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LTC487IN Datasheet(PDF) 8 Page - Linear Technology |
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LTC487IN Datasheet(HTML) 8 Page - Linear Technology |
8 / 8 page LTC487 8 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7487 (408) 432-1900 q FAX: (408) 434-0507 q TELEX: 499-3977 LTC487 • TA13 120 Ω DRIVER Z Y Figure 12. ESD Protection with TransZorbs S APPLICATI I FOR ATIO PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted. N Package, 16-Lead Plastic DIP S Package, 16-Lead Plastic SOL N16 0594 0.260 ± 0.010* (6.604 ± 0.254) 0.770* (19.558) MAX 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0.015 (0.381) MIN 0.125 (3.175) MIN 0.130 ± 0.005 (3.302 ± 0.127) 0.065 (1.651) TYP 0.045 – 0.065 (1.143 – 1.651) 0.018 ± 0.003 (0.457 ± 0.076) 0.045 ± 0.015 (1.143 ± 0.381) 0.100 ± 0.010 (2.540 ± 0.254) 0.009 – 0.015 (0.229 – 0.381) 0.300 – 0.325 (7.620 – 8.255) 0.325 +0.025 –0.015 +0.635 –0.381 8.255 () *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTURSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm). SOL16 0494 NOTE: 1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS. THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS. NOTE 1 0.398 – 0.413 (10.109 – 10.490) (NOTE 2) 16 15 14 13 12 11 10 9 1 23 4 5 6 78 0.394 – 0.419 (10.007 – 10.643) 0.037 – 0.045 (0.940 – 1.143) 0.004 – 0.012 (0.102 – 0.305) 0.093 – 0.104 (2.362 – 2.642) 0.050 (1.270) TYP 0.014 – 0.019 (0.356 – 0.482) TYP 0° – 8° TYP NOTE 1 0.005 (0.127) RAD MIN 0.009 – 0.013 (0.229 – 0.330) 0.016 – 0.050 (0.406 – 1.270) 0.291 – 0.299 (7.391 – 7.595) (NOTE 2) × 45° 0.010 – 0.029 (0.254 – 0.737) 2. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm). A TransZorb is a silicon transient voltage suppressor that has exceptional surge handling capabilities, fast response time, and low series resistance. They are available from General Semiconductor Industries and come in a variety of breakdown voltages and prices. Be sure to pick a break- down voltage higher than the common-mode voltage required for your application (typically 12V). Also, don’t forget to check how much the added parasitic capacitance will load down the bus. APPLICATI TYPICAL RS232 to RS485 Level Translator with Hysteresis LTC487 • TA14 HYSTERESIS = 10k Ω • ≈ VY - VZ ———— R 19k ———— R 120 Ω DRIVER Y Z R = 220k 10k RS232 IN 5.6k 1/4 LTC487 © LINEAR TECHNOLOGY CORPORATION 1994 LT/GP 0894 0K REV A • PRINTED IN USA |
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