My Inquiry
My Account
Texas Instruments ISO7742QDBQQ1
- Part No.:
- ISO7742QDBQQ1
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ISO7742QDBQQ1.pdf
- Description:
- DGTL ISO 3000VRMS 4CH 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:368
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISO7742QDBQQ1 from Texas Instruments is an automotive-grade, reinforced quad-channel digital isolator with two forward and two reverse-direction signal channels, 100 Mbps data rate, 3000 VRMS isolation rating (DBQ package), ±100 kV/μs CMTI, and operation from –40°C to 125°C ambient. It enables bidirectional communication across high-voltage barriers in traction inverters and battery management systems.
For engineers reviewing the ISO7742QDBQQ1 datasheet, ISO7742QDBQQ1 pinout, ISO7742QDBQQ1 application, or ISO7742QDBQQ1 equivalent, key selection criteria include channel directionality (2F/2R), QSOP-16 package footprint, reinforced insulation certification per VDE 0884-17 and UL 1577, and dual-supply operation at 2.25–5.5 V with level translation capability.
Technical Context
The ISO7742QDBQQ1 implements double capacitive SiO₂ isolation barriers per channel, supporting independent input (VCCI/GNDI) and output (VCCO/GNDO) supplies for galvanic separation and voltage-level translation. Its functional safety documentation support aligns with ISO 26262 ASIL-B system design requirements.
Channel directionality is fixed: INA→OUTA and INB→OUTB are forward; OUTC←INC and OUTD←IND are reverse. Enable pins EN1 and EN2 independently place side-1 and side-2 outputs into high-impedance state, enabling multi-controller bus sharing without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 100 Mbps maximum - supports high-speed CAN FD, SPI, and PWM feedback loops in EV powertrain control |
| Isolation Rating | 3000 VRMS (UL 1577) - certified for reinforced insulation in QSOP-16 package per IEC 62368-1 and GB 4943.1 |
| CMTI | ±100 kV/μs typical - ensures robust noise immunity in high-dV/dt motor drive environments |
| Supply Range | 2.25 V to 5.5 V on both sides - enables direct interface with 3.3 V microcontrollers and 5 V analog front-ends |
| Propagation Delay | 10.7 ns typical (5 V) - preserves timing integrity in real-time closed-loop motor control |
| Operating Temp | –40°C to +125°C ambient - qualified per AEC-Q100 Grade 1 for under-hood automotive use |
| Power @ 1 Mbps | 1.5 mA per channel typical - reduces thermal load in densely packed BMS modules |
Pinout & Package
ISO7742QDBQQ1 uses the DBQ (QSOP-16) package: 4.90 mm × 3.90 mm body, 16-pin surface-mount, gull-wing leads. Pin spacing is 0.65 mm; total package height is 1.75 mm max.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA, INB, INC, IND | Input signals (side 1) | Accept CMOS/LVCMOS logic; INA/INB feed forward channels, INC/IND feed reverse channels |
| OUTA, OUTB, OUTC, OUTD | Output signals (side 2) | Drive downstream logic; OUTA/OUTB are forward outputs, OUTC/OUTD are reverse outputs |
| VCC1, VCC2 | Power supplies | VCC1 powers side-1 inputs/EN1; VCC2 powers side-2 outputs/EN2 - supports asymmetric supply configurations |
| GND1, GND2 | Ground references | Galvanically isolated grounds - mandatory for maintaining barrier integrity and noise rejection |
| EN1, EN2 | Output enable controls | Active-high enables; pulling low places respective side's outputs in high-Z - enables shared-bus arbitration |
| NC | No-connect | Pin 7 is unconnected - must remain floating; no PCB trace or solder mask relief required |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Insulation | 3000 VRMS UL rating + VDE 0884-17 certification - eliminates need for external creepage/clearance reinforcement in 400 V DC systems |
| Bidirectional Channel Mapping | 2 forward + 2 reverse channels - enables full-duplex SPI isolation and gate driver status feedback in single-package solution |
| High CMTI | ±100 kV/μs typical - prevents false triggering during 10 kV/μs switching transients in SiC-based inverters |
| Low-Power Enable Control | EN1/EN2 draw <30 μA - allows microcontroller GPIO to manage bus contention without auxiliary logic or power gating |
| Wide Supply Compatibility | 2.25–5.5 V operation on both sides - interfaces directly with 2.5 V ADCs, 3.3 V MCUs, and 5 V gate drivers without level shifters |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
Use Scenario: Isolating cell voltage monitoring ICs from MCU in high-voltage battery packs (up to 900 V DC). IC Role / Device Role / Timing Role: Bidirectional data isolator conveying ADC results (forward) and calibration commands (reverse) across 500 V potential difference. Use Value: Enables safe, high-resolution SOC/SOH calculation using ISO7742QDBQQ1's 100 Mbps rate and 10.7 ns propagation delay to maintain sampling synchronization. | Use Scenario: Isolating PWM signals from controller to SiC gate drivers and returning fault/status signals in 800 V electric vehicle inverters. IC Role / Device Role / Timing Role: Forward channels transmit gate drive commands; reverse channels return DESAT and overtemperature alerts with sub-15 ns latency. Use Value: Achieves functional safety compliance via reinforced insulation and ±100 kV/μs CMTI, preventing misfiring during high-dV/dt switching events. |
| On-Board Charger (OBC) | DC/DC Converter Control |
