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ISO7421 データシート(PDF) 10 Page - Texas Instruments |
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ISO7421 データシート(HTML) 10 Page - Texas Instruments |
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10 / 28 page  ISO7420, ISO7420M, ISO7421 SLLS984I – JUNE 2009 – REVISED JULY 2015 www.ti.com 6.8 Electrical Characteristics: VCC1 and VCC2 at 3.3 V ±5% TA = –40°C to 125°C for ISO7420M, TA = –40°C to 105°C for ISO742x PARAMETER TEST CONDITIONS MIN TYP MAX UNIT IOH = –4 mA; see Figure 6. VCCO (1) – 0.4 3 VOH High-level output voltage V IOH = –20 μA; see Figure 6. VCCO – 0.1 3.3 IOL = 4 mA; see Figure 6. 0.2 0.4 VOL Low-level output voltage V IOL = 20 μA; see Figure 6. 0 0.1 VI(HYS) Input threshold voltage hysteresis 400 mV IIH High-level input current 10 μA INx at 0 V or VCCI (1) IIL Low-level input current –10 μA Common-mode transient CMTI VI = VCCI or 0 V; seeFigure 8 . 25 40 kV/ μs immunity SUPPLY CURRENT (ALL INPUTS SWITCHING WITH SQUARE WAVE CLOCK SIGNAL FOR DYNAMIC ICC MEASUREMENT) ISO7420 ICC1 Supply current for VCC1 0.2 0.7 DC to 1 Mbps VI = VCCI or 0 V, 15 pF load mA ICC2 Supply current for VCC2 2 4.5 ISO7421 ICC1 Supply current for VCC1 1.5 3.5 DC to 1 Mbps VI = VCCI or 0 V, 15 pF load mA ICC2 Supply current for VCC2 1.5 3.5 (1) VCCI = Input-side power supply, VCCO = Output-side power supply 6.9 Power Dissipation Characteristics ISO742x THERMAL METRIC D (SOIC) UNIT 8 PINS VCC1 = VCC2 = 5.25 V, TJ = 150°C, CL = 15 pF PD Device power dissipation 55 mW Input a 1-Mbps 50% duty-cycle square wave 6.10 Switching Characteristics: VCC1 and VCC2 at 5 V ±5% TA = –40°C to 125°C for ISO7420M, TA = –40°C to 105°C for ISO742x PARAMETER TEST CONDITIONS MIN TYP MAX UNIT tPLH, tPHL Propagation delay time See Figure 6. 9 14 ns PWD(1) Pulse width distortion |tPHL – tPLH| 0.3 3.7 ns tsk(pp) Part-to-part skew time 4.9 ns tsk(o) Channel-to-channel output skew time 3.6 ns tr Output signal rise time See Figure 6. 1 ns tf Output signal fall time 1 ns tfs Fail-safe output delay time from input power loss See Figure 7. 6 μs (1) Also known as pulse skew. 6.11 Switching Characteristics: VCC1 at 5 V ±5%, VCC2 at 3.3 V ±5% TA = –40°C to 125°C for ISO7420M, TA = –40°C to 105°C for ISO742x PARAMETER TEST CONDITIONS MIN TYP MAX UNIT tPLH, tPHL Propagation delay time See Figure 6. 10 17 ns PWD(1) Pulse width distortion |tPHL – tPLH| 0.5 5.6 ns tsk(pp) Part-to-part skew time 6.3 ns tsk(o) Channel-to-channel output skew time 4 ns tr Output signal rise time See Figure 6. 2 ns (1) Also known as pulse skew. 10 Submit Documentation Feedback Copyright © 2009–2015, Texas Instruments Incorporated Product Folder Links: ISO7420 ISO7420M ISO7421 |
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