LS1240AD1013TR STMicroelectronics, LS1240AD1013TR Datasheet
LS1240AD1013TR
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LS1240AD1013TR Summary of contents
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Features ■ Low current consumption, in order to allow the parallel operation of 4 devices ■ Integrated rectifier bridge with zener diodes to protect against over voltages little external circuitry ■ Tone and switching frequencies adjustable by external components ■ ...
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Block diagram and test circuit 1 Block diagram and test circuit Figure 1. LS1240 block diagram Figure 2. Test circuit 2.72 ⋅ (Hz) 2/9 Telephone Rectifier N.C. line capacitor Rectifier Threshold circuit ...
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LS1240 2 Electrical characteristics Table 1. Absolute maximum ratings Symbol V Calling voltage ( Hz) continuous AB V Calling voltage ( Hz) 5s ON/10s OFF AB DC Supply current T Operating temperature OP Tstg Storage and ...
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Application schematics 3 Application schematics Figure 3. Typical application with buzzer Figure 4. Typical application with loudspeaker (no transformer needed) 4/9 such that ⏐Z ⏐ > 1 ΚΩ LOAD LS1240 ...
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LS1240 4 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect . The category of second Level Interconnect ismarked on the package and on the ...
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Package mechanical data Table 4. Minidip package dimensions Dim 0.356 b1 0.204 Figure 5. Minidip package mechanicla drawing 6/9 mm Min. Typ. Max. 3.32 0.51 1.15 1.65 ...
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LS1240 Table 5. SO8 package dimensions Dim D( F( Figure 6. SO8 mechanical drawing mm Min. Typ. Max. 1.75 0.1 0.25 1.65 0.65 0.85 0.35 0.48 ...
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Ordering information 5 Ordering information Table 6. Order codes Part number LS1240A LS1240AD1 (1) E-LS1240A (1) E-LS1240AD1 ® 1. ECOPACK (see 6 Revision history Table 7. Document revision history Date 15-Jul-1998 23-Aug-2006 8/9 Minidip SO8 Minidip SO8 Chapter 4 ) ...
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... LS1240 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...