Specifications
| Type | Description |
|---|---|
| Part Number | ISO7740 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Inferred Category | Signal_Chain |
| Component Type | Other |
| Package / Case | SOIC (DW-16) 10.30 mm x 10.30 mm, body 7.50 mm nominal; SSOP/QSOP (DBQ-16) 4.90 mm x 6.0 mm, body 3.90 mm nominal |
| Data Rate | 100 Mbps maximum specified data rate; higher data rates possible |
| Isolation Rating, DW Package | 5000 VRMS per UL 1577 |
| Isolation Rating, DBQ Package | 3000 VRMS per UL 1577 |
| Projected Isolation Lifetime | >30 years at 1500 VRMS working voltage |
| Surge Capability | up to 12.8 kV across isolation barrier |
| Common-Mode Transient Immunity | ±100 kV/µs typical |
| Supply Voltage Range | 2.25 V to 5.5 V, VCC1 and VCC2 recommended operating range |
| Level Translation Range | 2.25 V to 5.5 V between input and output supplies |
| Operating Ambient Temperature | -55°C min, 25°C nom, 125°C max recommended free-air range |
| Propagation Delay | 10.7 ns typ at 5 V supplies |
| Supply Current per Channel | 1.5 mA typ at 1 Mbps operation |
| Default Output State, Non-F Devices | High when input power or signal is lost |
| Default Output State, F Suffix Devices | Low when input power or signal is lost |
| Channel Direction Configuration, ISO7740 | 4 forward, 0 reverse |
| Channel Direction Configuration, ISO7741 | 3 forward, 1 reverse |
| Channel Direction Configuration, ISO7742 | 2 forward, 2 reverse |
| Absolute Maximum Supply Voltage | -0.5 V min, 6 V max for VCC1 and VCC2 with respect to local ground |
| Absolute Maximum Voltage at INx, OUTx, ENx | -0.5 V min to VCCX + 0.5 V max; not to exceed 6 V, with respect to local ground |
| Absolute Maximum Output Current | -15 mA min, 15 mA max 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 ESD Rating | ±8000 V, IEC 61000-4-2 isolation barrier withstand test |
| 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 |
| High-Level Output Current at 5 V | -4 mA, VCCO = 5 V |
| High-Level Output Current at 3.3 V | -2 mA, VCCO = 3.3 V |
| High-Level Output Current at 2.5 V | -1 mA, VCCO = 2.5 V |
| Low-Level Output Current at 5 V | 4 mA, VCCO = 5 V |
| Low-Level Output Current at 3.3 V | 2 mA, VCCO = 3.3 V |
| Low-Level Output Current at 2.5 V | 1 mA, VCCO = 2.5 V |
| High-Level Input Voltage | 0.7 x VCCI min, VCCI max recommended operating condition |
| Low-Level Input Voltage | 0 V min, 0.3 x VCCI max recommended operating condition |
| Junction-to-Ambient Thermal Resistance, DW SOIC-16 | 83.4°C/W |
| Junction-to-Ambient Thermal Resistance, DBQ QSOP-16 | 109°C/W |
| Maximum Power Dissipation | 210 mW, ISO7740 both sides, VCC1 = VCC2 = 5.5 V, TJ = 150°C, CL = 15 pF, 50 MHz 50% duty-cycle input |
| Maximum Power Dissipation Side 1 | 45 mW, ISO7740, VCC1 = VCC2 = 5.5 V, TJ = 150°C, CL = 15 pF, 50 MHz 50% duty-cycle input |
| Maximum Power Dissipation Side 2 | 165 mW, ISO7740, VCC1 = VCC2 = 5.5 V, TJ = 150°C, CL = 15 pF, 50 MHz 50% duty-cycle input |
| External Clearance, DW-16 | >8 mm, shortest terminal-to-terminal distance through air |
| External Clearance, DBQ-16 | >3.7 mm, shortest terminal-to-terminal distance through air |
| External Creepage, DW-16 | >8 mm, shortest terminal-to-terminal distance across package surface |
| External Creepage, DBQ-16 | >3.7 mm, 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 |
| Material Group | I according to IEC 60664-1 |
| Maximum Repetitive Peak Isolation Voltage, DW-16 | 2121 VPK, ISO774x, DIN EN IEC 60747-17 bipolar AC voltage |
| Maximum Repetitive Peak Isolation Voltage, DBQ-16 | 566 VPK, ISO774x, DIN EN IEC 60747-17 bipolar AC voltage |
| Maximum Working Isolation Voltage, DW-16 | 1500 VRMS, ISO774x, AC voltage TDDB test |
| Maximum Working Isolation Voltage, DBQ-16 | 400 VRMS, ISO774x, AC voltage TDDB test |
| Maximum Transient Isolation Voltage, DW-16 | 8000 VPK, VTEST = VIOTM for 60 s qualification; VTEST = 1.2 x VIOTM for 1 s production |
| Maximum Transient Isolation Voltage, DBQ-16 | 4242 VPK, VTEST = VIOTM for 60 s qualification; VTEST = 1.2 x VIOTM for 1 s production |
| Datasheet Status | request_only |
Product Overview
The ISO7740 is a Texas Instruments quad-channel digital isolator in the Signal_Chain category. Its channel configuration is 4 forward and 0 reverse, distinguishing it from ISO7741 and ISO7742 configurations that provide 3 forward/1 reverse and 2 forward/2 reverse channels, respectively. The device supports a maximum specified data rate of 100 Mbps, with higher data rates noted as possible in the extracted datasheet facts.
Key Features
- 100 Mbps maximum specified data rate
- 5000 VRMS isolation rating in DW package
- 3000 VRMS isolation rating in DBQ package
- 2.25 V to 5.5 V supply operation
- 2.25 V to 5.5 V level translation
- 10.7 ns typical propagation delay at 5 V
- ±100 kV/µs typical common-mode transient immunity
- Up to 12.8 kV surge capability
- -55°C to 125°C free-air operating range
- 4 forward and 0 reverse channel configuration
- High or low default output options by suffix
- ±6000 V HBM and ±1500 V CDM ESD ratings
Typical Applications
- Isolated digital signal paths
- Logic-level translation interfaces
- High-CMTI digital isolation
- Surge-rated isolation barriers
- Wide-temperature signal-chain designs
- Multi-supply digital interfaces
- DW-16 high-clearance assemblies
- DBQ-16 compact isolator layouts
Procurement Notes
When requesting a quote for ISO7740, 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 ISO7740?
The ISO7740 is a Texas Instruments quad-channel digital isolator in the Signal_Chain category. Its channel arrangement is 4 forward and 0 reverse, and it supports a maximum specified data rate of 100 Mbps.
What isolation ratings apply to the ISO7740 packages?
The DW package is rated 5000 VRMS per UL 1577, while the DBQ package is rated 3000 VRMS per UL 1577. The DW package also lists 1500 VRMS maximum working isolation voltage in the extracted facts.
What supply range does the ISO7740 support?
The recommended operating supply range for VCC1 and VCC2 is 2.25 V to 5.5 V. The same 2.25 V to 5.5 V range is listed for level translation between input and output supplies.
What output state occurs if input power or signal is lost?
Devices without the F suffix default to a high output state when input power or signal is lost. Devices with the F suffix default to a low output state under the same 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.