ISO7420DR

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Texas Instruments

DIGITAL ISOLATOR LOGIC 2-CH 1MBPS 8-PIN SOIC T/R

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ISO7420DR

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Texas Instruments

DIGITAL ISOLATOR LOGIC 2-CH 1MBPS 8-PIN SOIC T/R

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Description Specifications Series Pricing CAD Documents

Description

General part information

ISO7420 Series

The ISO7420, ISO7420M and ISO7421 provide galvanic isolation up to 2500 VRMSfor 1 minute per UL. These digital isolators have two isolated channels. Each isolation channel has a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier. Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other circuit from entering the local ground and interfering with or damaging sensitive circuitry. The suffix M indicates wide temperature range (–40°C to 125°C).

These devices have TTL input thresholds and require two supply voltages, 3.3 or 5 V, or any combination. All inputs are 5-V tolerant when supplied from a 3.3-V supply.

Note: The ISO7420 and ISO7421 are specified for signaling rates up to 1 Mbps. Due to their fast response time, under most cases, these devices will also transmit data with much shorter pulse widths. Designers should add external filtering to remove spurious signals with input pulse duration <20 ns if desired.

Technical Specifications

Parameters and characteristics for this part

Specification	ISO7420DR

Channel Type	Unidirectional
Common Mode Transient Immunity (Min)	25 kV/µs
Data Rate	1 Mbps
Fall Time (Typ)	1 ns
Inputs - Side 1	2
Inputs - Side 2	0
Isolated Power	No
Mounting Type	Surface Mount
Number of Channels	2
Operating Temperature (Max)	105 °C
Operating Temperature (Min)	-40 °C
Package Length	0.154 in
Package Name	8-SOIC
Package Width	3.9 mm
Propagation Delay tpHL (Max)	14 ns
Propagation Delay tpLH (Max)	14 ns
Pulse Width Distortion (Max)	3.7 ns
Rise Time (Typ)	1 ns
Technology	Capacitive Coupling
Type	General Purpose
Voltage - Isolation	2500 Vrms
Voltage - Supply (Range 1 Maximum)	3.45 V
Voltage - Supply (Range 1 Minimum)	3.15 V
Voltage - Supply (Range 2 Maximum)	5.25 V
Voltage - Supply (Range 2 Minimum)	4.75 V

ISO7420 Series

Dual-channel, 2/0, 50-Mbps, default output low digital isolator

Part	Inputs - Side 1	Isolated Power	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Voltage - Isolation	Common Mode Transient Immunity (Min)	Technology	Operating Temperature (Max)	Operating Temperature (Min)	Pulse Width Distortion (Max)	Package Name	Rise Time (Typ)	Fall Time (Typ)	Data Rate	Type	Channel Type	Mounting Type	Number of Channels	Propagation Delay tpLH (Max)	Propagation Delay tpHL (Max)	Package Length	Package Width	Voltage - Supply (Range 2 Minimum)	Voltage - Supply (Range 1 Minimum)	Voltage - Supply (Range 1 Maximum)	Voltage - Supply (Range 2 Maximum)
Texas Instruments ISO7420ED	2	No	5.5 V	3 V	2500 Vrms	25 kV/µs	Capacitive Coupling	125 °C	-40 °C	3 ns	8-SOIC	1.8 ns	1.7 ns	50 Mbps	General Purpose	Unidirectional	Surface Mount	2	11 ns	11 ns	0.154 in	3.9 mm
Texas Instruments ISO7420MD	2	No			2500 Vrms	25 kV/µs	Capacitive Coupling	125 °C	-40 °C	3.7 ns	8-SOIC	1 ns	1 ns	1 Mbps	General Purpose	Unidirectional	Surface Mount	2	14 ns	14 ns	0.154 in	3.9 mm	4.75 V	3.15 V	3.45 V	5.25 V
Texas Instruments ISO7420FCCDR	2	No	5.5 V	2.7 V	2500 Vrms	25 kV/µs	Capacitive Coupling	125 °C	-40 °C	5 ns	8-SOIC	2.5 ns	2.5 ns	50 Mbps	General Purpose	Unidirectional	Surface Mount	2	37 ns	37 ns	0.154 in	3.9 mm
Texas Instruments ISO7420FCCD	2	No	5.5 V	2.7 V	2500 Vrms	25 kV/µs	Capacitive Coupling	125 °C	-40 °C	5 ns	8-SOIC	2.5 ns	2.5 ns	50 Mbps	General Purpose	Unidirectional	Surface Mount	2	37 ns	37 ns	0.154 in	3.9 mm
Texas Instruments ISO7420FED	2	No	5.5 V	3 V	2500 Vrms	25 kV/µs	Capacitive Coupling	125 °C	-40 °C	3 ns	8-SOIC	1.8 ns	1.7 ns	50 Mbps	General Purpose	Unidirectional	Surface Mount	2	11 ns	11 ns	0.154 in	3.9 mm
Texas Instruments ISO7420D	2	No			2500 Vrms	25 kV/µs	Capacitive Coupling	105 °C	-40 °C	3.7 ns	8-SOIC	1 ns	1 ns	1 Mbps	General Purpose	Unidirectional	Surface Mount	2	14 ns	14 ns	0.154 in	3.9 mm	4.75 V	3.15 V	3.45 V	5.25 V
Texas Instruments ISO7420MDR	2	No			2500 Vrms	25 kV/µs	Capacitive Coupling	125 °C	-40 °C	3.7 ns	8-SOIC	1 ns	1 ns	1 Mbps	General Purpose	Unidirectional	Surface Mount	2	14 ns	14 ns	0.154 in	3.9 mm	4.75 V	3.15 V	3.45 V	5.25 V
Texas Instruments ISO7420FEDR	2	No	5.5 V	3 V	2500 Vrms	25 kV/µs	Capacitive Coupling	125 °C	-40 °C	3 ns	8-SOIC	1.8 ns	1.7 ns	50 Mbps	General Purpose	Unidirectional	Surface Mount	2	11 ns	11 ns	0.154 in	3.9 mm
Texas Instruments ISO7420DR	2	No			2500 Vrms	25 kV/µs	Capacitive Coupling	105 °C	-40 °C	3.7 ns	8-SOIC	1 ns	1 ns	1 Mbps	General Purpose	Unidirectional	Surface Mount	2	14 ns	14 ns	0.154 in	3.9 mm	4.75 V	3.15 V	3.45 V	5.25 V