Specifications
| Type | Description |
|---|---|
| Part Number | ISO1042 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | SOIC-8 5.85 mm x 7.50 mm; SOIC-16 10.30 mm x 7.50 mm |
| CAN Physical Layer Standard | ISO11898-2:2016; device compliance |
| Classic CAN Data Rate | Up to 1 Mbps; Classic CAN mode |
| CAN FD Data Rate | Up to 5 Mbps; Flexible Data Rate mode |
| Loop Delay | 152 ns; low loop delay feature |
| DC Bus Fault Protection Voltage | ±70 V; CAN bus pins |
| Common-Mode Voltage Range | ±30 V; CAN bus operation |
| CMTI | 100 kV/µs; common-mode transient immunity |
| VCC1 Supply Voltage Range | 1.71 V to 5.5 V; digital side supply supporting 1.8 V, 2.5 V, 3.3 V, and 5.0 V logic interface |
| VCC2 Supply Voltage Range | 4.5 V to 5.5 V; transceiver side supply |
| Operating Ambient Temperature | -40°C to +125°C; recommended operating range |
| Isolation Rating | 5000 VRMS; isolation for 1 minute per UL 1577 |
| Working Voltage | 1060 VRMS / 1500 VPK; reinforced and basic isolation options |
| Maximum Transient Isolation Voltage | 7071 VPK; VIOTM per DIN VDE V 0884-11:2017-01 |
| Maximum Repetitive Peak Isolation Voltage | 1500 VPK; VIORM per DIN VDE V 0884-11:2017-01 |
| Surge Test Voltage, Reinforced Option | 10000 VPK; ISO1042x reinforced option |
| Surge Test Voltage, Basic Option | 6000 VPK; ISO1042Bx basic option |
| Absolute Maximum VCC1 | -0.5 V to 6 V; supply voltage, side 1, over operating free-air temperature range |
| Absolute Maximum VCC2 | -0.5 V to 6 V; supply voltage, side 2, over operating free-air temperature range |
| Logic Input and Output Voltage Range | -0.5 V to VCC1 + 0.5 V; maximum must not exceed 6 V; TXD and RXD pins |
| RXD Output Current | -15 mA to 15 mA; RXD pin absolute maximum rating |
| Bus Pin Voltage | -70 V to 70 V; CANH and CANL absolute maximum rating |
| Differential Bus Pin Voltage | -70 V to 70 V; CANH-CANL absolute maximum rating |
| Junction Temperature | -40°C to 150°C; absolute maximum rating |
| Storage Temperature | -65°C to 150°C; absolute maximum rating |
| HBM ESD Rating | ±6000 V; all pins, ANSI/ESDA/JEDEC JS-001 |
| HBM ESD Rating on Bus Pins | ±16000 V; CANH and CANL to GND2, ANSI/ESDA/JEDEC JS-001 |
| CDM ESD Rating | ±1500 V; all pins, JEDEC JESD22-C101 |
| ISO7637-2 Pulse 1 Transient Immunity | -100 V; CANH/CANL to GND2, GIFT-ICT CAN EMC test specification |
| ISO7637-2 Pulse 2 Transient Immunity | 75 V; CANH/CANL to GND2, GIFT-ICT CAN EMC test specification |
| ISO7637-2 Pulse 3a Transient Immunity | -150 V; CANH/CANL to GND2, GIFT-ICT CAN EMC test specification |
| ISO7637-2 Pulse 3b Transient Immunity | 100 V; CANH/CANL to GND2, GIFT-ICT CAN EMC test specification |
| Recommended VCC1 for 1.8 V Operation | 1.71 V to 1.89 V; side 1 supply voltage |
| Recommended VCC1 for 2.5 V, 3.3 V, and 5.5 V Operation | 2.25 V to 5.5 V; side 1 supply voltage |
| Recommended VCC2 | 4.5 V to 5.5 V; side 2 supply voltage |
| Junction-to-Ambient Thermal Resistance | 69.9°C/W; 100°C/W; DW SOIC-16; DWV SOIC-8 |
| Junction-to-Case Top Thermal Resistance | 31.8°C/W; 40.8°C/W; DW SOIC-16; DWV SOIC-8 |
| Maximum Power Dissipation | 385 mW; both sides, VCC1=VCC2=5.5 V, TJ=150°C, RL=50 ohm, TXD repetitive pattern with 1 ms period, 990 µs LOW and 10 µs HIGH |
| Maximum Power Dissipation Side 1 | 25 mW; VCC1=VCC2=5.5 V, TJ=150°C, RL=50 ohm, 2-Vpk-pk 2.5-MHz 50% duty-cycle differential square wave on CANH-CANL |
| Maximum Power Dissipation Side 2 | 360 mW; VCC1=VCC2=5.5 V, TJ=150°C, RL=50 ohm, TXD repetitive pattern with 1 ms period, 990 µs LOW and 10 µs HIGH |
