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ISO7421FED Datasheet(PDF) 6 Page - Texas Instruments |
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ISO7421FED Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 27 page  ISO7420E, ISO7420FE ISO7421E, ISO7421FE SLLSE45E – DECEMBER 2010 – REVISED JANUARY 2013 www.ti.com ELECTRICAL CHARACTERISTICS VCC1 = 3.3V ± 10%, VCC2 = 5V ± 10%, TA = -40°C to 125°C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ISO7421x (3.3V side) VCC1 – 0.4 3 IOH = –4 mA; see Figure 1. ISO7420x/7421x (5V side) VCC2 – 0.8 4.6 VOH High-level output voltage V ISO7421x (3.3V side) VCC1 – 0.1 3.3 IOH = –20 μA; see Figure 1 ISO7420x/7421x (5V side) VCC2 – 0.1 5 IOL = 4 mA; see Figure 1. 0.2 0.4 VOL Low-level output voltage V IOL = 20 μA; see Figure 1. 0 0.1 VI(HYS) Input threshold voltage hysteresis 400 mV IIH High-level input current 10 μA INx at 0 V or VCC IIL Low-level input current –10 μA CMTI Common-mode transient immunity VI = VCC or 0 V; see Figure 3. 25 50 kV/ μs SUPPLY CURRENT (All inputs switching with square wave clock signal for dynamic ICC measurement) ISO7420x ICC1 0.2 0.4 DC Input: VI = VCC or 0 V, DC to 1 Mbps AC Input: CL = 15pF ICC2 3.4 5 ICC1 0.4 0.6 10 Mbps ICC2 4.5 6 Supply current for VCC1 and VCC2 mA ICC1 0.6 0.9 25 Mbps CL = 15pF ICC2 6.2 8 ICC1 1 1.3 50 Mbps ICC2 9 12 ISO7421x ICC1 1.8 2.8 DC Input: VI = VCC or 0 V, DC to 1 Mbps AC Input: CL = 15pF ICC2 2.3 3.6 ICC1 2.2 3.2 10 Mbps ICC2 2.9 4.5 Supply current for VCC2 and VCC2 mA ICC1 2.8 4.1 25 Mbps CL = 15pF ICC2 4.3 6 ICC1 3.8 5.5 50 Mbps ICC2 6 8.5 SWITCHING CHARACTERISTICS VCC1 = 3.3V ± 10%, VCC2 = 5V ± 10%, TA = -40°C to 125°C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ISO7420x 7.5 12 E-grade tPLH, tPHL Propagation delay time ISO7421x 7.5 14 ns CC-grade See Figure 1. 18.5 32 ISO7420x 0.7 3 PWD(1) Pulse width distortion |tPHL – tPLH| ns ISO7421x 0.7 3.6 ISO7420x 0.5 1.5 tsk(o) (2) Channel-to-channel output skew time ns ISO7421x 0.5 3 ISO7420x 4.6 tsk(pp) (3) Part-to-part skew time ns ISO7421x 8.5 tr Output signal rise time 1.7 ns See Figure 1. tf Output signal fall time 1.6 ns tfs Fail-safe output delay time from input power loss See Figure 2. 6 μs (1) Also known as pulse skew. (2) tsk(o) is the skew between outputs of a single device with all driving inputs connected together and the outputs switching in the same direction while driving identical loads. (3) tsk(pp) is the magnitude of the difference in propagation delay times between any terminals of different devices switching in the same direction while operating at identical supply voltages, temperature, input signals and loads. 6 Submit Documentation Feedback Copyright © 2010–2013, Texas Instruments Incorporated Product Folder Links: ISO7420E ISO7420FE ISO7421E ISO7421FE |
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