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ISO6521REUR
Public Made by Adomby adom
Texas Instruments Digital Isolators, VSON-8(2x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownISO6521REUR
Texas Instruments · Digital Isolators · VSON-8(2x3)
ISO6521REUR from Texas Instruments, in a VSON-8(2x3). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VCC1 | power_in | Power supply for side 1 (input side), referenced to GND1; the datasheet specifies VCC1 operation from 1.71 V to 5.5 V. |
| 2 | OUTA | output | Channel A output on the ISO6521 (output side, referenced to GND2); it is driven to VCCO and GND2 levels by the isolated channel. |
| 3 | INB | input | Channel B logic input on the ISO6521 (input side, referenced to GND1), with VIH of at least 0.7 x VCCI and VIL of at most 0.3 x VCCI. |
| 4 | GND1 | power_in | Ground connection for VCC1 (input side ground). |
| 5 | GND2 | power_in | Ground connection for VCC2 (output side ground). |
| 6 | OUTB | output | Channel B output on the ISO6521 (output side, referenced to GND2). |
| 7 | INA | input | Channel A logic input on the ISO6521 (input side, referenced to GND1), with VIH of at least 0.7 x VCCI and VIL of at most 0.3 x VCCI. |
| 8 | VCC2 | power_in | Power supply for side 2 (output side), referenced to GND2; the datasheet specifies VCC2 operation from 1.71 V to 5.5 V. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSON-8(2x3) |
| Category | Signal Isolation Devices |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| High-level output current, VCCO = 5 V (recommended operating) | IOH | -4 | mA | VCCO = 5V | 5 | ||
| High-level output current, VCCO = 3.3 V (recommended operating) | IOH | -2 | mA | VCCO = 3.3V | 5 | ||
| High-level output current, VCCO = 2.5 V (recommended operating) | IOH | -1 | mA | VCCO = 2.5V | 5 | ||
| High-level output current, VCCO = 1.8 V (recommended operating) | IOH | -1 | mA | VCCO = 1.8V | 5 | ||
| Low-level output current, VCCO = 5 V (recommended operating) | IOL | 4 | mA | VCCO = 5V | 5 | ||
| Low-level output current, VCCO = 3.3 V (recommended operating) | IOL | 2 | mA | VCCO = 3.3V | 5 | ||
| Low-level output current, VCCO = 2.5 V (recommended operating) | IOL | 1 | mA | VCCO = 2.5V | 5 | ||
| Low-level output current, VCCO = 1.8 V (recommended operating) | IOL | 1 | mA | VCCO = 1.8V | 5 | ||
| Data rate | DR | 0 | 50 | Mbps | 5 | ||
| Ambient temperature (operating) | TA | -40 | 25 | 125 | °C | 5 | |
| Functional isolation working voltage, AC sinusoidal (REU-8) | VIOWM | 450 | VRMS | 时间依赖型电介质击穿 (TDDB) 测试；请参阅图 8-3 | 5 | ||
| Functional isolation working voltage, DC (REU-8) | VIOWM | 637 | VDC | 5 | |||
| Low-level output voltage, 5 V supply table | VOL | 0.4 | V | IOL = 4mA；请参阅图 6-1 | 6 | ||
| High-level input current, 5 V supply table | IIH | 10 | µA | 在 INx 处，VIH = VCCI | 6 | ||
| Low-level input current, 5 V supply table | IIL | -10 | µA | 在 INx 处，VIL = 0V | 6 | ||
| Common-mode transient immunity, 5 V supply table | CMTI | 100 | 150 | kV/μs | VI = VCC 或 0V，VCM = 700V；请参阅图 6-3 | 6 | |
| Supply current DC, 5 V (ISO6521), VI = VCCI | ICC1、ICC2 | 1.2 | 2.2 | mA | VI = VCCI (ISO6521) | 6 | |
| Supply current DC, 5 V (ISO6521), VI = 0V | ICC1、ICC2 | 2.3 | 3.5 | mA | VI = 0V (ISO6521) | 6 | |
| Supply current AC, 5 V (ISO6521), 1 Mbps | ICC1、ICC2 | 1.9 | 2.9 | mA | 1Mbps；所有通道均通过方波时钟输入实现开关；CL = 15pF | 6 | |
| Supply current AC, 5 V (ISO6521), 10 Mbps | ICC1、ICC2 | 2.5 | 3.6 | mA | 10Mbps；所有通道均通过方波时钟输入实现开关；CL = 15pF | 6 | |
| Supply current AC, 5 V (ISO6521), 50 Mbps | ICC1、ICC2 | 5.2 | 6.7 | mA | 50Mbps；所有通道均通过方波时钟输入实现开关；CL = 15pF | 6 | |
| Low-level output voltage, 3.3 V supply table | VOL | 0.2 | V | IOL = 2mA；请参阅图 6-1 | 7 | ||
