the "dip series" logic noise filter modules developed by engineered components company has been designed for use in t 2 l systems employing data pulses of either a fixed width or a minimum width. the filter module will produce a ?1? at the output, without significant change in width, only when a ?1? appears at the input for greater than the specified pulse width; all shorter pulses will be suppressed. this operation will effectively eliminate sources of stray noise pulses and should prove particularly effective in eliminating transients created by crosstalk from leading edges of fast rise time pulses. the fnfm-ttl is offered in 20 pulse widths from 5ns to 200ns for optimum noise pulse rejection in varous systems. tolerance on pulse width recognition is maintained as shown in the accompanying part number table, when tested under the "test conditions" shown. temperature coefficient is less than 800ppm/ 0 c over the operating temperature range of 0 to +70 0 c. these noise filter modules are of hybrid construction utilizing the proven technologies of active integrated circuitry and of passive networks utilizing capacitive, inductive and resistive elements. the mtbf on these modules, when calculated per mil-hdbk-217 for a 50 0 c ground fixed environment, is in excess of 3.5 million hours. these ?dip series? modules are packaged in a 14-pin dip housing, molded of flame-proof diallyl phthalate per mil-m-14, type sdg-f, and are fully encapsulated in epoxy resin. leads meet the solderability requirements of mil-std-202, method 208. corner standoffs on the housing of the thru-hole lead version and lead design of the surface mount versions provide positive standoff from the printed circuit board to permit solder-fillet formation and flush cleaning of solder-flux residues for improved reliability. marking consists of the manufacturer's name, logo (ec 2 ), part number, terminal identification and date code of manufacture. all marking is applied by silk screen process using white epoxy paint in accordance with mil-std-130, to meet the permanency of identifi- cation required by mil-std-202, method 215. design design design design design note s s s s s ? t t t t t 2 2 2 2 2 l l l l l fast input and output input and output input and output input and output input and output pulse width detection stable and precise pulse width detection stable and precise pulse width detection stable and precise pulse width detection stable and precise pulse width detection stable and precise 14-pin dip package 14-pin dip package 14-pin dip package 14-pin dip package 14-pin dip package leads ? thru-hole, j, gull wing or tucked leads ? thru-hole, j, gull wing or tucked leads ? thru-hole, j, gull wing or tucked leads ? thru-hole, j, gull wing or tucked leads ? thru-hole, j, gull wing or tucked available in pulse widths from 5 to 200ns available in pulse widths from 5 to 200ns available in pulse widths from 5 to 200ns available in pulse widths from 5 to 200ns available in pulse widths from 5 to 200ns 8 t 8 t 8 t 8 t 8 t 2 2 2 2 2 l fan-out capacity l fan-out capacity l fan-out capacity l fan-out capacity l fan-out capacity
v cc supply voltage: 4.75 to 5.25v dc v cc supply current: constant "0" in 30ma typical constant "1" in 7ma typical logic 1 input: voltage 2v min.; v cc max. current 2.7v = 20ua max. 5.5v = 1ma max. logic 0 input: voltage .8v max. current ? .6ma max. logic 1 voltage out: 2.7v min. logic 0 voltage out: .5v max. fan out 8 t 2 l loads operating temperature range: 0 to +70 o c storage temperature: ? 55 to +125 o c. pulse width suppression times increase or decrease approximately 2% for a respective increase or decrease of 5% in supply voltage. block diagram is shown below mechanical detail is shown below catalog no. c/091594r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . the output of the module will remain at state ? 0 ? for any transient input pulses shorter than suppress times and will change to state ? 1 ? for pulses longer than pass times. input pulse width is measure at the +1.5 level.
4 9 14 19 24 29 34 39 43 48 58 68 73 78 88 98 123 147 172 196
special modules can be readily manufactured to provide customer specified times for specific applications. 1. all measurements are made at 25 o c. 2. vcc supply voltage is maintained at 5.0v dc. 3. all units are tested using a fast toggle-type positive input pulse and one fast t 2 l load at the output. 4. all units are tested to verify suppress and pass pulse widths, as tabulated in the part number table. .5 .5 .5 .5 6 11 16 21 26 31 36 41 46 51 62 72 77 82 92 102 127 153 178 204 5 10 15 20 25 30 35 40 45 50 60 70 75 80 90 100 125 150 175 200 fnfm-ttl-5 fnfm-ttl-10 fnfm-ttl-15 fnfm-ttl-20 fnfm-ttl-25 fnfm-ttl-30 fnfm-ttl-35 fnfm-ttl-40 fnfm-ttl-45 fnfm-ttl-50 fnfm-ttl-60 fnfm-ttl-70 fnfm-ttl-75 fnfm-ttl-80 fnfm-ttl-90 fnfm-ttl-100 fnfm-ttl-125 fnfm-ttl-150 fnfm-ttl-175 fnfm-ttl-200 part number table suffix part number with g (for gull wing lead), j (for j lead), f (for thru-hole lead) or t (for tucked lead). examples: fnfm-ttl-10g (gull wing), fnfm-ttl-25j (j lead), fnfm-ttl-75f (thru-hole lead) or fnfm-ttl- 80t (tucked lead) operating specifications test conditions test conditions test conditions test conditions test conditions vcc 14 1 ou tp u t x 7 g r ou nd input 8 x x output buffer pulse width detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v 14 out 1 pin no. pin no. in 8 c 7 *thru-hole lead *gull wing lead *j lead *t uc k ed l ead *
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