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Texas Instruments ISO7740QDWQ1 — Digital Isolators
Texas Instruments

TI ISO7740QDWQ1 Digital Isolator, 5000Vrms, AEC-Q100

MPNISO7740QDWQ1
End of Life

Texas Instruments ISO7740QDWQ1, automotive-grade digital isolator, 4 unidirectional channels, capacitive coupling, 100Mbps data rate, 5000Vrms isolation voltage, 16-SOIC package, -40°C to 125°C operating range.

$4.3Ref. price · indicative, final on quote
ISO7740QDWQ1 datasheet
Packaging16-SOIC (0.295", 7.50mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

ISO7740QDWQ1 Technical Specifications
ParameterValue
TypeGeneral Purpose
Channel typeUnidirectional
Mounting typeSurface Mount
Voltage2.25V ~ 5.5V
Voltage - isolation5000Vrms
Isolated powerNo
Operating temperature-40°C ~ 125°C
Pulse width distortion4.9ns
GradeAutomotive
PackageTube
Data rate100Mbps
TechnologyCapacitive Coupling
QualificationAEC-Q100
Case16-SOIC (0.295\", 7.50mm Width)
Number of channels4
Inputs - side 1/Side 24/0
Rise (Fall time)2.4ns, 2.4ns
Propagation delay tpLH (tpHL)16ns, 16ns
Common mode transient immunity40kV/µs

Product details

Automotive digital isolator with reinforced isolation

The ISO7740QDWQ1: All four channels pass data from side 1 to side 2 at up to 100Mbps, with propagation delay of 16ns max and pulse-width distortion under 4.9ns. The 16-SOIC package (7.50mm body width) supports surface-mount assembly on standard automotive PCB stacks.

Supply flexibility: 2.25V to 5.5V on both sides

Both isolation domains accept 2.25V to 5.5V independently, so a 3.3V MCU on side 1 can talk to a 5V peripheral on side 2 without a separate level shifter. The 16ns propagation delay is symmetric (tpLH = tpHL), which keeps the duty cycle within 4.9ns distortion — important for PWM signals where pulse-width accuracy matters.

The 16-SOIC wide-body (7.50mm width) provides 8mm creepage distance minimum for reinforced isolation in 1000Vrms working-voltage systems. The 16-SOIC supplier device package matches the standard automotive-grade footprint used across TI's ISO77xx family, so a layout designed for the ISO7741 or ISO7730 accepts this part without board changes.

Frequently asked questions

Is ISO7740QDWQ1 AEC-Q100 qualified?

This qualification is required for production parts in safety-critical and under-hood automotive ECUs.

What is the difference between ISO7740 and ISO7741?

The ISO7740 has a 4/0 input configuration — all four channels are unidirectional from side 1 to side 2. The ISO7741 uses a 3/1 input configuration: three channels forward (side 1 to side 2) and one channel reverse (side 2 to side 1). Both parts share the same 100Mbps data rate, 5000Vrms isolation, 16ns propagation delay, and AEC-Q100 qualification. Choose the ISO7740 when all four isolation channels carry data in one direction; choose the ISO7741 when one channel needs to return a status signal or acknowledge from the isolated side.

Can I use ISO7740QDWQ1 in a non-automotive design?

Yes. The AEC-Q100 qualification does not prevent use in industrial or commercial designs — it simply guarantees the part has passed automotive-grade stress testing. The automotive-grade suffix (Q1) typically carries a small cost premium over the commercial-grade variant, so if volume is high and automotive qualification is not needed, compare the non-Q1 ISO7740DW part.