Specifications
| Type | Description |
|---|---|
| Part Number | ISO7842 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | 16-pin SOIC wide-body DW, nominal 10.30 mm × 7.50 mm; 16-pin SOIC extra-wide-body DWW, nominal 17.25 mm × 14.0 mm |
| Isolation Rating | 8000 VPK |
| Channel Count | 4 channels |
| Channel Direction Configuration | 2 forward channels, 2 reverse-direction channels |
| Signaling Rate | 0 to 100 Mbps |
| Supply Voltage | 2.25 to 5.5 V |
| Level Translation Range | 2.25 to 5.5 V |
| Ambient Temperature | -55 to 125 °C |
| Junction Temperature | -55 to 150 °C |
| Storage Temperature | -65 to 150 °C |
| Typical Supply Current Per Channel | 1.7 mA |
| Propagation Delay | 11 ns typical |
| Common-Mode Transient Immunity | ±100 kV/µs minimum |
| Output Default State | High for ISO7842; low for ISO7842F |
| Output Enable Behavior EN1 | Side 1 outputs enabled when EN1 is high or open; high-impedance when EN1 is low |
| Output Enable Behavior EN2 | Side 2 outputs enabled when EN2 is high or open; high-impedance when EN2 is low |
| High-Level Input Voltage | 0.7 × VCCI to VCCI |
| Low-Level Input Voltage | 0 to 0.3 × VCCI |
| High-Level Output Current | -4 mA max |
| High-Level Output Current | -2 mA max |
| High-Level Output Current | -1 mA max |
| Low-Level Output Current | 4 mA max |
| Low-Level Output Current | 2 mA max |
| Low-Level Output Current | 1 mA max |
| Absolute Maximum Supply Voltage | -0.5 to 6 V |
| Absolute Maximum I/O Voltage | -0.5 V to VCCX + 0.5 V; maximum must not exceed 6 V |
| Absolute Maximum Output Current | -15 to 15 mA |
| Surge Immunity | 12.8 kV |
| ESD Rating HBM | ±6000 V |
| ESD Rating CDM | ±1500 V |
| Maximum Power Dissipation | 200 mW |
| Maximum Power Dissipation Side 1 | 100 mW |
| Maximum Power Dissipation Side 2 | 100 mW |
| Junction-to-Ambient Thermal Resistance | 78.9 °C/W |
| Junction-to-Case Top Thermal Resistance | 41.6 °C/W DW; 41.1 °C/W DWW |
| External Clearance | >8 mm DW; >14.5 mm DWW; 15.0 mm typical |
| External Creepage | >8 mm DW; >14.5 mm DWW; 15.0 mm typical |
| Distance Through Insulation | >21 µm |
| Comparative Tracking Index | >600 V |
| Maximum Repetitive Peak Isolation Voltage | 2121 VPK DW; 2828 VPK DWW |
| Maximum Isolation Working Voltage AC | 1500 VRMS DW; 2000 VRMS DWW |
| Maximum Isolation Working Voltage DC | 2121 VDC DW; 2828 VDC DWW |
| Maximum Transient Isolation Voltage | 8000 VPK |
| Maximum Impulse Voltage | 9800 VPK |
| Maximum Surge Isolation Voltage | 12800 VPK |
| Barrier Capacitance | 2 pF |
| Isolation Resistance | >10^12 Ω |
| Isolation Resistance | >10^11 Ω |
| Isolation Resistance | >10^9 Ω |
| UL 1577 Withstand Isolation Voltage | 5700 VRMS |
| Datasheet Status | request_only |
Product Overview
The ISO7842 is a Texas Instruments quad-channel digital isolator in the Signal_Chain category. Its channel arrangement provides 2 forward channels and 2 reverse-direction channels, supporting isolated digital communication where signals must cross between two supply or ground domains. The device supports reinforced isolation with an 8000 VPK rating and a 0 to 100 Mbps recommended signaling-rate range.
Both VCC1 and VCC2 operate from 2.25 to 5.5 V, allowing level translation between supplies in the same 2.25 to 5.5 V range. Logic thresholds are defined as 0.7 × VCCI to VCCI for high-level input and 0 to 0.3 × VCCI for low-level input. At 5 V supplies, propagation delay is 11 ns typical, and common-mode transient immunity is ±100 kV/µs minimum.
Package options include 16-pin SOIC wide-body DW and 16-pin SOIC extra-wide-body DWW. The device is specified for -55 to 125 °C ambient operation, -55 to 150 °C junction temperature, and -65 to 150 °C storage temperature.
Key Features
- Four-channel digital isolator with 2 forward and 2 reverse channels
- Reinforced isolation rating of 8000 VPK
- Supports 0 to 100 Mbps signaling rate
- 2.25 to 5.5 V supplies support level translation
- 11 ns typical propagation delay at 5 V supplies
- ±100 kV/µs minimum common-mode transient immunity
- 1.7 mA typical supply current per channel at 1 Mbps
- Output defaults high for ISO7842 when input is lost
- EN1 and EN2 support high-impedance output control
- DW and DWW 16-pin SOIC package options
Typical Applications
- Isolated digital signal links
- Bidirectional channel isolation
- Logic level translation
- High-CMTI signal interfaces
- Reinforced isolation barriers
- Wide-temperature control systems
- Isolated 100 Mbps communication paths
Procurement Notes
When requesting a quote for ISO7842, 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 channel configuration does the ISO7842 provide?
The ISO7842 is a quad-channel digital isolator with 4 total channels. Its channel direction configuration is 2 forward channels and 2 reverse-direction channels, based on the ISO7842 device configuration.
What supply voltage range does ISO7842 support?
The recommended operating range for VCC1 and VCC2 is 2.25 to 5.5 V. The same 2.25 to 5.5 V range also supports level translation between the input and output supplies.
What happens if the ISO7842 input power or signal is lost?
For the ISO7842, the output default state is high if input power or signal is lost. The related ISO7842F default state is low under the same loss condition.
Which package options are listed for the ISO7842?
The listed packages are 16-pin SOIC wide-body DW with nominal 10.30 mm × 7.50 mm dimensions and 16-pin SOIC extra-wide-body DWW with nominal 17.25 mm × 14.0 mm dimensions.
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.