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MAX3238IDBRQ1 Datasheet(PDF) 8 Page - Texas Instruments |
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MAX3238IDBRQ1 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 15 page MAX3238Q1 3V TO 5.5V MULTICHANNEL RS232 LINE DRIVER/RECEIVER WITH ±15kV ESD (HBM) PROTECTION SLLS569B − MAY 2003 − REVISED APRIL 2008 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION 50 Ω TEST CIRCUIT VOLTAGE WAVEFORMS 0 V 3 V Output Input VOL VOH tPLH Generator (see Note B) RL 3 V FORCEOFF RS-232 Output tPHL CL (see Note A) 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. 50% 50% 1.5 V 1.5 V Figure 2. Driver Pulse Skew TEST CIRCUIT VOLTAGE WAVEFORMS 50 Ω −3 V 3 V Output Input VOL VOH tPHL Generator (see Note B) tPLH Output CL (see Note A) 3 V or 0 V FORCEON NOTES: A. CL includes probe and jig capacitance. B. The pulse generator has the following characteristics: ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns. 3 V FORCEOFF 1.5 V 1.5 V 50% 50% Figure 3. Receiver Propagation Delay Times TEST CIRCUIT 50 Ω Generator (see Note B) 3 V or 0 V 3 V or 0 V FORCEON FORCEOFF NOTES: A. CL includes probe and jig capacitance. B. The pulse generator has the following characteristics: ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns. C. tPLZ and tPHZ are the same as tdis. D. tPZL and tPZH are the same as ten. RL S1 VCC GND CL (see Note A) Output VOLTAGE WAVEFORMS Output VOL VOH 3 V 0 V 0.3 V Output Input 0.3 V 1.5 V 1.5 V 50% tPHZ (S1 at GND) tPLZ (S1 at VCC) 50% tPZL (S1 at VCC) Figure 4. Receiver Enable and Disable Times |
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