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MAX3243CPWR Datasheet(PDF) 9 Page - Texas Instruments |
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MAX3243CPWR Datasheet(HTML) 9 Page - Texas Instruments |
9 / 18 page MAX3243 3V TO 5.5V MULTICHANNEL RS232 LINE DRIVER/RECEIVER WITH ±15kV ESD (HBM) PROTECTION SLLS350L − APRIL 1999 − REVISED MARCH 2004 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION TEST CIRCUIT VOLTAGE WAVEFORMS 50 Ω 3 V 2.7 V −2.7 V INVALID Output Receiver Input Generator (see Note B) FORCEOFF tvalid ROUT FORCEON Auto- powerdown INVALID DOUT 0 V 0 V −3 V DIN CL = 30 pF (see Note A) VCC 0 V 2.7 V −2.7 V 0.3 V −0.3 V 0 V Valid RS-232 Level, INVALID High Indeterminate Indeterminate If Signal Remains Within This Region For More Than 30 µs, INVALID Is Low† Valid RS-232 Level, INVALID High † Auto-powerdown disables drivers and reduces supply current to 1 µA. ≈V+ 0 V ≈V− V+ VCC ten V− NOTES: A. CL includes probe and jig capacitance. B. The pulse generator has the following characteristics: PRR = 5 kbit/s, ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns. 50% VCC 50% VCC 2.7 V −2.7 V 0.3 V 0.3 V tinvalid Supply Voltages Figure 5. INVALID Propagation Delay Times and Supply Enabling Time |
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