SN75C3238PWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SN75C3238PWR is a full-duplex RS232 transceiver manufactured by Texas Instruments, configured with 5 drivers and 3 receivers in a 28-TSSOP surface mount package. This device operates across a 3V to 5.5V supply voltage range and supports data rates up to 1 Mbps. The part is currently in Last Time Buy status, making equivalent and substitute parts necessary for ongoing design support and procurement planning.

Substiute Parts

SN75C3238PWR

Texas InstrumentsIn Stock: 2232SN75C3238PWR Datasheet

Current PartRFQ

SN65C3238PWR

Texas InstrumentsIn Stock: 4097SN65C3238PWR Datasheet

MFR RecommendedRFQ

SP3238EEY-L

MaxLinear, Inc.In Stock: 2409SP3238EEY-L Datasheet

MFR RecommendedRFQ

SP3238EEY-L/TR

MaxLinear, Inc.In Stock: 8300SP3238EEY-L/TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN75C3238PWR is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Protocol: RS232
• Number of Drivers/Receivers: 5/3 configuration
• Duplex: Full
• Package / Case: 28-TSSOP (0.173", 4.40mm Width)
• Voltage - Supply: 3V ~ 5.5V
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant or equivalent

Allowable Variations:

• Receiver Hysteresis: 300 mV to 500 mV (within acceptable RS232 specification tolerance)
• Data Rate: 250 kbps to 1 Mbps (backward compatible for lower-speed applications)
• Operating Temperature: Extended ranges acceptable for designs not requiring the full 0°C ~ 70°C specification
• Packaging Format: Tape & Reel (TR) or Tube acceptable for equivalent functionality

All identified substitute parts maintain functional equivalence within these parameters.

Parameter Comparison

Engineering Selection Recommendations

SN65C3238PWR (Texas Instruments) is the primary recommended substitute. This part maintains identical electrical specifications to the SN75C3238PWR while offering Active product status and extended operating temperature range (-40°C ~ 85°C). The SN65C3238PWR is suitable for designs requiring the full 1 Mbps data rate and 300 mV receiver hysteresis specification.

SP3238EEY-L/TR (MaxLinear, Inc.) is an alternative substitute for applications where extended temperature operation and Active product status are required. This part operates at 250 kbps data rate with 500 mV receiver hysteresis. The SP3238EEY-L/TR is available in Tape & Reel packaging format, matching the original part's distribution method.

SP3238EEY-L (MaxLinear, Inc.) provides equivalent functionality to SP3238EEY-L/TR with identical electrical specifications but is supplied in Tube packaging. Selection between SP3238EEY-L and SP3238EEY-L/TR depends on procurement and assembly requirements.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and 28-TSSOP package compatibility with the original SN75C3238PWR design.

Frequently Asked Questions (FAQ)

Q: Can SN65C3238PWR directly replace SN75C3238PWR in existing designs?

A: Yes. The SN65C3238PWR maintains identical pin configuration, package footprint (28-TSSOP), and core electrical specifications (5/3 RS232 transceiver, 1 Mbps data rate, 3V ~ 5.5V supply). The extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C) provides additional design margin without requiring circuit modifications.

Q: What is the difference between SP3238EEY-L and SP3238EEY-L/TR?

A: Both parts are functionally identical MaxLinear RS232 transceivers with 5/3 configuration and 28-TSSOP packaging. The primary difference is packaging format: SP3238EEY-L is supplied in Tube, while SP3238EEY-L/TR is supplied in Tape & Reel. Selection depends on assembly line requirements and procurement preferences.

Q: Are there performance differences between the Texas Instruments and MaxLinear substitutes?

A: The MaxLinear SP3238 series operates at 250 kbps maximum data rate with 500 mV receiver hysteresis, compared to the Texas Instruments parts at 1 Mbps with 300 mV hysteresis. For applications requiring full 1 Mbps operation, SN65C3238PWR is the appropriate choice. For designs operating below 250 kbps, SP3238EEY-L or SP3238EEY-L/TR are suitable alternatives.

Q: Do all substitute parts meet RoHS compliance requirements?

A: Yes. SN65C3238PWR, SP3238EEY-L, and SP3238EEY-L/TR are all RoHS compliant. SN75C3238PWR and SN65C3238PWR carry ROHS3 certification, while SP3238EEY-L/TR carries RoHS Compliant status. All parts maintain MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute is recommended for new designs?

A: SN65C3238PWR is recommended for new designs requiring 1 Mbps operation and extended temperature range. This part offers Active product status, ensuring long-term availability and support. SP3238EEY-L/TR is an alternative for designs with lower data rate requirements (≤250 kbps) and preference for MaxLinear components.