SN65C3223DBR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SN65C3223DBR is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 20-SSOP package. This interface IC operates across a 3V to 5.5V supply range with a 1Mbps data rate and is designed for serial communication applications requiring RS232 protocol compliance. The part is currently in Last Time Buy status, indicating production discontinuation. Identifying equivalent and substitute parts ensures design continuity and supply chain flexibility for ongoing production and maintenance applications.

Substiute Parts

SN65C3223DBR

Texas InstrumentsIn Stock: 5608SN65C3223DBR Datasheet

Current PartRFQ

TRSF3223EIPWR

Texas InstrumentsIn Stock: 9936TRSF3223EIPWR Datasheet

MFR RecommendedRFQ

MAX3222EEAP+T

Analog Devices Inc./Maxim IntegratedIn Stock: 6944MAX3222EEAP+T Datasheet

Parametric EquivalentRFQ

MAX3225EAAP+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1003MAX3225EAAP+T Datasheet

Parametric EquivalentRFQ

MAX3225EAP+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3133MAX3225EAP+T Datasheet

Parametric EquivalentRFQ

MAX3225EEAP+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2143MAX3225EEAP+T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN65C3223DBR is determined by strict equivalence across the following critical parameters:

• Protocol Compatibility: RS232 full-duplex transceiver functionality
• Channel Configuration: 2 drivers and 2 receivers (2/2)
• Electrical Specifications: 3V to 5.5V supply voltage, 1Mbps data rate, 500 mV receiver hysteresis
• Thermal Range: -40°C to 85°C operating temperature
• Package Compatibility: Surface mount technology with matching pinout and electrical characteristics
• Compliance: ROHS3 compliance and MSL Level 1 rating

Substitute parts are grouped into two categories:

1. Manufacturer Recommended Equivalent: TRSF3223EIPWR (Texas Instruments) — functionally identical with package variation (20-TSSOP vs. 20-SSOP)
2. Parametric Equivalents: MAX3222EEAP+T, MAX3225EAAP+T, MAX3225EAP+T, MAX3225EEAP+T (Analog Devices Inc./Maxim Integrated) — identical electrical and functional specifications with package compatibility

Parameter Comparison

Engineering Selection Recommendations

For Direct Package Replacement (20-SSOP): Select from the MAX3225 series (MAX3225EAAP+T, MAX3225EAP+T, MAX3225EEAP+T) or MAX3222EEAP+T. These parts maintain identical package geometry, pinout, and electrical specifications. All are in Active product status with established supply availability. ROHS3 compliance and MSL Level 1 rating are maintained across all options.

For Manufacturer Continuity (Texas Instruments): The TRSF3223EIPWR is the manufacturer-recommended equivalent from Texas Instruments. This part maintains all electrical and functional specifications but uses a 20-TSSOP package (0.173" width vs. 0.209" for SSOP). PCB layout modification is required for this substitution due to package footprint differences. This part is in Active status with higher inventory availability (9879 pcs).

For Supply Chain Flexibility: The Analog Devices Inc./Maxim Integrated MAX3225 series offers multiple packaging options (Tape & Reel and Cut Tape & Digi-Reel) and higher cumulative inventory levels across variants. All maintain full electrical and compliance equivalence to the SN65C3223DBR.

Frequently Asked Questions (FAQ)

Q: Can the TRSF3223EIPWR directly replace the SN65C3223DBR without PCB modification? A: No. While electrically and functionally equivalent, the TRSF3223EIPWR uses a 20-TSSOP package (4.40mm width) compared to the SN65C3223DBR's 20-SSOP package (5.30mm width). PCB footprint redesign is required.

Q: Are the MAX3225 variants interchangeable with each other? A: Yes. MAX3225EAAP+T, MAX3225EAP+T, and MAX3225EEAP+T are parametrically identical. Differences exist only in packaging format (Tape & Reel vs. Cut Tape & Digi-Reel) and inventory levels. Selection depends on procurement and assembly requirements.

Q: What is the difference between MAX3222EEAP+T and MAX3225 variants? A: Both are parametrically equivalent to the SN65C3223DBR with identical electrical specifications, supply voltage, data rate, and package geometry. Selection between them depends on availability and procurement lead times.

Q: Do all substitute parts maintain ROHS3 compliance? A: Yes. All listed substitute parts are ROHS3 compliant with MSL Level 1 rating, matching the original SN65C3223DBR specifications.

Q: Is pinout compatibility guaranteed across all substitutes? A: Pinout compatibility is guaranteed for all 20-SSOP packaged parts (MAX3222EEAP+T, MAX3225EAAP+T, MAX3225EAP+T, MAX3225EEAP+T). The TRSF3223EIPWR in 20-TSSOP package requires pinout verification due to package differences.

Q: What is the inventory status for each substitute? A: TRSF3223EIPWR: 9879 pcs; MAX3222EEAP+T: 6900 pcs; MAX3225EAAP+T: 911 pcs; MAX3225EAP+T: 3050 pcs; MAX3225EEAP+T: 2116 pcs. All are in Active product status with current availability.