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SN75LP1185DWRE4 Datasheet(PDF) 5 Page - Texas Instruments |
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SN75LP1185DWRE4 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 13 page SN75LP1185 LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS SLLS335A – JANUARY 1999 – REVISED JANUARY 2001 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 driver switching characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT tPHL Propagation delay time, high- to low-level output RL = 3 kΩ to 7 kΩ, CL = 15 pF, See Figure 1 300 800 1600 ns tPLH Propagation delay time, low- to high-level output RL = 3 kΩ to 7 kΩ, CL = 15 pF, See Figure 1 300 800 1600 ns VCC = 5 V, Using VTR = 10%-to-90% transition region, Driver speed = 250 kbit/s, CL = 15 pF, See Note 8 375 2240 tTLH Transition time, low to high level output CC VDD = 12 V, VSS = –12 V, RL 3kΩ to7kΩ Using VTR = ±3 V transition region, Driver speed = 250 kbit/s, CL = 15 pF 200 1500 ns TLH low- to high-level output RL = 3 kΩ to 7 kΩ, See Figure 1 and Note 9 Using VTR = ±2 V transition region, Driver speed = 250 kbit/s, CL = 15 pF 133 1000 Note 9 Using VTR = ±3 V transition region, Driver speed = 125 kbit/s, CL = 2500 pF 2750 VCC = 5 V, Using VTR = 10%-to-90% transition region, Driver speed = 250 kbit/s, CL = 15 pF, See Note 8 375 2240 tTHL Transition time, high to low level output CC VDD = 12 V, VSS = –12 V, RL 3kΩ to7kΩ Using VTR = ±3 V transition region, Driver speed = 250 kbit/s, CL = 15 pF 200 1500 ns THL high- to low-level output RL = 3 kΩ to 7 kΩ, See Figure 1 and Note 9 Using VTR = ± 2 V transition region, Driver speed = 250 kbit/s, CL = 15 pF 133 1000 Note 9 Using VTR = ±3 V transition region, Driver speed = 125 kbit/s, CL = 2500 pF 2750 SR Output slew rate VCC = 5 V, VDD = 12 V, VSS = –12 V Using VTR = ±3 V transition region, Driver speed = 0 to 250 kbit/s, CL = 15 pF 4 20 30 V/ µs NOTES: 8. Equivalent to the SN75C185. The SN75LP1185 output-voltage swing is clamped to about 70% of the typical SN75C185 output-voltage swing, and the specified limits reflect the reduced output swing. 9. Maximum output swing is limited to ±6 V to enable the higher data rates associated with this device and to reduce EMI emissions. receiver electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIT+ Positive-going input threshold voltage See Figure 3 1.6 2 2.55 V VIT– Negative-going input threshold voltage See Figure 3 0.6 1 1.45 V VHYS Input hysteresis, VIT+ VIT– See Figure 3 600 1000 mV VOH High-level output voltage IOH = –1 mA 2.5 3.9 V VOL Low-level output voltage IOL = 2 mA 0.33 0.5 V IIH High level input current VI = 3 V 0.43 0.6 1 mA IIH High-level input current VI = 25 V 3.6 5.1 8.3 mA IIL Low level input current VI = –3 V –0.43 –0.6 –1 mA IIL Low-level input current VI = –25 V –3.6 –5.1 –8.3 mA IOS(H) Short-circuit high-level output current VO = 0, See Figure 5 and Note 7 –20 mA IOS(L) Short-circuit low-level output current VO = VCC, See Figure 5 and Note 7 20 mA RIN Input resistance VI = ±3 V to ±25 V 3 5 7 k Ω NOTE 7: Not more than one output should be shorted at one time. |
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