ICL3245CAZ Equivalent & Substitute Parts

Part Overview

The ICL3245CAZ is a 3/5 Transceiver Full RS232 interface IC manufactured by Renesas Electronics Corporation in 28-SSOP surface mount packaging. This component is actively produced and widely used in RS232 communication applications requiring full-duplex serial data transmission. Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for compatible alternatives with equivalent electrical performance.

Key Parameters

Parameter	ICL3245CAZ Value
Manufacturer	Renesas Electronics Corporation
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	3/5
Duplex	Full
Data Rate	1 Mbps
Receiver Hysteresis	500 mV
Voltage Supply Range	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	28-SSOP (0.209", 5.30mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	2 (1 Year)
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the ICL3245CAZ is determined by the following critical parameters:

Primary Substitution Criteria:

Protocol: RS232
Number of Drivers/Receivers: 3/5
Duplex: Full
Voltage Supply Range: 3V ~ 5.5V
Package / Case: 28-SSOP (0.209", 5.30mm Width)
Mounting Type: Surface Mount

Secondary Compatibility Parameters:

Data Rate: 1 Mbps (minimum requirement)
Receiver Hysteresis: 500 mV (nominal)
RoHS Status: ROHS3 Compliant

Parts meeting all primary criteria are classified as direct substitutes. Parts with equivalent electrical performance but different product status or packaging format are listed as alternatives. The ICL3245CAZ operates at 1 Mbps with 500 mV receiver hysteresis; substitute parts operating at lower data rates (250 kbps) or with different hysteresis values remain functionally compatible within the 28-SSOP package constraint.

Parameter Comparison

Part Number	Manufacturer	Data Rate	Receiver Hysteresis	Operating Temperature	Packaging	Product Status	Inventory (Pcs)
ICL3245CAZ	Renesas Electronics	1 Mbps	500 mV	0°C ~ 70°C	Tube	Active	1,980
MAX3243CDB	Texas Instruments	250 kbps	300 mV	0°C ~ 70°C	Tube	Obsolete	4,550
MAX3243CDBR	Texas Instruments	250 kbps	300 mV	0°C ~ 70°C	Cut Tape (CT) & Digi-Reel®	Active	185,200
MAX3243ECAI+	Analog Devices Inc./Maxim Integrated	250 kbps	500 mV	0°C ~ 70°C	Tube	Active	3,284
MAX3243ECAI+T	Analog Devices Inc./Maxim Integrated	250 kbps	500 mV	0°C ~ 70°C	Cut Tape (CT) & Digi-Reel®	Active	1,700
MAX3244ECAI+	Analog Devices Inc./Maxim Integrated	250 kbps	500 mV	0°C ~ 70°C	Tube	Active	2,200
MAX3244ECAI+T	Analog Devices Inc./Maxim Integrated	250 kbps	500 mV	0°C ~ 70°C	Tape & Reel (TR)	Active	3,580
MAX3245EEAI+	Analog Devices Inc./Maxim Integrated	1 Mbps	500 mV	-40°C ~ 85°C	Tube	Active	2,136
SN75C3243DBR	Texas Instruments	1 Mbps	500 mV	0°C ~ 70°C	Tape & Reel (TR)	Active	4,113
SP3243EUCA-L/TR	MaxLinear, Inc.	1 Mbps	300 mV	0°C ~ 70°C	Tape & Reel (TR)	Active	1,499
MAX3245EAI+	Analog Devices Inc./Maxim Integrated	1 Mbps	500 mV	-40°C ~ 85°C	Tube	Active	129,050

Engineering Selection Recommendations

Direct Substitutes (Equivalent Performance):

Parts meeting all primary substitution criteria with matching data rate and receiver hysteresis specifications are:

MAX3245EAI+ (Analog Devices Inc./Maxim Integrated): Active product status, 1 Mbps data rate, 500 mV hysteresis, extended operating temperature range (-40°C ~ 85°C), highest inventory availability (129,050 pcs), Tube packaging
SN75C3243DBR (Texas Instruments): Active product status, 1 Mbps data rate, 500 mV hysteresis, Tape & Reel packaging, 4,113 pcs available
SP3243EUCA-L/TR (MaxLinear, Inc.): Active product status, 1 Mbps data rate, Tape & Reel packaging, 1,499 pcs available

Compatible Alternatives (Reduced Data Rate):

Parts with 250 kbps data rate remain functionally compatible within RS232 protocol constraints:

MAX3243ECAI+ (Analog Devices Inc./Maxim Integrated): Active status, 500 mV hysteresis, Tube packaging, 3,284 pcs
MAX3243CDBR (Texas Instruments): Active status, 300 mV hysteresis, Cut Tape & Digi-Reel packaging, 185,200 pcs (highest availability in this category)
MAX3244ECAI+ and MAX3244ECAI+T (Analog Devices Inc./Maxim Integrated): Active status, 500 mV hysteresis, multiple packaging options

Extended Temperature Range Option:

MAX3245EEAI+ (Analog Devices Inc./Maxim Integrated): Active status, 1 Mbps data rate, 500 mV hysteresis, extended operating temperature (-40°C ~ 85°C), suitable for applications requiring wider temperature performance

Obsolete Part:

MAX3243CDB (Texas Instruments): Obsolete product status; use only if existing inventory is acceptable and no active alternatives are available

All substitute parts maintain ROHS3 compliance and equivalent package dimensions (28-SSOP, 0.209", 5.30mm Width).

Frequently Asked Questions (FAQ)

Q: Can I use MAX3243CDBR as a direct replacement for ICL3245CAZ?

A: MAX3243CDBR is functionally compatible but operates at 250 kbps versus the ICL3245CAZ's 1 Mbps data rate. It is suitable for applications where lower data rates are acceptable. The part maintains the same 3/5 transceiver configuration, RS232 protocol, full-duplex operation, and 28-SSOP package. Verify your application's data rate requirements before substitution.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging is suitable for manual assembly and lower-volume production. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging are designed for automated pick-and-place assembly equipment. Select packaging based on your manufacturing process requirements.

Q: Is MAX3245EAI+ a better choice than ICL3245CAZ?

A: MAX3245EAI+ offers identical electrical performance (1 Mbps, 500 mV hysteresis) with an extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C). It is an active product with significantly higher inventory availability (129,050 pcs). Use MAX3245EAI+ if your application requires extended temperature performance or if supply chain availability is a priority.

Q: Why do some substitutes have 300 mV receiver hysteresis instead of 500 mV?

A: Receiver hysteresis affects noise immunity and switching threshold characteristics. Parts with 300 mV hysteresis (MAX3243CDB, MAX3243CDBR, SP3243EUCA-L/TR) provide tighter threshold control. Both 300 mV and 500 mV hysteresis values are within RS232 specification tolerances. Verify your application's noise environment and signal integrity requirements before selecting parts with different hysteresis values.

Q: Can I substitute a part with a lower data rate (250 kbps) in my design?

A: Yes, if your application operates below 250 kbps. RS232 transceivers are backward compatible with lower data rates. However, if your design requires 1 Mbps operation, select only parts rated for 1 Mbps (ICL3245CAZ, MAX3245EEAI+, SN75C3243DBR, SP3243EUCA-L/TR, MAX3245EAI+).

Q: What does "Obsolete" product status mean for MAX3243CDB?

A: Obsolete status indicates the manufacturer has discontinued production. MAX3243CDB should only be used if existing inventory is available and acceptable for your supply chain. For new designs or ongoing production, select active products such as MAX3243CDBR (active equivalent with same electrical specifications).

Q: Are all these parts RoHS3 compliant?

A: Yes, all listed parts maintain ROHS3 compliance, meeting environmental and hazardous substance restrictions for electronic components.

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