| External Clearance | >8 mm; >8.5 mm; side 1 to side 2 distance through air, DW-16; DWV-8, IEC60664-1 |
| External Creepage | >8 mm; >8.5 mm; side 1 to side 2 distance across package surface, DW-16; DWV-8, IEC60664-1 |
| Distance Through Insulation | >17 µm; minimum internal gap, DW-16 and DWV-8 |
| Comparative Tracking Index | >600 V; IEC60112; UL746A, DW-16 and DWV-8 |
| Barrier Capacitance Input to Output | 1 pF; VIO=0.4 x sin(2πft), f=1 MHz |
| Insulation Resistance Input to Output at 25°C | >10^12 ohm; VIO=500 V, TA=25°C |
| Insulation Resistance Input to Output at 100°C to 150°C | >10^11 ohm; VIO=500 V, 100°C <= TA <= 150°C |
| Insulation Resistance Input to Output at TS=150°C | >10^9 ohm; VIO=500 V at TS=150°C |
| Datasheet Status | request_only |
Product Overview
The ISO1042 is a Texas Instruments isolated CAN transceiver for Signal_Chain designs requiring a CAN physical layer interface with galvanic isolation. Device compliance is specified to ISO11898-2:2016, with Classic CAN operation up to 1 Mbps and CAN FD operation up to 5 Mbps.
The digital side supply, VCC1, operates from 1.71 V to 5.5 V and supports 1.8 V, 2.5 V, 3.3 V, and 5.0 V logic interfaces. The transceiver side supply, VCC2, is specified from 4.5 V to 5.5 V. CAN bus operation includes a ±30 V common-mode voltage range, ±70 V DC bus fault protection on the CAN bus pins, and 100 kV/µs common-mode transient immunity.
Isolation parameters include 5000 VRMS for 1 minute per UL 1577, 1060 VRMS / 1500 VPK working voltage, 7071 VPK maximum transient isolation voltage, and 1500 VPK maximum repetitive peak isolation voltage. Package options are SOIC-8 and SOIC-16, with external creepage and clearance values above 8 mm or 8.5 mm depending on package option.
Key Features
- ISO11898-2:2016 CAN physical layer compliant device
- Classic CAN data rate up to 1 Mbps
- CAN FD data rate up to 5 Mbps
- 152 ns loop delay for CAN signal paths
- ±70 V DC bus fault protection on CAN pins
- ±30 V common-mode voltage range for CAN operation
- 100 kV/µs common-mode transient immunity rating
- 5000 VRMS isolation for 1 minute per UL 1577
- VCC1 supports 1.71 V to 5.5 V logic-side supply
- SOIC-8 and SOIC-16 package options
Typical Applications
- Isolated CAN physical layer interfaces
- CAN FD communication nodes
- Classic CAN communication nodes
- Logic-to-CAN transceiver isolation
- Automotive CAN transient-tested interfaces
- Systems requiring reinforced or basic isolation
- Wide-temperature CAN bus equipment
Procurement Notes
When requesting a quote for ISO1042, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What data rates does ISO1042 support?
ISO1042 supports Classic CAN data rates up to 1 Mbps and CAN FD data rates up to 5 Mbps. The device is specified for ISO11898-2:2016 CAN physical layer compliance.
What supply ranges are specified for ISO1042?
The digital side VCC1 supply range is 1.71 V to 5.5 V, supporting 1.8 V, 2.5 V, 3.3 V, and 5.0 V logic interfaces. The transceiver side VCC2 supply range is 4.5 V to 5.5 V.
What isolation ratings are listed for ISO1042?
ISO1042 lists 5000 VRMS isolation for 1 minute per UL 1577, 1060 VRMS / 1500 VPK working voltage, 7071 VPK maximum transient isolation voltage, and 1500 VPK maximum repetitive peak isolation voltage.
Which package options are identified for ISO1042?
The provided package information lists SOIC-8 at 5.85 mm x 7.50 mm and SOIC-16 at 10.30 mm x 7.50 mm. Related isolation spacing facts include external creepage and clearance above 8 mm or 8.5 mm depending on package.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.