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SN65C3238EDBR Datasheet(PDF) 11 Page - Texas Instruments |
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SN65C3238EDBR Datasheet(HTML) 11 Page - Texas Instruments |
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11 / 18 page  www.ti.com TEST CIRCUIT 50 Ω Generator (see Note B) FORCEOFF ROUT FORCEON Auto- powerdown Plus INVALID DOUT DIN CL = 30 pF (see Note A) 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 plus disables drivers and reduces supply current to 1 µA. 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. −2.7 V Receiver Input −3 V 3 V 2.7 V tvalid VCC 0 V INVALID Output 3 V to 5 V 50% 50% 0 V 0 V 0 V 50% 50% Driver Input ≈5.5 V Driver Output ≈ −5.5 V Supply Voltages tdis ten tdis ten V+ V− V+ −0.3 V V− +0.3 V Voltage Waveforms and Timing Diagrams tinvalid V+ V− SN65C3238E ,, SN75C3238E 3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVERS/RECEIVERS WITH ±15-kV ESD (HBM) PROTECTION SLLS726 – MAY 2006 PARAMETER MEASUREMENT INFORMATION (continued) Figure 5. INVALID Propagation-Delay Times and Supply-Enabling Time 11 Submit Documentation Feedback |
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