si8405 Silicon Laboratories, si8405 Datasheet
si8405
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si8405 Summary of contents
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... MHz. The 8-pin version (Si8400) supports bidirectional SDA and SCL isolation, while the 16-pin version (Si8405) features two unidirectional isolation channels to support additional system signals, such as an interrupt or reset. All versions contain protection circuits to guard against data errors when an unpowered device is inserted into a powered system ...
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Si840x 2 Preliminary Rev. 0.1 ...
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T C ABLE O F ONTENTS Section 1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Si840x 1. Electrical Specifications Table 1. Si840x Electrical Characteristics for Bidirectional I 3.0 V < VDD < 5 –40 to +125 °C. Typical specs at 25 °C Parameter DC Specifications AVDD current 5 V BVDD current 5 ...
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Table 1. Si840x Electrical Characteristics for Bidirectional I 3.0 V < VDD < 5 –40 to +125 °C. Typical specs at 25 °C Parameter Pulse width distortion Side A low to Side B low ...
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... DC Supply Current (All inputs Supply) Si8405 AVDD Si8405 BVDD Si8405 AVDD Si8405 BVDD 10 Mbps Supply Current (All inputs = 500 kHz square wave all outputs) Si8405 AVDD Si8405 BVDD Timing Characteristics Maximum Data Rate Minimum Pulse Width Propagation Delay ...
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Table 3. Electrical Characteristics for All I 3.0 V < VDD < 5 –40 to +125 °C. Typical specs at 25 °C Parameter VDD Undervoltage Threshold VDD Negative-going Lockout Hysteresis Common Mode Transient Immunity Shut Down Time ...
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... Figure 2 depicts the timing test diagram Figure 2. Simplified Timing Test Diagram 8 AVDD BVDD ASDA BSDA 14 4 ADIN BDOUT 13 5 ADOUT BDIN 12 6 ASCL BSCL AGND BGND 8 9 Si8405 Preliminary Rev. 0 ...
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Typical Performance Characteristics Side A Side B 2 Figure Side A Pulling Down (1100 Pull-Up) Side B Side A 2 Figure Side B Pulling Down Side B Side A 2 Figure 5. ...
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Si840x Table 4. Absolute Maximum Ratings Parameter Storage Temperature Ambient Temperature Under Bias Supply Voltage Input Voltage Output Voltage 2 Output Current Drive (non-I C channels) 2 Side A output current drive (I C channels) 2 Side B output current ...
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Table 6. Insulation and Safety-Related Specifications Parameter Minimum Air Gap (Clearance) Minimum External Tracking (Creepage) Minimum Internal Gap (Internal Clearance) Tracking Resistance (Comparative Tracking Index) 1 Resistance (Input-Output) 1 Capacitance (Input-Output) 2 Input Capacitance Notes determine resistance and ...
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Si840x Table 8. IEC 60747-5-2 Insulation Characteristics for Si84xxxB* Parameter Maximum Working Insulation Voltage Input to Output Test Voltage Highest Allowable Overvoltage (Transient Overvoltage sec) TR Pollution Degree (DIN VDE 0110, Table 1) Insulation Resistance at T ...
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Table 10. Thermal Characteristics Parameter IC Junction-to-Air Thermal Resistance 400 300 270 200 160 100 0 0 Figure 8. NB SOIC-8 Thermal Derating Curve, Dependence of Safety Limiting Values with Case Temperature per DIN EN 60747-5-2 500 400 350 300 ...
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Si840x 2. Overview 2.1. Theory of Operation The operation of an Si84xx channel is analogous to that of an opto coupler, except an RF carrier is modulated instead of light. This simple architecture provides a robust isolated data path and ...
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Device Operation Device behavior during start-up, normal operation, and shutdown is shown in Figure 12, where UVLO+ and UVLO- are the positive-going and negative-going thresholds respectively. Refer to Table 11 to determine outputs when power supply (VDD) is not ...
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Si840x 3.3. Input and Output Characteristics for Non-I The Si84xx inputs and outputs are standard CMOS drivers/receivers. The nominal output impedance of an isolator driver channel is approximately 50 , ±40%, which is a combination of the value of the ...
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Layout Recommendations Dielectric isolation is a set of specifications produced by safety regulatory agencies from around the world, which describes the physical construction of electrical equipment that derives power from high-voltage power systems, such as 100–240 V systems or ...
