Specifications
| Type | Description |
|---|---|
| Part Number | ISO7741 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | DW-16 SOIC-WB 10.30 mm x 10.30 mm body 7.50 mm nominal; DBQ-16 QSOP 4.90 mm x 6.0 mm package, 4.90 mm x 3.90 mm body nominal |
| Data Rate | 100 Mbps max; recommended operating conditions; higher data rates possible |
| Supply Voltage | 2.25 V min, 5.5 V max; VCC1, VCC2 recommended operating range |
| Operating Ambient Temperature | -55°C min, 25°C nominal, 125°C max; recommended operating conditions |
| Isolation Rating | 5000 VRMS; DW package, per UL 1577 |
| Isolation Rating | 3000 VRMS; DBQ package, per UL 1577 |
| Surge Capability | Up to 12.8 kV; robust isolation barrier feature |
| Common-Mode Transient Immunity | ±100 kV/µs typical; robust isolation barrier feature |
| Projected Isolation Barrier Lifetime | >30 years; at 1500 VRMS working voltage |
| Propagation Delay | 10.7 ns typical; 5 V supplies |
| Typical Power Consumption | 1.5 mA per channel typical; at 1 Mbps |
| Channel Direction Configuration | 3 forward, 1 reverse; ISO7741 device |
| Default Output State | High; devices without suffix F when input power or signal is lost |
| Default Output State | Low; devices with suffix F when input power or signal is lost |
| High-Level Input Voltage | 0.7 x VCCI min to VCCI max; recommended operating conditions |
| Low-Level Input Voltage | 0 V min to 0.3 x VCCI max; recommended operating conditions |
| High-Level Output Current | -4 mA; VCCO = 5 V |
| High-Level Output Current | -2 mA; VCCO = 3.3 V |
| High-Level Output Current | -1 mA; VCCO = 2.5 V |
| Low-Level Output Current | 4 mA; VCCO = 5 V |
| Low-Level Output Current | 2 mA; VCCO = 3.3 V |
| Low-Level Output Current | 1 mA; VCCO = 2.5 V |
| UVLO Rising Threshold | 2 V min, 2.25 V max; supply voltage rising |
| UVLO Falling Threshold | 1.7 V min, 1.8 V max; supply voltage falling |
| UVLO Hysteresis | 100 mV min, 200 mV max; supply voltage UVLO hysteresis |
| Absolute Maximum Supply Voltage | -0.5 V min, 6 V max; VCC1, VCC2 with respect to local ground |
| Absolute Maximum I/O Voltage | -0.5 V min to VCCX + 0.5 V max; maximum not to exceed 6 V; voltage at INx, OUTx, ENx |
| Absolute Maximum Output Current | -15 mA min, 15 mA max; output current IO |
| Maximum Junction Temperature | 150°C; absolute maximum rating |
| Storage Temperature | -65°C min, 150°C max; absolute maximum rating |
| HBM ESD Rating | ±6000 V; ANSI/ESDA/JEDEC JS-001, all pins |
| CDM ESD Rating | ±1500 V; JEDEC JESD22-C101, all pins |
| IEC Contact Discharge Rating | ±8000 V; IEC 61000-4-2 isolation barrier withstand test |
| Junction-to-Ambient Thermal Resistance | 83.4°C/W; DW-16 SOIC package |
| Junction-to-Ambient Thermal Resistance | 109°C/W; DBQ-16 QSOP package |
| Maximum Power Dissipation | 210 mW; ISO7741 both sides, VCC1 = VCC2 = 5.5 V, TJ = 150°C, CL = 15 pF, 50-MHz 50% duty cycle square-wave input |
| Maximum Side-1 Power Dissipation | 75 mW; ISO7741, VCC1 = VCC2 = 5.5 V, TJ = 150°C, CL = 15 pF, 50-MHz 50% duty cycle square-wave input |
| Maximum Side-2 Power Dissipation | 135 mW; ISO7741, VCC1 = VCC2 = 5.5 V, TJ = 150°C, CL = 15 pF, 50-MHz 50% duty cycle square-wave input |
| External Clearance | >8 mm; DW-16 package, shortest terminal-to-terminal distance through air |
| External Clearance | >3.7 mm; DBQ-16 package, shortest terminal-to-terminal distance through air |
| External Creepage | >8 mm; DW-16 package, shortest terminal-to-terminal distance across package surface |
| External Creepage | >3.7 mm; DBQ-16 package, shortest terminal-to-terminal distance across package surface |
