ISO7220CD Digital Isolator 2500Vrms 2-Channel Equivalent & Substitute Parts

Part Overview

The ISO7220CD is a general purpose digital isolator manufactured by Texas Instruments, featuring 2500Vrms isolation voltage and 2-channel unidirectional configuration in an 8-SOIC package. This device utilizes capacitive coupling technology for signal isolation with a 25Mbps data rate and 25kV/µs common mode transient immunity. The ISO7220CD is designated as Last Time Buy, indicating end-of-life status. Equivalent and substitute parts are necessary to ensure design continuity and maintain supply chain reliability for applications requiring 2500Vrms isolation with comparable electrical performance.

Key Parameters

Parameter	ISO7220CD Value
Manufacturer	Texas Instruments
Voltage - Isolation	2500Vrms
Number of Channels	2
Channel Type	Unidirectional
Data Rate	25Mbps
Common Mode Transient Immunity (Min)	25kV/µs
Propagation Delay tpLH / tpHL (Max)	42ns / 42ns
Pulse Width Distortion (Max)	2ns
Voltage - Supply	2.8V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Technology	Capacitive Coupling
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following critical parameters:

Primary Substitution Criteria:

Voltage - Isolation: 2500Vrms (exact match required)
Number of Channels: 2 (exact match required)
Channel Type: Unidirectional (exact match required)
Package / Case: 8-SOIC (0.154", 3.90mm Width) (exact match required)
Inputs - Side 1/Side 2: 2/0 (exact match required)

Secondary Performance Parameters (allowable variation):

Data Rate: 25Mbps or higher
Common Mode Transient Immunity: 25kV/µs or higher
Propagation Delay: 42ns or lower
Pulse Width Distortion: 2ns or lower
Voltage - Supply: must encompass 2.8V ~ 5.5V range
Operating Temperature: must support -40°C minimum and 125°C maximum

Substitute parts are grouped by technology platform (Capacitive Coupling, Magnetic Coupling, GMR) and performance tier. Parts meeting all primary criteria and maintaining or exceeding secondary performance specifications are classified as direct substitutes.

Parameter Comparison

Part Number	Manufacturer	Technology	Data Rate	CMTI (Min)	tpLH/tpHL (Max)	PWD (Max)	Supply Voltage	Temp Range	Product Status	Packaging
ISO7220CD	Texas Instruments	Capacitive Coupling	25Mbps	25kV/µs	42ns / 42ns	2ns	2.8V ~ 5.5V	-40°C ~ 125°C	Last Time Buy	Tube
ISO7220CDR	Texas Instruments	Capacitive Coupling	25Mbps	25kV/µs	42ns / 42ns	2ns	2.8V ~ 5.5V	-40°C ~ 125°C	Active	Cut Tape (CT) & Digi-Reel®
ADUM1200CRZ	Analog Devices Inc.	Magnetic Coupling	25Mbps	25kV/µs	45ns / 45ns	3ns	2.7V ~ 5.5V	-40°C ~ 105°C	Active	Tube
ADUM1200CRZ-RL7	Analog Devices Inc.	Magnetic Coupling	25Mbps	25kV/µs	45ns / 45ns	3ns	2.7V ~ 5.5V	-40°C ~ 105°C	Active	Cut Tape (CT) & Digi-Reel®
ADUM1200BRZ	Analog Devices Inc.	Magnetic Coupling	10Mbps	25kV/µs	50ns / 50ns	3ns	2.7V ~ 5.5V	-40°C ~ 105°C	Active	Tube
ADUM1200BRZ-RL7	Analog Devices Inc.	Magnetic Coupling	10Mbps	25kV/µs	50ns / 50ns	3ns	2.7V ~ 5.5V	-40°C ~ 105°C	Active	Cut Tape (CT) & Digi-Reel®
ADUM1200ARZ	Analog Devices Inc.	Magnetic Coupling	1Mbps	25kV/µs	150ns / 150ns	40ns	2.7V ~ 5.5V	-40°C ~ 105°C	Active	Tube
ADUM1200ARZ-RL7	Analog Devices Inc.	Magnetic Coupling	1Mbps	25kV/µs	150ns / 150ns	40ns	2.7V ~ 5.5V	-40°C ~ 105°C	Active	Cut Tape (CT) & Digi-Reel®
IL 611-3E	NVE Corp/Isolation Products	GMR (Giant Magnetoresistive)	100Mbps	15kV/µs	15ns / 15ns	5ns	3V ~ 5.5V	-40°C ~ 85°C	Active	Tube
IL 611-3ETR7	NVE Corp/Isolation Products	GMR (Giant Magnetoresistive)	100Mbps	15kV/µs	15ns / 15ns	5ns	3V ~ 5.5V	-40°C ~ 85°C	Active	Reel
IL 711-3	NVE Corp/Isolation Products	GMR (Giant Magnetoresistive)	110Mbps	100kV/µs	15ns / 15ns	3ns	3V ~ 5.5V	-40°C ~ 100°C	Active	Tube

Engineering Selection Recommendations

Tier 1 - Direct Equivalent (Recommended Primary Substitute):

ISO7220CDR is the manufacturer-recommended direct equivalent. It maintains identical electrical specifications to ISO7220CD with the same capacitive coupling technology, 25Mbps data rate, and 2500Vrms isolation. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tube) and active product status, ensuring long-term availability and supply chain continuity.

