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ISO6521REUR

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Texas Instruments Digital Isolators, VSON-8(2x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ISO6521REUR

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); iso6521reur.step / iso6521reur.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF