LT1781
FEATURES s s s s s s s s s s s s s
10m A Max Supply Current ESD Protection to IEC 1000-4-2 Level 4 ±15k V Air Gap, ±8k V Contact Uses Small Capacitors: 0.1µF 120k Baud Operation for RL = 3k, CL = 2500p F 250k Baud Operation for RL = 3k, CL = 1000p F Outputs Withstand ± 30V Without Damage CMOS parable Low Power: 40m W Operates from a Single 5V Supply Rugged Bipolar Design Outputs Assume a High Impedance State When Off or Powered Down Meets All RS232 Specifications Available With or Without Shutdown Absolutely No Latch-up
APPLICATI s s s s s
Portable puters Battery-Powered Systems Power Supply Generator Terminals Modems
TYPICAL APPLICATI
2 0.1µF 4 LT1780 5 0.1µF 6 12 LOGIC INPUTS 7 3
5V INPUT V + OUT 0.1µF V
- OUT 0.1µF
DRIVER OUTPUT RL = 3k CL = 2500p F
RS232 OUTPUT
11 13
8 14 5k
RECEIVER OUTPUT R CL = 50p F
RS232 OUTPUT RS232 INPUT
INPUT
LOGIC OUTPUTS 10 18
9 5k 16
RS232 INPUT
ON/OFF
1780/81
- TA01
Output Waveforms
1780/81
- TA02
LT1780/LT1781...
