ISO7840FDW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 1.7mA 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: >40 Years

• Wide Body SOIC-16 Package and Extra-Wide

Body SOIC-16 Package Options

• Safety and Regulatory Approvals:

– 8000VPK Reinforced Isolation per DIN EN IEC

60747-17 (VDE 0884-17)

– 5.7kVRMS Isolation for 1 Minute per UL 1577

– IEC 61010-1, IEC 62368-1, IEC 60601-1, and

GB 4943.1 certifications

2 Applications

• Industrial Automation

• Motor Control

• Power Supplies

• Solar Inverters

• Medical Equipment

• Hybrid Electric Vehicles

3 Description

The ISO7840x device is a high-performance, quadchannel

digital isolator with a 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 a silicon-dioxide (SiO2) insulation

barrier.

This device comes with enable pins that can be

used to put the respective outputs in high impedance

for multi-controller driving applications and to reduce

power consumption. The ISO7840 device has four

forward and zero reverse-direction channels. If the

input power or signal is lost, the default output is high

for the ISO7840 device and low for the ISO7840F

device. See the Device Functional Modes section for

further details.

Used in conjunction with isolated power supplies,

this device helps prevent noise currents on a

data bus or other circuits from entering the local

ground and interfering with or damaging sensitive

circuitry. Through remarkable chip design and layout

techniques, electromagnetic compatibility of the

ISO7840 device has been significantly enhanced to

ease system-level ESD, EFT, surge, and emissions

compliance.

The ISO7840 device is available in 16-pin SOIC widebody

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