SN65C3232EDB RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SN65C3232EDB is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-SSOP package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The SN65C3232EDB operates across a 3V to 5.5V supply range with a 1Mbps data rate and is suitable for surface mount applications requiring RS232 serial communication interfaces.

Key Parameters

Parameter	Value
Transceiver Type	2/2 Full-Duplex RS232
Data Rate	1Mbps
Supply Voltage Range	3V ~ 5.5V
Operating Temperature Range	-40°C ~ 85°C
Receiver Hysteresis	300 mV
Package Type	16-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SN65C3232EDB is determined by the following critical parameters:

Primary Substitution Criteria:

Protocol: RS232
Drivers/Receivers Configuration: 2/2
Duplex Mode: Full
Supply Voltage Range: 3V ~ 5.5V
Mounting Type: Surface Mount
Package/Case: 16-SSOP or 16-TSSOP (mechanically compatible)

Secondary Considerations:

Data Rate: Minimum 1Mbps (SN65C3232EDB specification)
Operating Temperature: -40°C ~ 85°C preferred for extended industrial range
Receiver Hysteresis: 300 mV or 500 mV acceptable
Product Status: Active status preferred for long-term availability

Substitute parts are grouped into two categories based on package compatibility: 16-SSOP direct replacements and 16-TSSOP alternatives with equivalent electrical performance.

Parameter Comparison

Part Number	Manufacturer	Package	Data Rate	Operating Temp	Receiver Hysteresis	Product Status	Inventory
SN65C3232EDB	Texas Instruments	16-SSOP	1Mbps	-40°C ~ 85°C	300 mV	Obsolete	1104 Pcs
SP3232EUEA-L/TR	MaxLinear, Inc.	16-SSOP	1Mbps	-40°C ~ 85°C	300 mV	Active	2300 Pcs
ICL3232CVZ	Renesas Electronics	16-TSSOP	250kbps	0°C ~ 70°C	300 mV	Active	1811 Pcs
ICL3232CVZ-T	Renesas Electronics	16-TSSOP	250kbps	0°C ~ 70°C	300 mV	Active	1424 Pcs
ICL3232ECAZ	Renesas Electronics	16-SSOP	250kbps	0°C ~ 70°C	500 mV	Active	1270 Pcs
ICL3232ECAZ-T	Renesas Electronics	16-SSOP	250kbps	0°C ~ 70°C	500 mV	Active	30400 Pcs
ICL3232ECV-16Z	Renesas Electronics	16-TSSOP	250kbps	0°C ~ 70°C	500 mV	Active	1992 Pcs
ICL3232EIAZ	Renesas Electronics	16-SSOP	250kbps	-40°C ~ 85°C	500 mV	Active	23920 Pcs
ICL3232EIAZ-T	Renesas Electronics	16-SSOP	250kbps	-40°C ~ 85°C	500 mV	Active	30100 Pcs
ICL3232EIV-16Z	Renesas Electronics	16-TSSOP	250kbps	-40°C ~ 85°C	500 mV	Active	1699 Pcs
ICL3232IVZ	Renesas Electronics	16-TSSOP	250kbps	-40°C ~ 85°C	300 mV	Active	4207 Pcs

Engineering Selection Recommendations

Direct 16-SSOP Package Replacement (Highest Compatibility):

SP3232EUEA-L/TR is the primary direct substitute. It maintains the 16-SSOP package footprint, supports 1Mbps data rate, operates across -40°C to 85°C, and carries active product status with ROHS3 compliance. This part provides electrical and mechanical equivalence to the SN65C3232EDB.

Extended Temperature Range Alternatives (16-SSOP):

ICL3232EIAZ and ICL3232EIAZ-T are suitable for applications requiring the -40°C to 85°C operating range in 16-SSOP packaging. Both parts are active, ROHS3 compliant, and feature 500 mV receiver hysteresis. Data rate is specified at 250kbps, which is acceptable for RS232 serial communication applications where the full 1Mbps capability is not required.

16-TSSOP Package Alternatives:

For designs that can accommodate the narrower 16-TSSOP package (0.173" width versus 0.209"), ICL3232IVZ provides -40°C to 85°C operation with 300 mV hysteresis and active status. ICL3232EIV-16Z offers the same temperature range with 500 mV hysteresis. Both are ROHS3 compliant and suitable for space-constrained applications.

Compliance and Availability:

All substitute parts listed are ROHS3 compliant and carry active product status, ensuring long-term availability and regulatory compliance. Parts with Tape & Reel (TR) packaging offer higher inventory levels for production requirements.

Frequently Asked Questions (FAQ)

Q: Can ICL3232 series parts with 250kbps data rate replace the SN65C3232EDB rated at 1Mbps?

A: Yes. The 250kbps specification represents the maximum guaranteed data rate for those parts. RS232 serial communication in most industrial and embedded applications operates at standard baud rates (9600, 19200, 38400, 115200 bps), all of which fall well below 250kbps. The SN65C3232EDB's 1Mbps capability exceeds typical application requirements. ICL3232 series parts are functionally equivalent for standard RS232 implementations.

Q: What is the difference between 16-SSOP and 16-TSSOP packages?

A: Both are 16-pin surface mount packages with identical pin counts and electrical compatibility. The primary difference is physical width: 16-SSOP measures 0.209" (5.30mm) while 16-TSSOP measures 0.173" (4.40mm). PCB footprints are not interchangeable without layout modification. Select based on available board space and existing design constraints.

Q: Are parts with 500 mV receiver hysteresis compatible with designs using 300 mV hysteresis parts?

A: Yes. Receiver hysteresis affects noise immunity during signal transitions. Higher hysteresis (500 mV) provides greater noise rejection but requires larger voltage swings. Both values are within RS232 specification tolerances. Parts with 500 mV hysteresis are suitable replacements in applications where the original 300 mV specification is not a critical design constraint.

Q: Which substitute part offers the best long-term availability?

A: ICL3232EIAZ-T and ICL3232ECAZ-T both show inventory levels exceeding 30,000 units with active product status. These Renesas Electronics parts in Tape & Reel packaging are optimized for production volume requirements and represent the most stable long-term sourcing options.

Q: Does operating temperature range affect RS232 functionality?

A: Operating temperature range defines the environmental conditions under which the part maintains specified electrical performance. The SN65C3232EDB operates -40°C to 85°C. Substitute parts with 0°C to 70°C ranges are suitable for commercial and industrial environments within those limits. Extended temperature parts (-40°C to 85°C) are required for applications with wider environmental exposure or military specifications.

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