ISO7742-Q1 Texas instruments

ISO7742-Q1

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ISO7742-Q1

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Описание

The ISO774x-Q1automotive devicesare high-performance, quad-channel digital isolators with 5700 VRMS (DWW package), 5000 VRMS(DW package) and 3000 VRMS (DBQ package) isolation ratings per UL 1577. This family of devices has reinforced insulation ratings according to VDE, CSA, TUV and CQC. The ISO774x-Q1 devices provide 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 double capacitive silicon dioxide (SiO2) insulation barrier. These devices come with enable pins which can be used to put the respective outputs in high impedance for multi-master driving applications and to reduce power consumption. The ISO7740-Q1device has all four channels in the same direction, theISO7741-Q1 device has three forward and one reverse-direction channels, and theISO7742-Q1device has two forward and two reverse-direction channels. If the input power or signal is lost, default output is high for devices without suffix F and low for devices with suffix F. See the Device Functional Modes section for further details.

Qualified for automotive applications
AEC-Q100 qualified with the following results:
- Device temperature Grade 1: –40°C to 125°C ambient operating temperature
Functional Safety-Capable
- Documentation available to aid functional safety system design: ISO7740-Q1, ISO7741-Q1, ISO7742-Q1
100 Mbps data rate
Robust isolation barrier:
- >100-year projected lifetime at 1500 V_RMS working voltage
- Up to 5700 V_RMS isolation rating
- Up to 12.8 kV surge capability
- ±100 kV/µs typical CMTI
Wide supply range: 2.25 V to 5.5 V
2.25-V to 5.5-V level translation
Default output high (ISO774x) and low (ISO774xF) options
Low power consumption, typical 1.5 mA per channel at 1 Mbps
Low propagation delay: 10.7 ns typical (5-V Supplies)
Robust electromagnetic compatibility (EMC)
- System-level ESD, EFT, and surge immunity
- ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier
- Low emissions
Extra-wide SOIC (DWW-16), wide-SOIC (DW-16) and QSOP (DBQ-16) package options
Safety-related certifications:
- DIN VDE V 0884-11:2017-01
- UL 1577 component recognition program
- CSA, CQC, and TUV certifications

Integrated isolated power	No
Number of channels	4
Forward/reverse channels	2 forward / 2 reverse
Data rate (max) (MBits)	100
Rating	Automotive
Current consumption per channel (DC) (typ) (mA)	0.72
Current consumption per channel (1 Mbps) (typ) (mA)	1.45
Operating temperature range (°C)	-40 to 125
Default output	High, Low
TI functional safety category	Functional Safety-Capable
Supply voltage (max) (V)	5.5
Supply voltage (min) (V)	2.25
Propagation delay time (typ) (µs)	0.0107
CMTI (min) (V/µs)	85000
Isolation rating	Basic, Reinforced
Surge isolation voltage (VIOSM) (VPK)	6400, 12800
Transient isolation voltage (VIOTM) (VPK)	4242, 8000
Withstand isolation voltage (VISO) (Vrms)	3000, 5000
Creepage (min) (m)	0.0037, 0.008
Clearance (min) (m)	0.0037, 0.008