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ISO7342CDW

Low-power, quad-channel, 2/2, 25-Mbps digital isolator

Manufacturer: Texas Instruments, Inc
Mfr.Part #: ISO7342CDW
Datasheet: ISO7342CDW Datasheet (PDF)
Package/Case: SOP
Product Type: Drivers
RoHS:
Lifecycle: Active

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ISO7342CDW General Description

The ISO734x family of devices provides galvanic isolation up to 3000 V_RMS for 1 minute per UL 1577 and 4242 V_PKper VDE V 0884-10. These devices have four isolated channels comprised of logic input and output buffers separated by a silicon dioxide (SiO₂) insulation barrier.

The ISO7340x device has four channels in forward direction, the ISO7341x device has three forward and one reverse-direction channels, and the ISO7342x device has two forward and two reverse-direction channels. In case of input power or signal loss, the default output is for devices with suffix and for devices without suffix . See the section for further details.

Used in conjunction with isolated power supplies, these devices help prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. The ISO734x device has integrated noise filter for harsh industrial environment where short noise pulses may be present at the device input pins. The ISO734x device has TTL input thresholds and operates from 3-V to 5.5-V supply levels. Through innovative chip design and layout techniques, electromagnetic compatibility of the ISO734x family of devices has been significantly enhanced to enable system-level ESD, EFT, surge, and emissions compliance.

For all available packages, see the orderable addendum at the end of the datasheet.

Key Features

Signaling Rate: 25 Mbps
Integrated Noise Filter on the Inputs
Default Output and Options
Low Power Consumption, Typical I_CC per Channel at 1 Mbps:
- ISO7340x: 0.9 mA (5-V Supplies),
  0.7 mA (3.3-V Supplies)
- ISO7341x: 1.2 mA (5-V Supplies),
  0.9 mA (3.3-V Supplies)
- ISO7342x: 1.3 mA (5-V Supplies),
  0.9 mA (3.3-V Supplies)
Low Propagation Delay: 31 ns
Typical (5-V Supplies)
3.3-V and 5-V Level Translation
Wide Temperature Range: –40°C to 125°C
70-KV/μs Transient Immunity,
Typical (5-V Supplies)
Robust Electromagnetic Compatibility (EMC)
- System-level ESD, EFT, and Surge Immunity
- Low Emissions
Operates from 3.3-V and 5-V Supplies
Wide-Body SOIC-16 Package
Safety-Related Certifications:
- 4242-V_PK Basic Isolation per DIN V VDE V 0884-10 and DIN EN 61010-1
- 3-KV_RMS Isolation for 1 minute per UL 1577
- CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 61010-1 End Equipment Standards
- GB4943.1-2011 CQC Certified

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Specifications

Rating	Catalog	Integrated isolated power	No
Isolation rating	Basic	Number of channels	4
Forward/reverse channels	2 forward / 2 reverse	Default output	High
Data rate (max) (MBps)	25	Surge isolation voltage (VIOSM) (VPK)	7800
Transient isolation voltage (VIOTM) (VPK)	4242	Withstand isolation voltage (VISO) (Vrms)	3000
CMTI (min) (V/µs)	25000	Operating temperature range (°C)	-40 to 125
Supply voltage (max) (V)	5	Supply voltage (min) (V)	3.3
Propagation delay time (typ) (µs)	0.031	Current consumption per channel (DC) (typ) (mA)	0.9
Current consumption per channel (1 Mbps) (typ) (mA)	0.9	Creepage (min) (mm)	8
Clearance (min) (mm)	8	feature-number-of-channels-per-chip	4
feature-maximum-data-rate	25Mbps	feature-maximum-rise-time-ns	2.8(Typ)
feature-maximum-fall-time-ns	2.1(Typ)	feature-minimum-pulse-width-ns
feature-maximum-pulse-width-distortion-ns	4	feature-minimum-operating-supply-voltage-v	3
feature-maximum-propagation-delay-skew-ns		feature-output-type	CMOS
feature-maximum-operating-supply-voltage-v	5.5	feature-maximum-propagation-delay-time-tphl-ns	66
feature-maximum-propagation-delay-time-tplh-ns	66	feature-maximum-quiescent-supply-current-ma	9
feature-maximum-power-dissipation-mw	111	feature-packaging	Tube
feature-rad-hard		feature-pin-count	16
feature-supplier-package	SOIC	feature-standard-package-name1	SO
feature-cecc-qualified		feature-esd-protection	Yes
feature-military	No	feature-aec-qualified	No
feature-aec-qualified-number		feature-auto-motive	No
feature-p-pap	No	feature-eccn-code	EAR99
feature-svhc	No	feature-svhc-exceeds-threshold	No

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