SN75C3223PW RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SN75C3223PW is a full-duplex RS232 transceiver manufactured by Texas Instruments, featuring 2 drivers and 2 receivers in a 20-TSSOP surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The SN75C3223PW operates across a 3V to 5.5V supply range with a 1 Mbps data rate and is suitable for legacy system maintenance and component replacement scenarios.

Key Parameters

Parameter	Value
Manufacturer Part Number	SN75C3223PW
Manufacturer	Texas Instruments
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
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SN75C3223PW are grouped based on strict electrical and mechanical compatibility criteria. All substitute parts must meet the following requirements:

Critical Matching Parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Data Rate: 1 Mbps
Voltage - Supply: 3V ~ 5.5V
Package / Case: 20-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount
Receiver Hysteresis: 500 mV (primary criterion) or 300 mV (acceptable variance)

Grouping Categories:

MFR Recommended Substitutes (Active Status): Parts with active product status and full parameter alignment, suitable for new designs and long-term availability.

Parametric Equivalents (Obsolete or Active): Parts matching all critical electrical parameters, including operating temperature range and receiver hysteresis specifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Receiver Hysteresis	Operating Temperature	Packaging	Inventory (Pcs)
SN75C3223PW	Texas Instruments	Obsolete	500 mV	0°C ~ 70°C	Tube	1015
TRSF3223EIPWR	Texas Instruments	Active	500 mV	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	9879
SN75C3223EPW	Texas Instruments	Obsolete	500 mV	0°C ~ 70°C	Tube	1275
SP3223EUEY-L/TR	MaxLinear, Inc.	Active	300 mV	0°C ~ 70°C	Tape & Reel (TR)	8790
MAX3222ECUP+	Analog Devices Inc./Maxim Integrated	Active	500 mV	0°C ~ 70°C	Tube	22335
MAX3225CUP+	Analog Devices Inc./Maxim Integrated	Active	500 mV	0°C ~ 70°C	Tube	4034
MAX3225ECUP+	Analog Devices Inc./Maxim Integrated	Active	500 mV	0°C ~ 70°C	Tube	2000
MAX3232ECUP+	Analog Devices Inc./Maxim Integrated	Active	500 mV	0°C ~ 70°C	Tube	2100

Engineering Selection Recommendations

For Direct Replacement (Identical Operating Temperature Range):

SN75C3223EPW is a parametric equivalent with identical electrical specifications and operating temperature range (0°C ~ 70°C). Both parts are obsolete but maintain full compatibility. This option is suitable when the original operating temperature specification must be preserved.

For Active Product Status with Extended Temperature Range:

TRSF3223EIPWR is the MFR recommended substitute from Texas Instruments with active product status. It provides an extended operating temperature range (-40°C ~ 85°C) and maintains all critical electrical parameters. This part is preferred for new production and long-term availability assurance.

For Active Product Status with Equivalent Electrical Performance:

MAX3222ECUP+, MAX3225CUP+, MAX3225ECUP+, and MAX3232ECUP+ are all active Analog Devices/Maxim Integrated parts with full parameter alignment and 500 mV receiver hysteresis matching the original specification. These parts offer superior inventory availability and long-term product support.

For Alternative Manufacturer with Acceptable Parameter Variance:

SP3223EUEY-L/TR from MaxLinear, Inc. is an active substitute with 300 mV receiver hysteresis (versus 500 mV on the original). This represents a tighter input threshold specification and is functionally compatible for RS232 applications. This part is suitable when MaxLinear supply chain preference is established.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory and handling compatibility with the original SN75C3223PW.

Frequently Asked Questions (FAQ)

Q: Can I use MAX3222ECUP+ as a direct replacement for SN75C3223PW?

A: Yes. MAX3222ECUP+ matches all critical electrical parameters: RS232 protocol, 2/2 driver/receiver configuration, full duplex operation, 1 Mbps data rate, 3V ~ 5.5V supply voltage, 500 mV receiver hysteresis, and 0°C ~ 70°C operating temperature. The 20-TSSOP package is identical. This is a parametric equivalent suitable for direct substitution.

Q: What is the difference between TRSF3223EIPWR and SN75C3223PW?

A: TRSF3223EIPWR is functionally equivalent but offers an extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C) and active product status. All other electrical specifications are identical. If your application operates within 0°C ~ 70°C, both parts are interchangeable. TRSF3223EIPWR is recommended for new designs due to active status and extended temperature capability.

Q: Why does SP3223EUEY-L/TR have 300 mV receiver hysteresis instead of 500 mV?

A: SP3223EUEY-L/TR from MaxLinear, Inc. is designed with tighter input threshold specifications (300 mV hysteresis). This represents a more sensitive receiver input stage. For standard RS232 applications, this variance is functionally acceptable and does not compromise compatibility. The part remains a valid substitute if MaxLinear supply chain is preferred.

Q: Are all substitute parts available in the same packaging?

A: All substitute parts use the 20-TSSOP surface mount package with identical dimensions (0.173", 4.40mm Width). However, packaging format differs: some are supplied in Tube, others in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel®. Verify packaging format matches your assembly process requirements before procurement.

Q: Which substitute part has the best inventory availability?

A: MAX3222ECUP+ has the highest inventory level at 22,335 pieces. TRSF3223EIPWR (9,879 pieces) and SP3223EUEY-L/TR (8,790 pieces) also offer strong availability. All three are active products with long-term supply assurance.

Q: Can I use these substitutes in legacy systems currently running SN75C3223PW?

A: Yes, all listed substitutes are pin-compatible and electrically equivalent within the specified parameters. For systems operating within 0°C ~ 70°C, direct substitution is supported. For systems requiring extended temperature operation, TRSF3223EIPWR is the recommended choice.

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