9-73 displays 7.62 5 7 single color & multicolor dot matrix led displays ltp-3057a/3157a 3257aa/3357aa series package dimensions a. ltp-3057a/3157a features 3.0 inch (76.2mm) matrix height. low power requirement. single plane, wide viewing angle. 5 7 array with x-y select. compatible with usascll and ebcdic codes. stackable vertically and horizontally. choices of two matrix orientation. cathode row or cathode column. easy mounting on p.c. board. categorized for luminous intensity. single color displays have the choices of four bright colors-green/yellow/red orange/algaas red. multicolor displays are applicable to three bright colors : green, red orange and yellow (green and red orange mixed) description the ltp-3x57a series are 3.0 inch (76.2mm)matrix height 5 7 dot matrix displays. the ltp-3257aa/3357aa are multicolor applicable displays. the multicolor displays have gray face and white dots. the ltp-3057a/3157a series are single color displays. the green, yellow, red orange and algaas red displays have gray face and white dots. the green series devices utilize led chips which are made from gap on a transparent gap substrate. the yellow and red orange series devices utilize led chips which are made from gaasp on a transparent gap substrate. the algaas red series devices utilize led chips which are made from aigaas on a non-transparent gaas substrate. notes : all dimensions are in millimeters(inches). tolerance : 0.25mm (0.01") unless otherwise noted. devices b. ltp-3257aa/3357aa part no. ltp- package dimension red orange anode column, cathode row cathode column, anode row anode column, cathode row cathode column, anode row 3057ae 3157ae multi color 3257aa 3357aa green 3057ag 3157ag internal circuit diagram description a b c d a a b b algaas red 3057ac 3157ac yellow 3057ay 3157ay
9-74 pin connection pin no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ltp-3157a cathode row 5 cathode row 7 anode column 2 anode column 3 cathode row 4 anode column 5 cathode row 6 cathode row 3 cathode row 1 anode column 4 no connection no connection anode column 1 cathode row 2 connection ltp-3057a anode row 5 anode row 7 cathode column 2 cathode column 3 anode row 4 cathode column 5 anode row 6 anode row 3 anode row 1 cathode column 4 no connection no connection cathode column 1 anode row 2 pin no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 ltp-3257aa anode column 1 green anode column 1 red orange cathode row 7 green cathode row 7 red orange anode column 2 green anode column 2 red orange anode column 3 green anode column 3 red orange cathode row 5 green cathode row 5 red orange cathode row 4 green cathode row 4 red orange cathode row 6 green cathode row 6 red orange anode column 5 green anode column 5 red orange cathode row 1 green cathode row 1 red orange anode column 4 green anode column 4 red orange anode column 3 green anode column 3 red orange cathode row 3 green cathode row 3 red orange cathode row 4 green cathode row 4 red orange cathode row 2 green cathode row 2 red orange connection LTP-3357AA cathode column 1 green cathode column 1 red orange anode row 7 green anode row 7 red orange cathode column 2 green cathode column 2 red orange cathode column 3 green cathode column 3 red orange anode row 5 green anode row 5 red orange anode row 4 green anode row 4 red orange anode row 6 green anode row 6 red orange cathode column 5 green cathode column 5 red orange anode row 1 green anode row 1 red orange cathode column 4 green cathode column 4 red orange cathode column 3 green cathode column 3 red orange anode row 3 green anode row 3 red orange anode row 4 green anode row 4 red orange anode row 2 green anode row 2 red orange
9-75 displays internal circuit diagrams a. ltp-3057a b. ltp-3157a notes : the sign " " stands for two chips in series. c. ltp-3257aa d. LTP-3357AA absolute maximum ratings at ta=25 parameter average power dissipation per dot peak forward current per dot average forward current per dot derating linear from 25 per dot reverse voltage per dot operating temperature range storage temperature range solder temperature 1/16 inch below seating plane for 3 seconds at 260 -35 to +85 -35 to +85 notes : the sign " " stands for green color chips. (two chips in series). the sign " " stands for red orange color chips. (two chips in series) green red orange algaas red 64 90 11 0.15 10 64 90 11 0.15 10 64 110 14 0.19 10 unit mw ma ma ma/ v yellow 60 80 8 0.08 10
9-76 parameter average luminous intensity peak emission wavelength spectral line half-width dominant wavelength forward voltage, any dot reverse current, any dot luminous intensity matching ratio symbol i v p d v f i r i v -m min. 3000 typ. 9600 565 30 569 4.2 6.0 max. 5.2 7.4 100 2:1 unit test condition i p =80ma 1/16 duty i f =20ma i f =20ma i f =20ma i f =20ma i f =80ma v r =10v i f =10ma cd nm nm nm v v a parameter average luminous intensity peak emission wavelength spectral line half-width dominant wavelength forward voltage, any dot reverse current, any dot luminous intensity matching ratio symbol i v p d v f i r i v -m min. 3000 typ. 9600 630 40 621 4 5.2 max. 5.2 6.8 100 2:1 unit test condition i p =80ma 1/16 duty i f =20ma i f =20ma i f =20ma i f =20ma i f =80ma v r =10v i f =10ma cd nm nm nm v v a electrical/optical characteristics at ta=25 ltp-3057ag/3157ag & ltp-3257aa/3357aa (green) ltp-3057ay/3157ay ltp-3057ae/3157ae & ltp-3257aa/3357aa (red orange) test condition i p =80ma 1/16 duty i f =20ma i f =20ma i f =20ma i f =20ma i f =80ma v r =10v i f =10ma parameter average luminous intensity peak emission wavelength spectral line half-width dominant wavelength forward voltage, any dot reverse current, any dot luminous intensity matching ratio symbol i v p d v f i r i v -m min. 11500 typ. 20000 660 35 638 3.6 4 max. 4.8 5.4 100 2:1 unit cd nm nm nm v v a note: luminous intensity is measured with a light sensor and filter combination that approximates the cie (commision internationale de leclairage) eye-response curve. ltp-3057ac/3157ac parameter average luminous intensity peak emission wavelength spectral line half-width dominant wavelength forward voltage, any dot reverse current, any dot luminous intensity matching ratio symbol i v p d v f i r i v -m min. 3000 typ. 9600 585 35 588 4.2 6.0 max. 5.2 7.4 100 2:1 unit test condition i p =80ma 1/16 duty i f =20ma i f =20ma i f =20ma i f =20ma i f =80ma v r =10v i f =10ma cd nm nm nm v v a
9-77 displays typical electrical/optical characteristic curves (25 ambient temperatrue unless otherwise noted)
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