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Si840x 4.2. RF Radiated Emissions The Si84xx families use an RF carrier frequency of approximately 700 MHz. This results in a small amount of radiated emissions at this frequency and its harmonics. The radiation is not from the IC chip ...
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... Anti-latch protection is typically added to one side of the isolator to avoid this condition (the "A" side for the Si8400/05). The following examples illustrate typical circuit configurations using the Si8405. I2C/SMBus Unit 1 ...
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Si840x 2 5. Isolator Design Constraints Table 13 lists the design constraints. Design Constraint To prevent the latch condition, the isolator output low level must be greater than the isolator input high level. The bus output low must ...
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... Figure 16 illustrates a typical circuit configuration using the Si8405. AVDD 0.1 µ ASDA RESET Micro- controller ASCL AGND Figure 16. Typical Application Diagram 16 1 0.1 µ Si8405 Preliminary Rev. 0.1 Si840x BVDD 3k 3k BSDA Micro controller Bus ...
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Si840x 6. Errata and Design Migration Guidelines When using the new ISOpro products, or when migrating from Silicon Labs' legacy isolators, designers must consider and adhere to the following requirements. 6.1. Power Supply Bypass Capacitors When using the ISOpro isolators ...
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Pin Descriptions AVDD ASDA ASCL AGND Pin Name 1 AVDD Side A power supply terminal; connect to a source of 3 ASDA Side A data input or output. 3 ASCL Side A clock input or ...
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... Si840x AVDD ASDA ADIN ADOUT ASCL AGND Table 15. Si8405 in Narrow-Body SO-16 Package Pin Name 1 AVDD Side A Power Supply Terminal. Connect to a source of 3 connection. 3 ASDA Side A Data Input or Output. 4 ADIN Side A Digital Input (non I 5 ADOUT Side A Digital Output (non I ...
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... Package Extension (1 = Narrow Body - 16 pin only) Ordering Part Number of Max I Number Bidirectional Bus Speed Channels (MHz) Si8400AA-A-IS 2 1.7 Si8400AB-A-IS 2 1.7 Si8405AA-A-IS1 2 1.7 Si8405AB-A-IS1 2 1.7 Si840YSV-R-TPn Figure 17. Naming Convention Table 16. Ordering Guide 2 Number of Max Data Rate of C Unidirectional 2 Non-I C Channels Unidirectional Channels (Mbps) 0 — 0 — 1 forward ...
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Si840x 9. Package Outline: 8-Pin Narrow Body SOIC Figure 18 illustrates the package details for the Si840x in an 8-pin SOIC (SO-8). Table 17 lists the values for the dimensions shown in the illustration. All packages are Pb-free and RoHS ...
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Landing Pattern: 8-Pin Narrow Body SOIC Figure 19 illustrates the recommended landing pattern details for the Si840x in an 8-pin narrow-body SOIC. Table 18 lists the values for the dimensions shown in the illustration. Figure 19. PCB Landing Pattern: ...
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Si840x 11. Package Outline: 16-Pin Narrow Body SOIC Figure 20 illustrates the package details for the Si840x in a 16-pin narrow-body SOIC (SO-16). Table 19 lists the values for the dimensions shown in the illustration. All packages are RoHS-compliant. Moisture ...
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Table 19. Package Diagram Dimensions (Continued) Dimension Min L2 h 0.25 θ 0° aaa bbb ccc ddd Notes: 1. All dimensions shown are in millimeters (mm) unless otherwise noted. 2. Dimensioning and Tolerancing per ANSI Y14.5M-1994. 3. This drawing conforms ...
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Si840x 12. Landing Pattern: 16-Pin Narrow Body SOIC Figure 21 illustrates the recommended landing pattern details for the Si840x in a 16-pin narrow-body SOIC. Table 20 lists the values for the dimensions shown in the illustration. Figure 21. 16-Pin Narrow ...
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Top Marking: 8-Pin Narrow Body SOIC Figure 22. 8-Pin Narrow Body SOIC Top Marking Table 21. 8-Pin Narrow Body SOIC Top Marking Table Line 1 Marking: Base Part Number Ordering Options (See Ordering Guide for more information). Line 2 ...
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Si840x 14. Top Marking: 16-Pin Narrow Body SOIC Figure 23. 16-Pin Narrow Body SOIC Top Marking Table 22. 16-Pin Narrow Body SOIC Top Marking Table Line 1 Marking: Base Part Number Ordering Options Line 2 Marking: Circle = 1.2 mm ...
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N : OTES Preliminary Rev. 0.1 Si840x 33 ...
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