LT1381 Linear Technology, LT1381 Datasheet
LT1381
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LT1381 Summary of contents
Page 1
... L even while driving heavy capacitive loads. New ESD struc- tures on the chip allow the LT1381 to survive multiple 10kV strikes, eliminating the need for costly TransZorbs on the RS232 line pins. Driver outputs are protected from overload and can be shorted to ground 25V without damage ...
Page 2
... Short-Circuit Duration + V ................................................................... 30 sec – V ................................................................... 30 sec Driver Output .............................................. Indefinite Receiver Output .......................................... Indefinite Operating Temperature Range LT1381C ................................................. LT1381I .............................................. – Storage Temperature Range ................ – 150 C Lead Temperature (Soldering, 10 sec)................. 300 C ELECTRICAL C HARA TERISTICS C PARAMETER CONDITIONS Power Supply Generator + V Output – ...
Page 3
... 10V. Driver Output Voltage 5. 4. OUTPUT HIGH 0 OUTPUT LOW – 4. – 5.5V CC –6 –8 –10 –55 – 100 TEMPERATURE (°C) LT1381 • TPC03 UNITS 125 3 ...
Page 4
... Slew Rate vs Load Capacitance 100 125 CAPACITANCE (nF) – V Compliance Curve – – – LOAD CURRENT (mA) LT1381 • TPC11 = 30V = –30V 75 125 100 LT1381 • TPC06 +SLEW RATE –SLEW RATE 4 5 LT1381 • TPC09 ...
Page 5
... V + 25V ESD PROTECTIO The RS232 line inputs of the LT1381 have on-chip protec- tion from ESD transients up to 10kV. The protection structures act to divert the static discharge safely to system ground. In order for the ESD protection to function effectively, the power supply and ground pins of the circuit must be connected to ground through low impedances ...
Page 6
... LT1381 IN 0.1 F RS232 0 FLOATING GROUND SYSTEM GROUND Data Transmission Across Isolation Barrier RS232 INPUT ISOLATOR OUTPUT 1381 TA04 LT1121 RS232 INPUT RS232 OUTPUT 15 LT1381 • TA03 5V 10% 1381 TA05 ...
Page 7
... S Package 16-Lead Plastic Small Outline (Narrow 0.150) (LTC 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) LT1381 0.770* (19.558) MAX 0.045 – 0.065 (1.143 – ...
Page 8
... OUTPUTS Sharing Capacitors + 0.1 F TTL INPUT + TTL INPUT TTL OUTPUT TTL OUTPUT 5V INPUT –12V OUT RS232 OUTPUT RS232 OUTPUT RS232 INPUT RS232 INPUT LT1381 • TA06 LT1381 6 – RS232 OUTPUT 10 7 RS232 OUTPUT 12 13 RS232 INPUT 5k ...