SN65C3232EDWR Equivalent & Substitute Parts

Part Overview

The SN65C3232EDWR is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 16-SOIC package. This interface IC operates across a 3V to 5.5V supply range with a 1Mbps data rate and 300mV receiver hysteresis, designed for serial communication applications requiring full RS232 protocol compliance. The part is currently in Last Time Buy status, making equivalent and substitute parts essential for ongoing design support and production continuity.

Key Parameters

Parameter	SN65C3232EDWR
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Drivers/Receivers	2/2
Duplex	Full
Data Rate	1Mbps
Receiver Hysteresis	300mV
Voltage Supply	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package/Case	16-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SN65C3232EDWR is determined by the following critical parameters: RS232 protocol compliance, 2/2 driver/receiver configuration, full-duplex operation, 16-SOIC package footprint, 3V to 5.5V supply voltage range, and surface mount technology. Parts are grouped into two categories based on operational performance alignment:

Category A - Direct Performance Equivalents: Parts matching all electrical specifications including 1Mbps data rate, 300mV receiver hysteresis, and -40°C to 85°C operating temperature range. These provide seamless substitution without design modification.

Category B - Functional Equivalents with Parameter Variance: Parts meeting core RS232 2/2 transceiver requirements and package compatibility but with reduced data rates (250kbps or 235kbps), higher receiver hysteresis (500mV), or narrower operating temperature ranges (0°C to 70°C). These require design review to confirm compatibility with application requirements.

Parameter Comparison

Part Number	Manufacturer	Data Rate	Receiver Hysteresis	Operating Temp	Package Width	Product Status	Inventory
SN65C3232EDWR	Texas Instruments	1Mbps	300mV	-40°C ~ 85°C	7.50mm	Last Time Buy	5880 Pcs
TRSF3232EIDR	Texas Instruments	1Mbps	300mV	-40°C ~ 85°C	3.90mm	Active	3493 Pcs
TRSF3232EIDWR	Texas Instruments	1Mbps	300mV	-40°C ~ 85°C	7.50mm	Last Time Buy	1444 Pcs
ICL3232ECBZ	Renesas Electronics	250kbps	500mV	0°C ~ 70°C	7.50mm	Active	2125 Pcs
ICL3232ECBZ-T	Renesas Electronics	250kbps	500mV	0°C ~ 70°C	7.50mm	Active	1124 Pcs
MAX3232CWE+	Analog Devices/Maxim	235kbps	300mV	0°C ~ 70°C	7.50mm	Active	2540 Pcs
MAX3232CWE+T	Analog Devices/Maxim	235kbps	300mV	0°C ~ 70°C	7.50mm	Active	5384 Pcs
MAX3232ECWE+	Analog Devices/Maxim	1Mbps	500mV	0°C ~ 70°C	7.50mm	Active	2258 Pcs
MAX3232ECWE+T	Analog Devices/Maxim	1Mbps	500mV	0°C ~ 70°C	7.50mm	Active	2136 Pcs
MAX3232EEWE+	Analog Devices/Maxim	250kbps	500mV	-40°C ~ 85°C	7.50mm	Active	787 Pcs
MAX3232EEWE+T	Analog Devices/Maxim	250kbps	500mV	-40°C ~ 85°C	7.50mm	Active	2608 Pcs

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Specification Match):

TRSF3232EIDWR from Texas Instruments provides identical electrical performance to the SN65C3232EDWR with matching 1Mbps data rate, 300mV receiver hysteresis, and -40°C to 85°C operating range. Both parts maintain 16-SOIC package compatibility and ROHS3 compliance. The primary difference is package width (7.50mm vs. 3.90mm for TRSF3232EIDR), making TRSF3232EIDWR the direct footprint equivalent. This part is currently in Active production status, ensuring long-term availability.

Secondary Substitutes (Active Status, Extended Temperature Range):

MAX3232EEWE+ and MAX3232EEWE+T from Analog Devices/Maxim Integrated maintain the -40°C to 85°C operating temperature range required for industrial applications. Both support 1Mbps data rate capability, though with 500mV receiver hysteresis versus the original 300mV specification. These parts are in Active production status with established supply chains.

Functional Alternatives (Active Status, Reduced Performance Parameters):

ICL3232ECBZ and ICL3232ECBZ-T from Renesas Electronics Corporation operate within the 3V to 5.5V supply range with 16-SOIC package compatibility. These parts are limited to 250kbps data rate and 0°C to 70°C operating temperature, requiring design verification for applications demanding extended temperature operation or higher data rates.

MAX3232CWE+ and MAX3232CWE+T from Analog Devices/Maxim Integrated provide 235kbps data rate with 300mV receiver hysteresis but are restricted to 0°C to 70°C operating temperature. These are suitable for commercial-grade applications within standard temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can TRSF3232EIDR replace SN65C3232EDWR directly on the PCB?

A: TRSF3232EIDR matches all electrical specifications and uses the same 16-SOIC package. However, the package width differs (3.90mm vs. 7.50mm). Verify PCB footprint compatibility before substitution. If the footprint is designed for the wider 7.50mm package, use TRSF3232EIDWR instead.

Q: What is the impact of using MAX3232ECWE+T instead of SN65C3232EDWR?

A: MAX3232ECWE+T maintains 1Mbps data rate and 3V to 5.5V supply compatibility. The receiver hysteresis increases from 300mV to 500mV, and the operating temperature range narrows to 0°C to 70°C. Applications operating below 0°C or above 70°C require alternative selection.

Q: Are ICL3232ECBZ parts suitable for high-speed serial communication?

A: ICL3232ECBZ parts are limited to 250kbps data rate, which is significantly lower than the SN65C3232EDWR's 1Mbps capability. These parts are appropriate for legacy systems or applications with lower bandwidth requirements. Verify application data rate requirements before selection.

Q: What packaging options are available for Texas Instruments RS232 transceivers?

A: TRSF3232EIDR is supplied in Cut Tape (CT) & Digi-Reel format with 3.90mm package width. TRSF3232EIDWR is supplied in Cut Tape (CT) & Digi-Reel format with 7.50mm package width. Both maintain identical electrical specifications and 16-SOIC pin configuration.

Q: Which substitute parts have unlimited moisture sensitivity rating?

A: SN65C3232EDWR, TRSF3232EIDR, TRSF3232EIDWR, and all MAX3232 variants carry MSL Rating 1 (Unlimited). ICL3232ECBZ and ICL3232ECBZ-T carry MSL Rating 3 (168 Hours), requiring controlled storage and handling procedures.

Q: Are all listed parts ROHS3 compliant?

A: All parts listed are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

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