| High-level input current, 3.3 V supply table | IIH | 10 | µA | 在 INx 处，VIH = VCCI | 7 | ||
| Low-level input current, 3.3 V supply table | IIL | -10 | µA | 在 INx 处，VIL = 0V | 7 | ||
| Common-mode transient immunity, 3.3 V supply table | CMTI | 100 | 150 | kV/μs | VI = VCC 或 0V，VCM = 700V；请参阅图 6-3 | 7 | |
| Supply current DC, 3.3 V (ISO6521), VI = VCCI | ICC1、ICC2 | 1.2 | 2.2 | mA | VI = VCCI (ISO6521) | 7 | |
| Supply current DC, 3.3 V (ISO6521), VI = 0V | ICC1、ICC2 | 2.3 | 3.5 | mA | VI = 0V (ISO6521) | 7 | |
| Supply current AC, 3.3 V (ISO6521), 1 Mbps | ICC1、ICC2 | 1.8 | 2.9 | mA | 1Mbps；所有通道均通过方波时钟输入实现开关；CL = 15pF | 7 | |
| Supply current AC, 3.3 V (ISO6521), 10 Mbps | ICC1、ICC2 | 2.3 | 3.4 | mA | 10Mbps；所有通道均通过方波时钟输入实现开关；CL = 15pF | 7 | |
| Supply current AC, 3.3 V (ISO6521), 50 Mbps | ICC1、ICC2 | 4.2 | 5.5 | mA | 50Mbps；所有通道均通过方波时钟输入实现开关；CL = 15pF | 7 | |
| Low-level output voltage, 2.5 V supply table | VOL | 0.1 | V | IOL = 1mA；请参阅图 6-1 | 8 | ||
| High-level input current, 2.5 V supply table | IIH | 10 | µA | 在 INx 处，VIH = VCCI | 8 | ||
| Low-level input current, 2.5 V supply table | IIL | -10 | µA | 在 INx 处，VIL = 0V | 8 | ||
| Common-mode transient immunity, 2.5 V supply table | CMTI | 100 | 150 | kV/μs | VI = VCC 或 0V，VCM = 700V；请参阅图 6-3 | 8 | |
| Supply current DC, 2.5 V (ISO6521), VI = VCCI | ICC1、ICC2 | 1.2 | 2.2 | mA | VI = VCCI (ISO6521) | 8 | |
| Supply current DC, 2.5 V (ISO6521), VI = 0V | ICC1、ICC2 | 2.3 | 3.5 | mA | VI = 0V (ISO6521) | 8 | |
| Supply current AC, 2.5 V (ISO6521), 1 Mbps | ICC1、ICC2 | 1.8 | 2.9 | mA | 1Mbps；所有通道均通过方波时钟输入实现开关；CL = 15pF | 8 | |
| Supply current AC, 2.5 V (ISO6521), 10 Mbps | ICC1、ICC2 | 2.1 | 3.2 | mA | 10Mbps；所有通道均通过方波时钟输入实现开关；CL = 15pF | 8 | |
| Supply current AC, 2.5 V (ISO6521), 50 Mbps | ICC1、ICC2 | 3.6 | 4.9 | mA | 50Mbps；所有通道均通过方波时钟输入实现开关；CL = 15pF | 8 | |
| Low-level output voltage, 1.8 V supply table | VOL | 0.1 | V | IOL = 1mA；请参阅图 6-1 | 9 | ||
| High-level input current, 1.8 V supply table | IIH | 10 | µA | 在 INx 处，VIH = VCCI | 9 | ||
| Low-level input current, 1.8 V supply table | IIL | -10 | µA | 在 INx 处，VIL = 0V | 9 | ||
| Common-mode transient immunity, 1.8 V supply table | CMTI | 100 | 150 | kV/μs | VI = VCC 或 0V，VCM = 700V；请参阅图 6-3 | 9 | |
| Supply current DC, 1.8 V (ISO6521), VI = VCCI | ICC1、ICC2 | 1.1 | 2.1 | mA | VI = VCCI (ISO6521) | 9 | |
| Supply current DC, 1.8 V (ISO6521), VI = 0V | ICC1、ICC2 | 2.1 | 3.4 | mA | VI = 0V (ISO6521) | 9 | |
| Supply current AC, 1.8 V (ISO6521), 1 Mbps | ICC1、ICC2 | 1.6 | 2.7 | mA | 1Mbps；所有通道均通过方波时钟输入实现开关；CL = 15pF | 9 | |
| Supply current AC, 1.8 V (ISO6521), 10 Mbps | ICC1、ICC2 | 1.9 | 3 | mA | 10Mbps；所有通道均通过方波时钟输入实现开关；CL = 15pF | 9 | |
| Supply current AC, 1.8 V (ISO6521), 50 Mbps | ICC1、ICC2 | 3 | 4.2 | mA | 50Mbps；所有通道均通过方波时钟输入实现开关；CL = 15pF | 9 | |
| Junction-to-ambient thermal resistance (DFN REU-8) | RθJA | 143.4 | °C/W | 5 | |||
| Junction-to-case (top) thermal resistance (DFN REU-8) | RθJC(top) | 70 | °C/W | 5 | |||
| Junction-to-board thermal resistance (DFN REU-8) | RθJB | 78.3 | °C/W | 5 | |||
| Junction-to-top characterization parameter (DFN REU-8) | ψJT | 4.2 | °C/W | 5 | |||
| Junction-to-board characterization parameter (DFN REU-8) | ψJB | 77.7 | °C/W | 5 |
CAD (KiCad official)
- Symbol:
ISO6521REUR - Footprint:
Package_SON:SON-8-1EP_3x2mm_P0.5mm_EP1.4x1.6mm - 3D model: VSON-8(2x3), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal QFN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
iso6521reur-etched.step/iso6521reur-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso6521reur.step/iso6521reur.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (34 pp, sha256
f45d8be86cd7bd59, retrieved 2026-10-18, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).