GD75323DW Equivalent & Substitute Parts

Part Overview

The GD75323DW is a full-duplex RS232 transceiver manufactured by Texas Instruments, configured with 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 remaining inventory of 1215 pieces. The GD75323DW operates within the 4.5V to 5.5V supply voltage range and supports data rates up to 120 Kbps with a receiver hysteresis specification of 500 mV. Identifying equivalent and substitute parts is necessary due to the Last Time Buy status, which restricts long-term availability for new designs and production requirements.

Substiute Parts

GD75323DW

Texas InstrumentsIn Stock: 1313GD75323DW Datasheet

Current PartRFQ

GD75232DBR

Texas InstrumentsIn Stock: 43310GD75232DBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GD75323DW is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Protocol: RS232 full-duplex transceiver
• Driver/Receiver Configuration: Minimum 5 drivers and 3 receivers (or equivalent channel count)
• Data Rate: 120 Kbps or higher
• Receiver Hysteresis: 500 mV
• Operating Temperature Range: 0°C ~ 70°C or wider
• Supply Voltage Compatibility: Must operate within or encompass 4.5V ~ 5.5V range
• Mounting Type: Surface Mount
• RoHS Compliance: ROHS3 Compliant

Secondary Considerations:

• Package form factor (SOIC, SSOP, or equivalent)
• Moisture Sensitivity Level
• REACH and ECCN compliance status

The GD75232DBR qualifies as a manufacturer-recommended substitute based on matching protocol, duplex mode, receiver hysteresis, data rate, operating temperature, mounting type, and compliance certifications. The GD75232DBR features a 3/5 driver/receiver configuration (inverse of the main part) in a 20-SSOP package with expanded supply voltage range (5V, ±7.5V ~ 15V) and Active product status.

Parameter Comparison

Engineering Selection Recommendations

The GD75232DBR is the manufacturer-recommended substitute for the GD75323DW. Selection of this alternative is supported by the following factors:

Compliance and Regulatory Status: Both parts maintain ROHS3 compliance, REACH Unaffected status, and EAR99 ECCN classification, ensuring regulatory continuity in applications requiring these certifications.

Product Lifecycle: The GD75232DBR carries Active product status, providing assured long-term availability and supply chain stability compared to the Last Time Buy status of the GD75323DW. This status change is the primary driver for substitution in new designs and ongoing production.

Electrical Compatibility: Both transceivers operate at identical data rates (120 Kbps), receiver hysteresis (500 mV), and operating temperature ranges (0°C ~ 70°C). The GD75232DBR supply voltage range (5V, ±7.5V ~ 15V) encompasses the GD75323DW range (4.5V ~ 5.5V), providing broader operational flexibility.

Channel Configuration: The GD75232DBR features an inverted driver/receiver configuration (3/5 versus 5/3). Circuit redesign may be required to accommodate this channel reversal, depending on application-specific signal routing and interface requirements.

Package Transition: The GD75232DBR uses a 20-SSOP package (5.30mm width) compared to the 20-SOIC package (7.50mm width) of the GD75323DW. PCB layout modifications are necessary to accommodate the different package footprint and pin pitch.

Frequently Asked Questions (FAQ)

Q: Can the GD75232DBR directly replace the GD75323DW without circuit modifications?

A: Direct pin-for-pin replacement is not possible due to two key differences: the inverted driver/receiver configuration (3/5 versus 5/3) and the different package form factors (20-SSOP versus 20-SOIC). Circuit redesign is required to accommodate the channel reversal and PCB layout must be updated for the new package footprint.

Q: What is the significance of the Last Time Buy status on the GD75323DW?

A: Last Time Buy indicates that Texas Instruments has discontinued production of this part. Current inventory (1215 pieces) represents the final available stock. Once depleted, the GD75323DW will no longer be available for purchase. New designs should transition to the GD75232DBR or equivalent alternatives.

Q: Are the supply voltage ranges compatible between these two parts?

A: The GD75232DBR supply voltage range (5V, ±7.5V ~ 15V) is broader than the GD75323DW range (4.5V ~ 5.5V). The GD75232DBR can operate at the GD75323DW voltage levels, but applications using the extended voltage range of the substitute must verify circuit compatibility with the higher voltage capability.

Q: What package considerations apply when substituting the GD75232DBR?

A: The GD75232DBR uses a 20-SSOP package with a 5.30mm width, compared to the 20-SOIC package with a 7.50mm width of the GD75323DW. The SSOP package has a smaller footprint and different pin pitch. PCB redesign, including trace routing and component placement adjustments, is necessary for this substitution.

Q: Do both parts maintain the same compliance certifications?

A: Yes. Both the GD75323DW and GD75232DBR are ROHS3 compliant, REACH Unaffected, and classified as EAR99 for export control purposes. Regulatory compliance is maintained across this substitution.

Q: What is the primary reason to substitute the GD75323DW with the GD75232DBR?

A: The primary reason is product lifecycle management. The GD75323DW is Last Time Buy with limited remaining inventory, while the GD75232DBR is Active with assured long-term availability. For new designs and ongoing production, the GD75232DBR provides supply chain continuity and eliminates the risk of component obsolescence.