LT1780 Linear Technology, LT1780 Datasheet
LT1780
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LT1780 Summary of contents
Page 1
... LT1181A, LT1280A/LT1281A and LT1381 for applications which require the utmost ESD protection. The LT1781 is available in 16-pin DIP,SO and SW pack- ages. The LT1780 is supplied in 18-pin DIP and SW packages for applications which require SHUTDOWN. , LTC and LT are registered trademarks of Linear Technology Corporation. TransZorb is a registered trademark of General Instruments, GSI. ...
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... V Output – V Output Supply Current (V ) (Note 3 Supply Current When OFF (V ) SHUTDOWN (Note 4) LT1780 Only CC Supply Rise Time 0.1 F SHUTDOWN to Turn-On LT1780 Only ON/OFF Pin Thresholds Input Low Level (Device SHUTDOWN) Input High Level (Device Enabled) ON/OFF Pin Current 0V V Oscillator Frequency ...
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... Note 6: For receiver delay measurements, C set between the receiver’s input logic threshold and the output transition to standard TTL/CMOS logic threshold (t to 0.8V). LT1780/LT1781 MIN TYP MAX UNITS 5 20 ...
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... LT1780/LT1781 W U TYPICAL PERFOR A Driver Maximum Output Voltage vs Load Capacitance 8.0 7.5 7.0 20k BAUD 6.5 60k BAUD 6.0 120k BAUD 5.5 5 LOAD CAPACITANCE (nF) 1780 • G01 Receiver Input Thresholds 3.00 2.75 2.50 2.25 INPUT HIGH 2.00 1.75 1.50 INPUT LOW 1.25 1.00 0.75 0.50 50 –55 – TEMPERATURE ( C) ON/OFF Thresholds 3.0 2.5 2.0 ON THRESHOLD 1.5 1.0 OFF THRESHOLD ...
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... ON/OFF PIN CE C HARA TERISTICS C = 30V = –30V 125 75 100 1780 • G08 – 125 75 100 1780 • G10 DRIVER OUTPUT C L DRIVER OUTPUT 1780 • G12 LT1780/LT1781 Driver Short-Circuit Current ISC 20 15 – ISC –55 – 100 TEMPERATURE ( C) 1780 • ...
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... GND: Ground Pin. ON/OFF: A TTL/CMOS Compatible Operating Mode Con- trol. A logic low puts the LT1780 in SHUTDOWN mode. Supply current drops to zero and both driver and receiver outputs assume a high impedance state. A logic high fully enables the device ...
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... U ESD PROTECTIO The RS232 line inputs of the LT1780/LT1781 have on-chip protection from ESD transients up to 15kV air gap and 8kV contact tested to IEC-1000-4-2 test methods. The protection structures act to divert the static discharge safely to system ground. In order for the ESD protection to ...
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... LT1780/LT1781 PACKAGE DESCRIPTIO 0.300 – 0.325 (7.620 – 8.255) 0.009 – 0.015 (0.229 – 0.381) +0.035 0.325 –0.015 +0.889 8.255 –0.381 *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) 0.300 – 0.325 (7.620 – ...
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... NOTE 0.093 – 0.104 45 (2.362 – 2.642) 0 – 8 TYP 0.050 (1.270) TYP 0.014 – 0.019 (0.356 – 0.482) TYP LT1780/LT1781 0.398 – 0.413 0.394 – 0.419 (10.007 – 10.643 0.037 – 0.045 (0.940 – 1.143) 0.004 – ...
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... LT1780/LT1781 PACKAGE DESCRIPTIO 0.291 – 0.299** (7.391 – 7.595) 0.010 – 0.029 45 (0.254 – 0.737) 0.009 – 0.013 NOTE 1 (0.229 – 0.330) 0.016 – 0.050 (0.406 – 1.270) NOTE: 1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS. ...
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... DWG # 05-08-1610 0.228 – 0.244 (5.791 – 6.197 0.053 – 0.069 (1.346 – 1.752) 0 – 8 TYP 0.014 – 0.019 (0.355 – 0.483) LT1780/LT1781 0.386 – 0.394* (9.804 – 10.008 0.150 – 0.157** (3.810 – 3.988) 5 ...
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... Low Power RS232 2Driver/2Receiver Transceiver LTC1387 Single 5V RS232/RS485 Multiprotocol Transceiver Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com Supporting an LT1039 (Triple Driver/Receiver LT1780 8 TTL INPUT RS232 OUTPUT 15 RS232 OUTPUT TTL INPUT TTL INPUT 14 RS232 INPUT TTL OUTPUT 5k ...