1 Features
• AEC-Q100 qualified with the following results:
– Device temperature Grade 1: –40°C to +125°C
ambient operating temperature range
• Functional Safety-Capable (Planned)
– Documentation available to aid ISO 26262
system design
• Up to 150Mbps data rate
• Robust SiO2 isolation barrier:
– High lifetime at up to 1061VRMS and 1500VDC
working voltage
– Up to 5000VRMS isolation rating
– Up to 10.4kV surge capability
– Up to ±200kV/μs minimum CMTI
• Supply range: 2.25V to 5.5V
• Overvoltage Tolerant Inputs
• Default output high ( ISO644x-Q1 ) and low
( ISO644xF-Q1 ) options
• Low propagation delay: 10ns maximum at 5V,
12ns maximum at 3.3V
• Supports SPI up to: 25MHz at 5V, 20.8MHz at
3.3V
• Low pulse width distortion: 1.8ns maximum at 5V,
2.2ns maximum at 3.3V
• Robust electromagnetic compatibility (EMC)
– System-level RI, ESD, and surge immunity
– Low emissions
• Small Footprint Packages:
– Wide-SSOP (DFP-16) Package
– SSOP (DBQ-16) Package
• Safety-Related Certifications (Planned):
– DIN EN IEC 60747-17 (VDE 0884-17)
– UL 1577 and CSA CAS Notice No. 5A
– IEC 62368-1, IEC 61010-1 and GB 4943.1
certifications

2 Applications
• Hybrid, electric and power train system (EV/HEV)
– Battery management system (BMS)
– On-board charger
– DC/DC converter
– Inverter and motor control

3 Description
The ISO644x-Q1 devices are general purpose digital
isolators designed for applications requiring up to
5000VRMS isolation rating per UL 1577. The devices
are also certified by VDE, TUV, and CQC.
The ISO644x-Q1 devices provide high EMC
performance while isolating CMOS or LVCMOS digital
I/Os. ISO644x-Q1 uses SiO2 as the isolation barrier.
Each isolation channel has a logic input and output
buffer separated by the insulation barrier. These
devices come with enable pins that can be used to
put the respective outputs in high impedance.
The ISO6440-Q1 and ISO6440F-Q1 devices have all
channels in the forward direction. The ISO6441-Q1
and ISO6441F-Q1 devices have one reverse-direction
channel. The ISO6442-Q1 and ISO6442F-Q1 devices
have two reverse-direction channels.
In the event of input power or signal loss, the default
output is high for devices without the suffix F and
low for devices with the suffix F. See the Device
Functional Modes section for further details.