| Minimum Internal Insulation Gap | >17 µm; DW-16 and DBQ-16 packages |
| Comparative Tracking Index | >600 V; DIN EN 60112 / IEC 60112 |
| Maximum Working Isolation Voltage | 1500 VRMS; ISO774x DW-16, AC voltage TDDB test |
| Maximum Working Isolation Voltage | 1000 VRMS; ISO7741B DW-16, AC voltage TDDB test |
| Maximum Transient Isolation Voltage | 8000 VPK; DW-16, VTEST = VIOTM, t = 60 s qualification; VTEST = 1.2 x VIOTM, t = 1 s production |
| Datasheet Status | request_only |
Product Overview
The ISO7741 is a Texas Instruments quad-channel digital isolator in the Signal_Chain category. Its channel direction configuration is 3 forward and 1 reverse, making it suited for isolated digital interfaces where signals must cross an isolation barrier in both directions.
Recommended operation covers VCC1 and VCC2 supplies from 2.25 V to 5.5 V, ambient temperature from -55°C to 125°C, and data rates up to 100 Mbps. Key dynamic and power parameters include 10.7 ns typical propagation delay at 5 V supplies and 1.5 mA per channel typical power consumption at 1 Mbps.
Package options include DW-16 SOIC-WB and DBQ-16 QSOP. The DW package is rated 5000 VRMS per UL 1577, while the DBQ package is rated 3000 VRMS per UL 1577. Isolation-related specifications include up to 12.8 kV surge capability, ±100 kV/µs typical common-mode transient immunity, and a projected barrier lifetime greater than 30 years at 1500 VRMS working voltage.
Key Features
- Quad-channel digital isolator with 3 forward, 1 reverse channels
- 100 Mbps maximum data rate under recommended operating conditions
- 2.25 V to 5.5 V VCC1 and VCC2 operation
- -55°C to 125°C recommended ambient operating range
- 5000 VRMS DW isolation rating per UL 1577
- 3000 VRMS DBQ isolation rating per UL 1577
- Up to 12.8 kV isolation barrier surge capability
- ±100 kV/µs typical common-mode transient immunity
- 10.7 ns typical propagation delay at 5 V supplies
- 1.5 mA per channel typical consumption at 1 Mbps
Typical Applications
- Isolated digital signal interfaces
- Bidirectional isolated logic links
- High-speed isolation barrier signaling
- Mixed-voltage digital isolation
- Systems requiring UL 1577 isolation
- Interfaces needing high CMTI
- Compact QSOP isolated designs
- Wide-body SOIC isolated designs
Procurement Notes
When requesting a quote for ISO7741, 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 type of device is the ISO7741?
The ISO7741 is a Texas Instruments quad-channel digital isolator in the Signal_Chain category. Its channel direction configuration is 3 forward and 1 reverse, supporting isolated digital signal transfer across the isolation barrier.
What supply range does ISO7741 support?
The recommended VCC1 and VCC2 operating range is 2.25 V minimum to 5.5 V maximum. Input thresholds are specified relative to VCCI, with high-level input from 0.7 x VCCI to VCCI and low-level input from 0 V to 0.3 x VCCI.
How do the ISO7741 package isolation ratings differ?
For UL 1577 isolation rating, the DW package is specified at 5000 VRMS and the DBQ package is specified at 3000 VRMS. Package isolation dimensions also differ, including greater than 8 mm clearance and creepage for DW and greater than 3.7 mm for DBQ.
What happens to ISO7741 outputs when input power or signal is lost?
Default output behavior depends on the device suffix. Devices without suffix F default high when input power or signal is lost. Devices with suffix F default low under the same input power or signal loss condition.
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.