Tier 2 - Performance-Matched Substitutes (Magnetic Coupling Platform):

ADUM1200CRZ and ADUM1200CRZ-RL7 (Analog Devices iCoupler® series) provide equivalent 25Mbps data rate and 25kV/µs CMTI performance using magnetic coupling technology. These parts maintain the 2500Vrms isolation and 2-channel unidirectional configuration. Operating temperature range is reduced to -40°C ~ 105°C (versus -40°C ~ 125°C for ISO7220CD). Propagation delay is marginally higher (45ns versus 42ns). Both parts carry Active product status with robust inventory availability.

ADUM1200BRZ and ADUM1200BRZ-RL7 offer reduced 10Mbps data rate with slightly degraded timing performance (50ns propagation delay, 3ns pulse width distortion). These are suitable only for applications with lower bandwidth requirements.

ADUM1200ARZ and ADUM1200ARZ-RL7 provide minimal 1Mbps data rate with significantly degraded timing characteristics (150ns propagation delay, 40ns pulse width distortion). These are suitable only for low-speed isolation applications.

Tier 3 - High-Performance Alternatives (GMR Technology):

IL 611-3E and IL 611-3ETR7 (NVE IsoLoop® series) exceed ISO7220CD performance with 100Mbps data rate and 15ns propagation delay. However, CMTI is reduced to 15kV/µs (versus 25kV/µs), and operating temperature maximum is limited to 85°C. Supply voltage minimum is 3V (versus 2.8V). These parts are suitable for applications prioritizing speed over isolation transient immunity and temperature range.

IL 711-3 provides the highest performance with 110Mbps data rate, 15ns propagation delay, and exceptional 100kV/µs CMTI. However, this part is RoHS non-compliant and operating temperature is limited to -40°C ~ 100°C. Supply voltage minimum is 3V. This part is suitable only for applications where RoHS compliance is not required and high transient immunity is critical.

Compliance Considerations:

ISO7220CDR, ADUM1200 series, and IL 611 series are ROHS3 compliant. IL 711-3 is RoHS non-compliant. All parts except IL 711-3 carry REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Can ADUM1200ARZ-RL7 replace ISO7220CD in all applications?

A: No. While ADUM1200ARZ-RL7 maintains 2500Vrms isolation and 2-channel unidirectional configuration, its 1Mbps data rate is significantly lower than ISO7220CD's 25Mbps. Propagation delay is 150ns versus 42ns, and pulse width distortion is 40ns versus 2ns. This part is suitable only for low-speed isolation applications. Operating temperature range is also reduced to -40°C ~ 105°C.

Q: What is the primary difference between ISO7220CD and ISO7220CDR?

A: ISO7220CD and ISO7220CDR are electrically identical. The difference is packaging format: ISO7220CD is supplied in Tube packaging, while ISO7220CDR is supplied in Cut Tape (CT) & Digi-Reel® format. ISO7220CDR has Active product status, ensuring continued availability, while ISO7220CD is Last Time Buy. For new designs, ISO7220CDR is the recommended choice.

Q: Why does IL 711-3 have higher CMTI than ISO7220CD?

A: IL 711-3 uses GMR (Giant Magnetoresistive) technology with 100kV/µs CMTI versus ISO7220CD's 25kV/µs. However, IL 711-3 is RoHS non-compliant and has reduced operating temperature range (-40°C ~ 100°C). Selection depends on whether high transient immunity or regulatory compliance is the priority.

Q: Are all substitute parts available in 8-SOIC package?

A: Yes. All listed substitute parts use the 8-SOIC (0.154", 3.90mm Width) package, ensuring mechanical and electrical compatibility with ISO7220CD footprints.

Q: What is the impact of reduced operating temperature range in ADUM1200 series?

A: ADUM1200 series parts operate to -40°C ~ 105°C maximum, versus ISO7220CD's -40°C ~ 125°C. Applications requiring operation above 105°C must use ISO7220CDR or IL 711-3. For most industrial applications operating below 105°C, this difference is not significant.

Q: Can IL 611-3E be used in applications requiring 2500Vrms isolation at 125°C?

A: No. IL 611-3E maximum operating temperature is 85°C. For applications requiring 2500Vrms isolation above 105°C, ISO7220CDR is the only suitable option among the listed parts.

Q: What packaging options are available for each substitute part?

A: ISO7220CDR, ADUM1200CRZ, ADUM1200BRZ, ADUM1200ARZ, and IL 611-3E are available in Tube packaging. ADUM1200CRZ-RL7, ADUM1200BRZ-RL7, and ADUM1200ARZ-RL7 are available in Cut Tape (CT) & Digi-Reel® format. IL 611-3ETR7 is available in Reel format. IL 711-3 is available in Tube packaging.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message