MAX3225ECAP RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX3225ECAP is a full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, configured with 2 drivers and 2 receivers in a 20-SSOP surface mount package. This part is classified as obsolete, which necessitates identification of active equivalent and substitute components for new designs or ongoing production requirements. The device operates across a 3V to 5.5V supply range with a 1 Mbps data rate and is suitable for legacy RS232 communication applications requiring compact packaging.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX3225ECAP
Manufacturer	Analog Devices Inc./Maxim Integrated
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	1 Mbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Receiver Hysteresis	500 mV
Mounting Type	Surface Mount
Package / Case	20-SSOP (0.209", 5.30mm Width)
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX3225ECAP is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Receiver Hysteresis: 500 mV
Voltage - Supply: 3V ~ 5.5V
Mounting Type: Surface Mount
Package / Case: 20-SSOP (0.209", 5.30mm Width)

Allowable Variations:

Data Rate: Substitute parts may operate at 250 kbps or higher (1 Mbps minimum not required for substitution)
Operating Temperature: Substitute parts may have extended temperature ranges (-40°C ~ 85°C) without affecting functional compatibility
Product Status: Active parts are preferred over obsolete parts
RoHS Compliance: ROHS3 compliant parts are preferred for new designs
Packaging Format: Tube, Cut Tape (CT) & Digi-Reel®, or Tape & Reel (TR) are interchangeable for component selection

Substitute parts are grouped into three categories: Parametric Equivalents (identical electrical specifications with active status), Direct Equivalents (same base functionality with minor parameter variations), and Upgraded Alternatives (enhanced specifications suitable for demanding applications).

Parameter Comparison

Part Number	Manufacturer	Drivers/Receivers	Data Rate	Supply Voltage	Operating Temp	Package	Product Status	RoHS Status
MAX3225ECAP	Analog Devices/Maxim	2/2	1 Mbps	3V ~ 5.5V	0°C ~ 70°C	20-SSOP	Obsolete	Non-compliant
MAX3222ECAP+	Analog Devices/Maxim	2/2	1 Mbps	3V ~ 5.5V	0°C ~ 70°C	20-SSOP	Active	ROHS3 Compliant
MAX3225CAP+	Analog Devices/Maxim	2/2	1 Mbps	3V ~ 5.5V	0°C ~ 70°C	20-SSOP	Active	ROHS3 Compliant
MAX3225ECAP+	Analog Devices/Maxim	2/2	1 Mbps	3V ~ 5.5V	0°C ~ 70°C	20-SSOP	Active	ROHS3 Compliant
ICL3225ECAZ	Renesas Electronics	2/2	250 kbps	3V ~ 5.5V	0°C ~ 70°C	20-SSOP	Active	ROHS3 Compliant
ICL3225ECAZ-T	Renesas Electronics	2/2	250 kbps	3V ~ 5.5V	0°C ~ 70°C	20-SSOP	Active	ROHS3 Compliant
ICL3225EIAZ	Renesas Electronics	2/2	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	20-SSOP	Active	ROHS3 Compliant
ICL3225EIAZ-T	Renesas Electronics	2/2	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	20-SSOP	Active	ROHS3 Compliant
ICL3224EIAZ	Renesas Electronics	2/2	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	20-SSOP	Active	ROHS3 Compliant
ICL3224EIAZ-T	Renesas Electronics	2/2	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	20-SSOP	Active	ROHS3 Compliant
MAX3223CDB	Texas Instruments	2/2	250 kbps	3V ~ 5.5V	0°C ~ 70°C	20-SSOP	Obsolete	ROHS3 Compliant

Engineering Selection Recommendations

Parametric Equivalents (Recommended for Direct Replacement):

MAX3222ECAP+, MAX3225CAP+, and MAX3225ECAP+ are parametric equivalents of the MAX3225ECAP. These parts maintain identical electrical specifications including 1 Mbps data rate and 0°C to 70°C operating temperature range. All three are manufactured by Analog Devices/Maxim Integrated and are classified as active products with ROHS3 compliance. These parts are suitable for direct substitution in existing designs without circuit modification.

