ICL3232IBN-T Equivalent & Substitute Parts

Part Overview

The ICL3232IBN-T is a 2/2 full-duplex RS232 transceiver manufactured by Renesas Electronics Corporation in a 16-SOIC surface mount package. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement. The part operates across a 3V to 5.5V supply voltage range with a 250 kbps data rate and 300 mV receiver hysteresis, making it suitable for legacy RS232 communication applications requiring full-duplex operation.

Key Parameters

Parameter	Value
Manufacturer Part Number	ICL3232IBN-T
Manufacturer	Renesas Electronics Corporation
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	300 mV
Data Rate	250 kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the ICL3232IBN-T 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
Voltage Supply Range: 3V ~ 5.5V (minimum overlap required)
Operating Temperature Range: -40°C ~ 85°C (minimum overlap required)
Mounting Type: Surface Mount
Package Type: 16-SOIC

Allowable Variation Parameters:

Receiver Hysteresis: 300 mV to 500 mV (higher hysteresis acceptable for noise immunity)
Data Rate: 250 kbps minimum (higher data rates acceptable for backward compatibility)
RoHS Status: Active parts may be RoHS3 compliant (improvement over non-compliant status)
MSL Rating: May vary based on packaging format

Packaging Variants: Substitute parts are grouped by packaging format: Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), and Tube. These represent distribution methods for the same electrical component and are interchangeable for design purposes.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Duplex	Receiver Hysteresis	Data Rate	Supply Voltage	Operating Temp	Package	Product Status	RoHS Status
ICL3232IBN-T	Renesas	RS232	2/2	Full	300 mV	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154")	Obsolete	Non-compliant
ICL3232IBNZ-T	Renesas	RS232	2/2	Full	300 mV	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154")	Active	ROHS3 Compliant
ICL3232IBNZ-T7A	Renesas	RS232	2/2	Full	300 mV	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154")	Active	ROHS3 Compliant
ADM3202ARNZ	Analog Devices	RS232	2/2	Full	400 mV	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154")	Active	ROHS3 Compliant
ADM3202ARNZ-REEL	Analog Devices	RS232	2/2	Full	400 mV	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154")	Active	ROHS3 Compliant
ADM3202ARNZ-REEL7	Analog Devices	RS232	2/2	Full	400 mV	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154")	Active	ROHS3 Compliant
ADM3202ARWZ	Analog Devices	RS232	2/2	Full	400 mV	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.295")	Active	ROHS3 Compliant
ADM3202ARWZ-REEL	Analog Devices	RS232	2/2	Full	400 mV	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.295")	Active	ROHS3 Compliant
ADM3202ARWZ-REEL7	Analog Devices	RS232	2/2	Full	400 mV	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.295")	Active	ROHS3 Compliant
ADM3232EARNZ	UMW	RS232	2/2	Full	300 mV	235 kbps	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154")	Active	ROHS3 Compliant
ADM3232EARNZ-REEL7	Analog Devices	RS232	2/2	Full	500 mV	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154")	Active	ROHS3 Compliant

Engineering Selection Recommendations

Parametric Equivalents (Renesas ICL3232 Series):

ICL3232IBNZ-T and ICL3232IBNZ-T7A are direct parametric equivalents to the ICL3232IBN-T. Both maintain identical electrical specifications (300 mV hysteresis, 250 kbps data rate, 3V–5.5V supply, -40°C to 85°C operating range) and package geometry (16-SOIC 0.154" width). The primary distinction is product status: both are active components with ROHS3 compliance, addressing the obsolescence and RoHS non-compliance of the original part. ICL3232IBNZ-T is available in Cut Tape & Digi-Reel® packaging (25,200 units in stock), while ICL3232IBNZ-T7A is supplied in Tape & Reel format (1,045 units in stock).

