SN75196DWR RS232 Transceiver - Equivalent & Substitute Parts

Part Overview

The SN75196DWR 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. The identification of equivalent and substitute parts is necessary to ensure design continuity and procurement availability for applications requiring RS232 interface functionality with these specific electrical and mechanical characteristics.

Substiute Parts

SN75196DWR

Texas InstrumentsIn Stock: 3388SN75196DWR Datasheet

Current PartRFQ

MAX207IDWR

Texas InstrumentsIn Stock: 1146MAX207IDWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75196DWR is determined by the following critical parameters:

• Protocol Compatibility: RS232 full-duplex transceiver functionality
• Driver/Receiver Configuration: 5 drivers and 3 receivers
• Receiver Hysteresis: 500 mV threshold specification
• Supply Voltage Range: Minimum 4.5V operation capability
• Surface Mount Packaging: SOIC package family with 7.50mm width
• Compliance Standards: ROHS3 compliance and MSL Level 1 rating

The MAX207IDWR qualifies as a substitute based on matching these core functional and electrical parameters. Variations in package pin count (24-SOIC versus 20-SOIC), supply voltage range tolerance, and operating temperature range represent acceptable engineering trade-offs when the primary functional requirements are maintained.

Parameter Comparison

Engineering Selection Recommendations

The MAX207IDWR is available as an active product with current manufacturing status, providing supply chain continuity for applications currently using the SN75196DWR. Both components maintain ROHS3 compliance and MSL Level 1 ratings, ensuring equivalent environmental and regulatory standing.

The MAX207IDWR operates across an extended temperature range (-40°C to 85°C) compared to the SN75196DWR (0°C to 70°C), offering broader thermal performance capability. The supply voltage range of the MAX207IDWR (4.75V to 5.25V) is narrower than the SN75196DWR (4.5V to 5.5V); applications requiring operation below 4.75V or above 5.25V must retain the original SN75196DWR specification.

The package transition from 20-SOIC to 24-SOIC requires PCB layout modification. Pin-to-pin functional mapping must be verified during design integration to ensure correct signal routing and ground plane connectivity.

Frequently Asked Questions (FAQ)

Q: Can the MAX207IDWR directly replace the SN75196DWR without PCB modification?

A: The MAX207IDWR uses a 24-SOIC package versus the 20-SOIC package of the SN75196DWR. PCB footprint modification is required. Pin assignments must be verified against both datasheets to ensure correct signal routing.

Q: What is the impact of the narrower supply voltage range on the MAX207IDWR?

A: The MAX207IDWR operates between 4.75V and 5.25V, while the SN75196DWR operates between 4.5V and 5.5V. If your application requires operation below 4.75V or above 5.25V, the MAX207IDWR is not suitable. Verify your power supply specifications before substitution.

Q: Are both parts compliant with current environmental regulations?

A: Both the SN75196DWR and MAX207IDWR are ROHS3 compliant and carry MSL Level 1 ratings, meeting current environmental and moisture sensitivity standards.

Q: What is the significance of the extended operating temperature range of the MAX207IDWR?

A: The MAX207IDWR supports operation from -40°C to 85°C, compared to the SN75196DWR range of 0°C to 70°C. This extended range provides additional thermal margin for applications operating in extreme environments, though it is not required for standard industrial temperature specifications.

Q: Why is the SN75196DWR marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this component. The MAX207IDWR, with Active product status, represents the current manufacturing alternative for RS232 transceiver applications requiring 5/3 driver/receiver configuration.