ISO7821FDWRG4.B中文资料德州仪器数据手册PDF规格书

1 Features

• Signaling Rate: Up to 100Mbps

• Wide Supply Range: 2.25V to 5.5V

• 2.25V to 5.5V Level Translation

• Wide Temperature Range: –55°C to 125°C

• Low Power Consumption, Typical 1.8mA per

Channel at 1Mbps

• Low Propagation Delay: 11ns Typical

(5V Supplies)

• Industry leading CMTI(Min): ±100kV/μs

• Robust Electromagnetic Compatibility (EMC)

• System-Level ESD, EFT, and Surge Immunity

• Low Emissions

• Isolation Barrier Life: > 25 Years

• SOIC-16 Wide Body (DW) and Extra-Wide Body

(DWW) Package Options

• Safety and Regulatory Approvals:

– 8000VPK Reinforced Isolation per DIN V VDE V

0884-10 (VDE V 0884-10):2006-12

– 5.7kVRMS Isolation for 1 minute per UL 1577

– CSA Component Acceptance Notice 5A, IEC

60950-1 and IEC 60601-1 End Equipment

Standards

– CQC Certification per GB4943.1-2011

– TUV Certification per EN 61010-1 and EN

60950-1

– All DW Package Certifications Complete; DWW

Package Certifications Complete per UL, TUV

and Planned for VDE, CSA, and CQC

2 Applications

• Industrial Automation

• Motor Control

• Power Supplies

• Solar Inverters

• Medical Equipment

• Hybrid Electric Vehicles

3 Description

The ISO7821 is a high-performance, dual-channel

digital isolator with 8000VPK isolation voltage. This

device has reinforced isolation certifications according

to VDE, CSA, CQC, and TUV. The isolator provides

high electromagnetic immunity and low emissions

at low power consumption, while isolating CMOS

or LVCMOS digital I/Os. Each isolation channel

has a logic input and output buffer separated by

silicon dioxide (SiO2) insulation barrier. ISO7821 has

one forward and one reverse-direction channel. If

the input power or signal is lost, default output is

'high' for the ISO7821 and 'low' for the ISO7821F

device. Used in conjunction with isolated power

supplies, this device prevents noise currents on a

data bus or other circuits from entering the local

ground and interfering with or damaging sensitive

circuitry. Through innovative chip design and layout

techniques, electromagnetic compatibility of ISO7821

has been significantly enhanced to ease systemlevel

ESD, EFT, Surge and Emissions compliance.

ISO7821 is available in 16-pin SOIC wide-body (DW)

and extra-wide body (DWW) packages. The DWW

package option comes with enable pins which can be

used to put the respective outputs in high impedance

for multi-controller driving applications and to reduce

power consumption.