SN75196DW RS232 Transceiver - Equivalent & Substitute Parts

Part Overview

The SN75196DW is a full-duplex RS232 transceiver manufactured by Texas Instruments, featuring 5 drivers and 3 receivers in a 20-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The SN75196DW operates within a 4.5V to 5.5V supply voltage range and supports full-duplex RS232 communication with 500 mV receiver hysteresis. Due to its Last Time Buy status, identifying functionally equivalent substitute parts is essential for ongoing design support and production continuity.

Substiute Parts

SN75196DW

Texas InstrumentsIn Stock: 5932SN75196DW Datasheet

Current PartRFQ

MAX207IDWR

Texas InstrumentsIn Stock: 1146MAX207IDWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75196DW is determined by the following critical parameters:

• Protocol Compatibility: Both main and substitute parts must support RS232 full-duplex communication
• Driver/Receiver Configuration: The 5/3 driver/receiver count must be maintained for circuit compatibility
• Receiver Hysteresis: 500 mV specification ensures signal integrity in RS232 applications
• Supply Voltage Range: Substitute parts must operate within or encompass the 4.5V to 5.5V range
• Mounting Type: Surface mount technology must be preserved for PCB assembly compatibility
• Package Footprint: SOIC package family with 7.50mm width maintains mechanical compatibility
• Compliance Standards: RoHS3 compliance and MSL rating ensure regulatory and environmental compatibility

The MAX207IDWR qualifies as a substitute based on these parameters: it maintains the 5/3 transceiver configuration, RS232 protocol support, 500 mV receiver hysteresis, full-duplex operation, surface mount SOIC packaging, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The MAX207IDWR is an active production substitute for the SN75196DW. Both components are manufactured by Texas Instruments and maintain identical functional specifications for RS232 transceiver operation. The MAX207IDWR offers extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and improved supply voltage tolerance (4.75V to 5.25V), providing enhanced performance margins in industrial applications.

The primary design consideration is package transition from 20-SOIC to 24-SOIC. While both packages maintain the same 7.50mm width and surface mount technology, the 24-pin configuration requires PCB layout modification. The MAX207IDWR's Active product status ensures long-term availability and supply chain continuity, contrasting with the SN75196DW's Last Time Buy classification.

Both components maintain equivalent RoHS3 compliance and MSL ratings, supporting identical environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the MAX207IDWR directly replace the SN75196DW without circuit modification?

A: Functional substitution is supported due to identical driver/receiver configuration (5/3), protocol (RS232), and electrical specifications. However, package transition from 20-SOIC to 24-SOIC requires PCB layout redesign. Pin-to-pin compatibility must be verified against specific application schematics.

Q: What are the key differences between these two parts?

A: The MAX207IDWR provides extended operating temperature range (-40°C to 85°C) and narrower supply voltage tolerance (4.75V to 5.25V) compared to the SN75196DW (0°C to 70°C, 4.5V to 5.5V). Package pin count increases from 20 to 24 pins. The MAX207IDWR maintains Active product status, ensuring ongoing availability.

Q: Are there supply voltage compatibility concerns?

A: The MAX207IDWR supply range (4.75V to 5.25V) is a subset of the SN75196DW range (4.5V to 5.5V). Applications operating at the lower boundary (4.5V to 4.75V) or upper boundary (5.25V to 5.5V) of the original specification require voltage margin verification.

Q: How does the package change affect PCB design?

A: The transition from 20-SOIC to 24-SOIC requires footprint modification and trace routing adjustment. Both packages maintain 7.50mm width and surface mount technology, but pin count and spacing differ. Layout redesign and validation are necessary.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SN75196DW and MAX207IDWR are ROHS3 compliant with MSL rating of 1 (Unlimited), supporting identical environmental and regulatory requirements.

Q: What is the significance of Last Time Buy status for the SN75196DW?

A: Last Time Buy indicates discontinued production with limited remaining inventory. Transition to the MAX207IDWR is recommended for new designs and long-term production continuity, as the SN75196DW will eventually become unavailable.