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LT1039CN Datasheet(PDF) 3 Page - Texas Instruments |
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LT1039CN Datasheet(HTML) 3 Page - Texas Instruments |
3 / 7 page LT1039 TRIPLE EIA232 LINE TRANSCEIVER SLLS105B − D3627, FEBRUARY 1991 − REVISED JANUARY 1992 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001 2−3 Terminal Functions PIN DESCRIPTION NAME NO. DESCRIPTION BIAS 2 Keeps receiver 1 alive while the LT1039 is in the shutdown mode. Leave BIAS open when not in use. D1IN, D2IN, D3IN 15, 13, 11 Line driver inputs. Operate properly on TTL or CMOS levels. Output valid from VI = (VDD −) + (2 to 15 V). Connect to 5 V when not used. D1OUT, D2OUT, D3OUT 4, 6, 8 Line driver outputs GND 10 Ground ON/OFF 17 Shuts down entire circuit. Cannot be left open. If VIL is at or near 0.8 V, significant settling time may be required. R1IN, R2IN, R3IN 3, 5, 7 Receiver inputs. Input impedance is normally 30 k Ω. Accepts EIA-232 voltage levels and has 0.4 V of hysteresis to provide noise immunity. R1OUT, R2OUT, R3OUT 16, 14, 12 Receiver outputs with TTL/CMOS voltage levels VDD + 1 Positive supply voltage for driver VDD − 9 Negative supply voltage for driver VCC 18 5-V supply voltage for receivers absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage range, VDD+ (see Note 1) 0 V to 15 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supply voltage range, VDD− 0 V to − 15 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supply voltage, VCC 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range, driver input VDD− to 25 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . receiver input ±30 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range, ON/OFF 0 V to 12 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output voltage range, driver output VDD+ −30 V to VDD− + 30 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Duration of output short circuit at (or below) TA = 25°C (to ±30 V, see Note 2) unlimited . . . . . . . . . . . . . . . . . . Continuous total dissipation See Dissipation Rating Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range, TA 0 °C to 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range −65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NOTES: 1. All voltage values, except differential voltages, are with respect to the GND terminal. 2. The output may be shorted to either supply. Temperature and/or supply voltages must be limited to ensure that the maximum dissipation rating is not exceeded. DISSIPATION RATING TABLE PACKAGE TA ≤ 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING DW 1025 mW 8.2 mW/ °C 656 mW N 1150 mW 9.2 mW/ °C 736 mW |
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