Similar Substitutes (Analog Devices ADM3202 Series):

The ADM3202 family from Analog Devices provides functional substitution with enhanced performance characteristics. All ADM3202 variants maintain the 2/2 full-duplex RS232 configuration, 3V–5.5V supply range, and -40°C to 85°C operating temperature. The ADM3202 series features 400 mV receiver hysteresis (versus 300 mV) and 460 kbps data rate (versus 250 kbps), both representing improvements in noise immunity and communication speed. All ADM3202 parts are active with ROHS3 compliance. Package width varies: ADM3202ARNZ variants use 0.154" width (matching the original), while ADM3202ARWZ variants use 0.295" width. Packaging options include Tube, Cut Tape & Digi-Reel®, and Tape & Reel formats with inventory ranging from 1,310 to 44,100 units.

Alternative Substitute (UMW ADM3232 Series):

ADM3232EARNZ from UMW and ADM3232EARNZ-REEL7 from Analog Devices represent alternative substitution paths. ADM3232EARNZ maintains 300 mV hysteresis matching the original but operates at 235 kbps (below the original 250 kbps specification). ADM3232EARNZ-REEL7 operates at 460 kbps with 500 mV hysteresis. Both are active, ROHS3-compliant components with 16-SOIC packaging and -40°C to 85°C operating range. These options are suitable when ADM3202 or ICL3232IBNZ variants are unavailable.

Frequently Asked Questions (FAQ)

Q: Can ICL3232IBNZ-T directly replace ICL3232IBN-T without circuit modification?

A: Yes. ICL3232IBNZ-T is a parametric equivalent with identical electrical specifications and package geometry. The only differences are product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant). No circuit redesign is required.

Q: What is the difference between ICL3232IBNZ-T and ICL3232IBNZ-T7A?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The difference is packaging format: ICL3232IBNZ-T is supplied in Cut Tape & Digi-Reel® format, while ICL3232IBNZ-T7A is supplied in Tape & Reel format. Selection depends on procurement and assembly requirements.

Q: Can ADM3202ARNZ replace ICL3232IBN-T?

A: Yes, with performance enhancement. ADM3202ARNZ maintains all critical parameters (2/2 RS232, full-duplex, 3V–5.5V supply, -40°C to 85°C operation, 16-SOIC 0.154" package). The ADM3202 features higher receiver hysteresis (400 mV versus 300 mV) and faster data rate (460 kbps versus 250 kbps), both beneficial for signal integrity and communication speed. The part is active and ROHS3-compliant.

Q: What is the significance of package width differences in ADM3202 variants?

A: ADM3202ARNZ variants use 16-SOIC with 0.154" width, matching the original ICL3232IBN-T footprint. ADM3202ARWZ variants use 16-SOIC with 0.295" width, requiring PCB layout verification before substitution. Confirm package dimensions against your board design before selection.

Q: Why do some ADM3202 parts have different packaging designations (REEL, REEL7)?

A: These designations indicate distribution format and tape specifications. REEL and REEL7 represent different reel configurations for automated assembly. Both formats contain electrically identical components; selection depends on your assembly equipment compatibility and procurement preferences.

Q: Is ADM3232EARNZ a suitable substitute?

A: ADM3232EARNZ is a functional substitute with identical receiver hysteresis (300 mV) but operates at 235 kbps, below the original 250 kbps specification. This part is suitable only if your application does not require the full 250 kbps data rate. For applications requiring or exceeding 250 kbps, use ICL3232IBNZ-T or ADM3202 variants instead.

Q: What does RoHS compliance mean for component selection?

A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances standards, eliminating lead and other restricted materials. The original ICL3232IBN-T is RoHS non-compliant. All recommended substitutes are ROHS3-compliant, making them suitable for modern manufacturing and environmental regulations.

Q: Are there inventory considerations when selecting a substitute?

A: Yes. ICL3232IBNZ-T has the highest inventory (25,200 units), followed by ADM3202ARNZ-REEL (44,100 units). If immediate availability is critical, these options provide the best supply assurance. Verify current inventory status with your supplier before finalizing procurement decisions.

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