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MAX3243IDBG4 Datasheet(PDF) 7 Page - Texas Instruments |
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MAX3243IDBG4 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 18 page MAX3243 3V TO 5.5V MULTICHANNEL RS232 LINE DRIVER/RECEIVER WITH ±15kV ESD (HBM) PROTECTION SLLS350L − APRIL 1999 − REVISED MARCH 2004 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 AUTO-POWERDOWN SECTION electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 5) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VT+(valid) Receiver input threshold for INVALID high-level output voltage FORCEON = GND, FORCEOFF = VCC 2.7 V VT−(valid) Receiver input threshold for INVALID high-level output voltage FORCEON = GND, FORCEOFF = VCC −2.7 V VT(invalid) Receiver input threshold for INVALID low-level output voltage FORCEON = GND, FORCEOFF = VCC −0.3 0.3 V VOH INVALID high-level output voltage IOH = −1 mA, FORCEON = GND, FORCEOFF = VCC VCC−0.6 V VOL INVALID low-level output voltage IOL = 1.6 mA, FORCEON = GND, FORCEOFF = VCC 0.4 V † All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C. switching characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 5) PARAMETER MIN TYP† MAX UNIT tvalid Propagation delay time, low- to high-level output 1 µs tinvalid Propagation delay time, high- to low-level output 30 µs ten Supply enable time 100 µs † All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C. PARAMETER MEASUREMENT INFORMATION 50 Ω TEST CIRCUIT VOLTAGE WAVEFORMS −3 V −3 V 3 V 3 V 0 V 3 V Output Input VOL VOH tTLH Generator (see Note B) RL 3 V FORCEOFF RS-232 Output tTHL CL (see Note A) SR(tr) + 6V t THL or tTLH NOTES: A. CL includes probe and jig capacitance. B. The pulse generator has the following characteristics: PRR = 250 kbit/s, ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns. Figure 1. Driver Slew Rate |
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