9-124 0.3" dual digit numeric led displays ltd-322 series ltd-323 package dimensions features 0.3 inch (7.62mm) digit height continuous uniform segments. choices of five bright colors-algaas red/bright red/ green/yellow/red orange. low power requirement. excellent characters appearance. high contrast. high brightness. wide viewing angle. solid state reliability. common anode or common cathode modles. two digit package simplifies alignments & assembly. leads on 0.1" (2.54mm) centers. categorized for luminous intensity. i.c. compatiable. easy mounting on p.c. board. notes:all dimensions are in millimeters (inches). tolerance: 0.25mm (0.01") unless otherwise noted. devices part no. ltd- description internal circuit diagram bright red green 322p 323p 322g 323g dualplex common cathode, rt. hand decimal dualplex common anode, rt. hand decimal a b pin connection pin no. connection 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. a.ltd-322 b .ltd-323 anode g no pin anode a anode f common cathode (digit 2) anode d anode e anode c anode b common cathode (digit 1) cathode g no pin cathode a cathode f common anode (digit 2) cathode d cathode e cathode c cathode b common anode (digit 1) description the ltd-322/323 series are 0.3 inch (7.62mm) height dual digit displays. all device displays have black face and white segments. the algaas red seven segment displays are designed for appleications requiring low power consumption. they are tested and selected for the excellent low current characteristics to ensure that the segments are matched at low current. drive current as low as 1 ma per segment is available. the algaas red series device utilize led chips which are made from algaas on a non-transparent gaas substrate. the bright red and green series devices utilize led chips which are made from gap on a transparent gap substrate. the yellow, red orange series devices utilize led chips which are made from gaasp on a transparent gap substrate. algaas red 322wc 323wc yellow red orange 322y 323y 322e 323e
9-125 displays internal circuit diagrams a.ltd-322 b.ltd-323 absolute maximum rating at ta=25 electrical/optical characteristics at ta=25 ltd-322wc/323wc parameter symbol min. typ. max. unit tset condition average luminous intensity peak emission wavelength spectral line half-width dominant wavelength forward voltage, per segment reverse current, per segment luminous intensity matching ratio i v p d v f i r i v -m 210 650 697 90 657 2.1 2.6 100 2:1 cd nm nm nm v a i f =10ma i f =20ma i f =20ma i f =20ma i f =20ma v r =5v i f =10ma unit power dissipation per segment peak forward current per segment (1/10 duty cycle, 0.1ms pulse width) continuous forward current per segment derating linear from 25 per segment reverse voltage per segment operating temperature range stroage temperature range solder temperature 1/16 inch below seating plane for 3 seconds at 260 mw ma ma ma/ v -35 to +85 -35 to +85 parameter algaas red bright red green yellow red orange 40 60 15 0.2 5 75 100 25 0.33 5 60 80 20 0.27 5 75 100 25 0.33 5 75 125 30 0.4 5 ltd-322p/323p parameter symbol min. typ. max. unit tset condition average luminous intensity peak emission wavelength spectral line half-width dominant wavelength forward voltage, per segment reverse current, per segment luminous intensity matching ratio i v p d v f i r i v -m 200 600 3100 660 35 638 1.6 1.7 1.8 2.4 100 2:1 cd nm nm nm v a i f =1ma i f =5ma i f =20ma i f =20ma i f =20ma i f =1ma i f =5ma i f =20ma v r =5v i f =10ma
9-126 ltd-322g/323g parameter symbol min. typ. max. unit tset condition average luminous intensity peak emission wavelength spectral line half-width dominant wavelength forward voltage, per segment reverse current, per segment luminous intensity matching ratio i v p d v f i r i v -m 540 1600 565 30 569 2.1 2.6 100 2:1 cd nm nm nm v a i f =10ma i f =20ma i f =20ma i f =20ma i f =20ma v r =5v i f =10ma note: luminous intensity is measured with a light sensor and filter combiuation that approximates the cie (commision internationale de leclairage) eye-response curve. ltd-322y/323y parameter symbol min. typ. max. unit tset condition average luminous intensity peak emission wavelength spectral line half-width dominant wavelength forward voltage, per segment reverse current, per segment luminous intensity matching ratio i v p d v f i r i v -m 500 2000 585 35 588 2.1 2.6 100 2:1 cd nm nm nm v a i f =10ma i f =20ma i f =20ma i f =20ma i f =20ma v r =5v i f =10ma ltd-322e/323e parameter symbol min. typ. max. unit tset condition average luminous intensity peak emission wavelength spectral line half-width dominant wavelength forward voltage, per segment reverse current, per segment luminous intensity matching ratio i v p d v f i r i v -m 500 2000 630 40 621 2.0 2.6 100 2:1 cd nm nm nm v a i f =10ma i f =20ma i f =20ma i f =20ma i f =20ma v r =5v i f =10ma
9-127 displays typical electrical/optical characteristic curves (25 ambient temperature unless otherwise noted)
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