Use Scenario: Isolating digital control signals between primary-side controller and secondary-side regulation circuitry in bidirectional OBCs. IC Role / Device Role / Timing Role: Transmits phase-shift modulation commands (forward) and output current/voltage telemetry (reverse) across 1200 V working voltage barrier. Use Value: Leverages 3000 VRMS isolation and AEC-Q100 Grade 1 qualification to meet automotive OBC reliability and lifetime requirements. | Use Scenario: Isolating feedback signals (voltage/current) from isolated DC/DC converter output stage to primary-side controller in vehicle domain controllers. IC Role / Device Role / Timing Role: Provides galvanic separation for analog sensor conditioning and digital status reporting in 48 V–12 V conversion systems. Use Value: Uses dual-supply architecture (2.25–5.5 V) to interface 3.3 V MCU with 5 V sensing circuitry while maintaining 125°C ambient operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO7742QDWRQ1 | DW (wide-SOIC-16) package; 5000 VRMS isolation; larger footprint (10.3 × 7.5 mm) | Suitable for industrial designs requiring higher isolation rating and board space availability | Select when 5000 VRMS barrier strength is required and PCB layout accommodates wider SOIC |
| ADUM2402ARWZ-RL | 25 Mbps max data rate; 2500 VRMS; non-automotive grade; different pinout and enable logic | Limited to non-safety-critical 125°C industrial applications without AEC-Q100 or functional safety documentation | Choose only for cost-sensitive, non-automotive designs where 100 Mbps and ASIL-aligned certification are not required |
Compared with ISO7742QDWRQ1, ISO7742QDBQQ1 offers smaller QSOP-16 footprint and lower profile but trades 2000 VRMS isolation margin; versus ADUM2402ARWZ-RL, it delivers automotive qualification, 4× speed, and reinforced safety certification essential for EV powertrain systems.
Availability
ISO7742QDBQQ1 is available at Aetrix Electronics and suitable for battery management systems, traction inverters, on-board chargers, and DC/DC converters requiring stable component supply in automotive production programs.
Supply support for ISO7742QDBQQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in automotive, industrial, and power management solutions.
The ISO774x-Q1 family was designed specifically for high-reliability automotive powertrain and energy storage systems, delivering reinforced isolation, functional safety support, and AEC-Q100 qualification in compact packages.
FAQ
What is the isolation voltage rating of ISO7742QDBQQ1?
The ISO7742QDBQQ1 has a UL 1577-rated isolation voltage of 3000 VRMS and meets VDE 0884-17 reinforced insulation requirements with VIOWM = 400 VRMS (AC) and VIOTM = 4242 VPK. These ratings apply specifically to the DBQ-16 package and are validated per IEC 62368-1 and GB 4943.1 standards for automotive use.
Does ISO7742QDBQQ1 support bidirectional communication?
Yes, ISO7742QDBQQ1 supports bidirectional signal flow through its fixed 2-forward/2-reverse channel architecture: INA→OUTA and INB→OUTB are unidirectional forward paths, while INC←OUTC and IND←OUTD operate as reverse paths. This enables simultaneous command transmission and status feedback without external routing logic.
What are the supply voltage requirements for ISO7742QDBQQ1?
ISO7742QDBQQ1 operates with independent 2.25 V to 5.5 V supplies on both sides (VCC1 and VCC2), supporting level translation between disparate logic families. The device maintains full functionality across this range, including 100 Mbps data rate and ±100 kV/μs CMTI, with no minimum inter-rail voltage constraint.
How does the enable function work on ISO7742QDBQQ1?
ISO7742QDBQQ1 features two independent enable pins: EN1 controls side-1 outputs (OUTA/OUTB), and EN2 controls side-2 outputs (OUTC/OUTD). When pulled low, each enable places its respective side's outputs in high-impedance state - allowing multiple controllers to share a common bus without contention or external tri-state logic.
Is ISO7742QDBQQ1 qualified for automotive applications?
Yes, ISO7742QDBQQ1 is AEC-Q100 qualified for Grade 1 (–40°C to +125°C ambient), includes functional safety documentation support for ISO 26262 system development, and carries certifications including UL 1577, VDE 0884-17, IEC 62368-1, IEC 60601-1, and GB 4943.1 - all verified for the DBQ-16 package configuration.
ISO7742QDBQQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 85kV/µs
- Data Rate:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 16ns, 16ns
- Pulse Width Distortion (Max):
- 4.9ns
- Rise / Fall Time (Typ):
- 2.4ns, 2.4ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
ISO7742QDBQQ1 FAQ
1.How can I place an order for ISO7742QDBQQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7742QDBQQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISO7742QDBQQ1 reliable?
The price and inventory of ISO7742QDBQQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7742QDBQQ1 is usually 5 days.
3.What payment methods are accepted for ISO7742QDBQQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7742QDBQQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7742QDBQQ1?
ISO7742QDBQQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7742QDBQQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISO7742QDBQQ1?
For technical support, including ISO7742QDBQQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7742QDBQQ1 requirements.
6.How does Aetrix verify that ISO7742QDBQQ1 is sourced from the original manufacturer or authorized distributors?
All ISO7742QDBQQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISO7742QDBQQ1 meets industry standards.
7.What is the process for return or replacement of ISO7742QDBQQ1?
All ISO7742QDBQQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ISO7742QDBQQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISO7742QDBQQ1 part is unused and in its original packaging.
Return procedure for ISO7742QDBQQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7742QDBQQ1 Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
