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ISO7421 Datasheet(PDF) 8 Page - Texas Instruments |
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ISO7421 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 20 page S0412-01 V I 50 W IN V O Input Generator (1) C L (2) OUT 1.4V 10% 90% V I V O t PLH t PHL 1.4V V CC1 0V V /2 CC t r t f V OH V /2 CC V OL V I IN V O 0 V or V CC1 C L (1) OUT V CC1 t fs 2.7 V V CC1 0 V V I V OL V OH 50% V O S0414-01 C=0.1 F±1% m IN V OH orVOL (1) OUT V CC1 + – V CM V CC2 C=0.1 F±1% m GND2 GND1 S1 + – Pass-failcriteria – outputmustremain stable. ISO7420, ISO7420M ISO7421, ISO7421M SLLS984D – JUNE 2009 – REVISED JULY 2010 www.ti.com PARAMETER MEASUREMENT INFORMATION (1) The input pulse is supplied by a generator having the following characteristics: PRR ≤ 50 kHz, 50% duty cycle, tr ≤ 3 ns, tf ≤ 3 ns, ZO = 50 Ω. At the input, a 50-Ω resistor is required to terminate the Input Generator signal. It is not needed in an actual application. (2) CL = 15 pF ± 20% includes instrumentation and fixture capacitance. Figure 1. Switching Characteristic Test Circuit and Voltage Waveforms (1) CL = 15 pF ± 20% includes instrumentation and fixture capacitance. Figure 2. Fail-Safe Output Delay-Time Test Circuit and Voltage Waveforms (1) CL = 15 pF ±20% includes instrumentation and fixture capacitance. Figure 3. Common-Mode Transient Immunity Test Circuit 8 Submit Documentation Feedback Copyright © 2009–2010, Texas Instruments Incorporated Product Folder Link(s): ISO7420 ISO7420M ISO7421 ISO7421M |
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