Direct Equivalents (Renesas ICL3225 Series):

ICL3225ECAZ and ICL3225ECAZ-T are direct equivalents manufactured by Renesas Electronics Corporation. Both maintain the 2/2 driver/receiver configuration, 3V to 5.5V supply voltage, and 20-SSOP package. The data rate is specified at 250 kbps, which is lower than the original 1 Mbps but remains compatible with RS232 protocol requirements. These parts are active and ROHS3 compliant. ICL3225ECAZ is supplied in tube packaging, while ICL3225ECAZ-T is supplied in cut tape format.

Upgraded Alternatives (Extended Temperature Range):

ICL3225EIAZ, ICL3225EIAZ-T, ICL3224EIAZ, and ICL3224EIAZ-T offer extended operating temperature ranges from -40°C to 85°C, suitable for applications requiring wider thermal operating conditions. These parts maintain the 2/2 configuration and 20-SSOP package. ICL3225EIAZ and ICL3225EIAZ-T are based on the ICL3225 platform, while ICL3224EIAZ and ICL3224EIAZ-T are based on the ICL3224 platform. All are active and ROHS3 compliant.

Obsolete Alternative (Not Recommended for New Designs):

MAX3223CDB is classified as obsolete and manufactured by Texas Instruments. Although ROHS3 compliant, its obsolete status makes it unsuitable for new production designs. This part is listed for reference only in legacy system maintenance scenarios.

Frequently Asked Questions (FAQ)

Q: Can MAX3225ECAP be directly replaced with MAX3222ECAP+ or MAX3225CAP+?

A: Yes. MAX3222ECAP+ and MAX3225CAP+ are parametric equivalents with identical electrical specifications. Both maintain 1 Mbps data rate, 2/2 driver/receiver configuration, and 0°C to 70°C operating temperature. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). No circuit modifications are required.

Q: What is the difference between ICL3225ECAZ and ICL3225EIAZ?

A: Both are Renesas Electronics RS232 transceivers in 20-SSOP packages with 2/2 driver/receiver configuration. The primary difference is operating temperature range: ICL3225ECAZ operates from 0°C to 70°C, while ICL3225EIAZ operates from -40°C to 85°C. The data rate for both is specified at 250 kbps. Select ICL3225EIAZ for applications requiring extended temperature operation.

Q: Why do some substitute parts have a lower data rate (250 kbps vs. 1 Mbps)?

A: The Renesas ICL3225 and ICL3224 series are specified at 250 kbps maximum data rate, while the Analog Devices MAX3225 and MAX3222 series are specified at 1 Mbps. Both rates are compatible with RS232 protocol requirements. For applications operating below 250 kbps, either specification is acceptable. For applications requiring 1 Mbps operation, select MAX3222ECAP+, MAX3225CAP+, or MAX3225ECAP+.

Q: What is the difference between tube, cut tape, and tape & reel packaging?

A: These are packaging and delivery formats that do not affect component electrical or mechanical specifications. Tube packaging is suitable for manual assembly or small-volume production. Cut tape (CT) & Digi-Reel® format is suitable for semi-automated pick-and-place equipment. Tape & Reel (TR) format is optimized for high-volume automated assembly. Select based on production volume and assembly equipment capability.

Q: Is MAX3223CDB a suitable substitute for MAX3225ECAP?

A: MAX3223CDB maintains the 2/2 driver/receiver configuration, RS232 protocol, and 20-SSOP package. However, it is classified as obsolete and manufactured by Texas Instruments rather than Analog Devices/Maxim. While ROHS3 compliant, its obsolete status makes it unsuitable for new production designs. Use only for legacy system maintenance where no other options exist.

Q: What does RoHS compliance mean for component selection?

A: ROHS3 compliance indicates the component meets Restriction of Hazardous Substances regulations, restricting lead and other hazardous materials. For new designs, ROHS3 compliant parts (MAX3222ECAP+, MAX3225CAP+, MAX3225ECAP+, and all Renesas ICL series) are required. The original MAX3225ECAP is RoHS non-compliant and should not be used in new designs subject to RoHS regulations.

Q: Can ICL3224EIAZ replace MAX3225ECAP?

A: ICL3224EIAZ maintains the 2/2 driver/receiver configuration, RS232 protocol, 3V to 5.5V supply voltage, and 20-SSOP package. The data rate is 250 kbps and operating temperature is -40°C to 85°C. Functional compatibility is confirmed for RS232 communication applications. The extended temperature range makes it suitable for demanding thermal environments. Select based on specific application temperature and data rate requirements.

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