mdu14 doc #97042 data delay devices, inc. 1 12/15/97 3 mt. prospect ave. clifton, nj 07013 quad, ecl-interfaced fixed delay line (series mdu14) features packages four independent delay lines fits 24-pin (400mil) dip socket auto-insertable input & outputs fully 100k-ecl interfaced & buffered functional description the mdu14-series device is a 4-in-1 digitally buffered delay line. the signal inputs (i1-i4) are reproduced at the outputs (o1-o4), shifted in time by an amount determined by the device dash number (see table). the delay lines function completely independently of each other. series specifications minimum input pulse width: 40% of total delay output rise time: 2ns typical supply voltage: -5vdc 5% power dissipation: 500mw typical (no load) operating temperature: 0 to 85 c temp. coefficient of total delay: 100 ppm/ c 100% vcc gnd i1 i2 i3 functional block diagram 100% 100% o3 o2 o1 i4 100% o4 1997 data delay devices data delay devices, inc. 3 24 22 20 19 18 16 13 1 3 5 6 7 9 11 gnd o1 o2 gnd gnd o3 o4 i1 i2 i3 gnd vee i4 gnd 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 gnd n/c o1 n/c o2 gnd gnd n/c o3 n/c o4 n/c i1 n/c i2 n/c i3 gnd vee n/c i4 n/c n/c gnd mdu14-xx dip mdu14-xxm military dip ddu14-xxc4 smd ddu14-xxmc4 mil smd pin descriptions i1-i4 signal inputs o1-o4 signal outputs vee -5 volts gnd ground dash number specifications part number total delay (ns) mdu14-2 2.0 1.0 mdu14-2.5 2.5 1.0 mdu14-3 3.0 1.0 mdu14-4 4.0 1.0 mdu14-5 5.0 1.0 mdu14-6 6.0 1.0 mdu14-7 7.0 1.0 mdu14-8 8.0 1.0 mdu14-9 9.0 1.0 mdu14-10 10.0 1.0 mdu14-12.5 12.5 1.0 mdu14-15 15.0 1.0 mdu14-20 20.0 1.0 mdu14-25 25.0 1.2 note: any dash number between 2 and 25 not shown is also available.
mdu14 doc #97042 data delay devices, inc. 2 12/15/97 tel: 973-773-2299 fax: 973-773-9672 http:/ /www.datadelay.com application notes high frequency response the mdu14 tolerances are guaranteed for input pulse widths and periods greater than those specified in the test conditions. although the device will function properly for pulse widths as small as 40% of the total delay and periods as small as 80% of the total delay (for a symmetric input), the delays may deviate from their values at low frequency. however, for a given input condition, the deviation will be repeatable from pulse to pulse. contact technical support at data delay devices if your application requires device testing at a specific input condition. power supply bypassing the mdu14 relies on a stable power supply to produce repeatable delays within the stated tolerances. a 0.1uf capacitor from vee to gnd, located as close as possible to the vee pin, is recommended. a wide vee trace and a clean ground plane should be used. device specifications table 1: absolute maximum ratings parameter symbol min max units notes dc supply voltage v ee -7.0 0.3 v input pin voltage v in v ee - 0.3 0.3 v storage temperature t str g -55 150 c lead temperature t lead 300 c 10 sec table 2: dc electrical characteristics (0c to 85c) parameter symbol min typ max units notes high level output voltage v oh -1.025 -0.880 v v ih = max,50 w to -2v low level output voltage v ol -1.810 -1.620 v v il = min, 50 w to -2v high level input voltage v ih -1.165 -0.880 v low level input voltage v il -1.810 -1.475 v high level input current i ih 340 m a v ih = max low level input current i il 0.5 m a v il = min
mdu14 doc #97042 data delay devices, inc. 3 12/15/97 3 mt. prospect ave. clifton, nj 07013 package dimensions 19 18 20 22 mdu14-xx (commercial dip) mdu14-xxm (military dip) .130 .030 1.300 max. 1 6 .300 max. .018 typ. .530 max. .400 typ. .012 typ. 1.100 typ. .015 typ. .100 typ. 11 13 24 5 3 7 9 16 mdu14-xxc4 (commercial smd) mdu14-xxmc4 (military smd) 1.280 .020 .882 .005 .020 typ. .040 typ. .100 .090 1.100 .280 max. .590 max. .010 .002 .050 .010 .710 .005 .007 .005 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
mdu14 doc #97042 data delay devices, inc. 4 12/15/97 tel: 973-773-2299 fax: 973-773-9672 http:/ /www.datadelay.com delay line automated testing test conditions input: output: ambient temperature: 25 o c 3 o c load: 50 w to -2v supply voltage (vcc): -5.0v 0.1v c load : 5pf 10% input pulse: standard 10kh ecl threshold: (v oh + v ol ) / 2 levels (rising & falling) source impedance: 50 w max. rise/fall time: 2.0 ns max. (measured between 20% and 80%) pulse width: pw in = 1.5 x total delay period: per in = 10 x total delay note: the above conditions are for test only and do not in any way restrict the operation of the device. o1 trig in ref test setup device under test (dut) oscilloscope pulse generator o2 o3 out trig i1 i2 i3 o4 i4 timing diagram for testing t rise t fall per in pw in t rise t fall 20% 20% 50% 50% 80% 80% 50% 50% v ih v il v oh v ol input signal output signal
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