indicator SY100S391JZtr (1, 2) j28-1 commercial SY100S391JZ with matte-sn pb-free bar-line indicator notes: 1. tape and reel. 2. pb-free package is recommended for new designs. q 2 v cca v cc v cc d 2 gnd pecl gnd pecl gnd ttl e gnds 4 3 2 1 2 8 2 7 12 13 14 15 16 17 19 11 20 10 21 9 22 8 23 7 24 6 top view plcc j28-1 q 3 d 3 2 6 18 25 5 d 1 d 0 q 0 gnds q 1 q 1 q 0 q 2 q 3 q 5 gnds d 5 d 4 q 4 q 5 q 4 inputs outputs d n eq n q n hhh l lhl h hll h lll h truth table note: 1. h = high voltage level, l = low voltage level logic symbol e d 0 d 1 d 2 d 3 d 4 d 5 q 0 q 0 q 1 q 1 q 2 q 2 q 3 q 3 q 4 q 4 q 5 q 5
3 sy100s391 micrel, inc. m9999-042307 hbwhelp@micrel.com or (408) 955-1690 symbol parameter min. typ. max. unit condition v oh output high voltage v cc 1025 v cc 955 v cc 870 mv v in = v ih (max.) or v il (min.) v ol output low voltage v cc 1890 v cc 1705 v cc 1620 loading with 50 ? to v cc 2v v ohc output high voltage v cc 1035 mv v in = v ih (min.) or v il (max.) corner point high loading with 50 ? to v cc 2v v olc output low voltage v cc 1610 mv corner point low v ih input high voltage 2.0 5.0 v over v ttl , v ee , t a range v il input low voltage 0 0.8 v over v ttl , v ee , t a range i ih input high current 10 av in = +2.7v breakdown current 100 av in = +5.5v, v cc = max. i il input low current d n 0.8 ma v in = +0.5v e 4.2 v cd input clamp diode voltage 1.2 v i in = 18ma i cc v cc supply current 25 69 ma inputs open ttl-to-pecl dc electrical characteristics (1) v cc = +5.0v 10%; gnd = 0v note: 1. the specified limits represent the "worst case" value for the parameter. since these values normally occur at the temperatur e extremes, additional noise immunity and guardbanding can be achieved by decreasing the allowable system operating ranges. conditions for testing shown in the tables are chosen to guarantee operation under "worst case" conditions. v cc = +5.0v 10% ac electrical characteristics t a = 0 ct a = +25 ct a = +85 c symbol parameter min. max. min. max. min. max. unit condition t plh propagation delay 400 1400 400 1400 400 1400 ps t phl data and enable to output t tlh transition time 350 1700 350 1700 350 1700 ps t thl 20% to 80%, 80% to 20% symbol rating value unit ttl input voltage (2) 0.5 to +7.0 v ttl input current (2) 30 to +5.0 v pecl output current 50 v (dc output high) v cc pin potential to ground pin 0.5 to +7.0 v t store storage temperature 65 to +150 ? c t j max. junction temp. ? c ceramic +175 plastic +150 absolute maximum ratings (1) notes: 1. permanent device damage may occur if absolute maximum ratings are exceeded. this is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. exposure to absolute maximum ratlng conditions for extended periods may affect device reliability. 2. either voltage limit or current limit is siffucient to protect inputs. symbol rating value unit t a operating temperature 0 to +85 ? c commercial v cc supply voltage +4.5 to +5.5 v guaranteed operating conditions (1) note: 1. do not exceed.
4 sy100s391 micrel, inc. m9999-042307 hbwhelp@micrel.com or (408) 955-1690 timing diagram propagation delay and transition times 2.5 0.3ns 2.5 0.3ns input 3.0v 1.5v 90% 50% 10% complement t phl t plh 50% output t plh t phl 80% 50% 20% t tlh t thl true
5 sy100s391 micrel, inc. m9999-042307 hbwhelp@micrel.com or (408) 955-1690 test circuit 0.1f 0.1f gndttl v ih 0.1f l 2 l 3 4v 100 50 s/h r t pecl terminator net 2.5f v cc 0.1f gndpecl pulse generator scope chan a r t l 1
6 sy100s391 micrel, inc. m9999-042307 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 datasheet is believed to be accurate and reliable. however, no responsibility is as sumed 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 malfu nction of a product can reasonably be expected to result in personal injury. life support devices or systems are devices or systems that (a) are intend ed 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 inj ury to the user. a purchaser s use or sale of micrel products for use in life support appliances, devices or systems is at purchaser s own risk and purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2006 micrel, incorporated.
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