GD75232N RS232 Transceiver - Equivalent & Substitute Parts

Part Overview

The GD75232N is a full-duplex RS232 transceiver IC manufactured by Texas Instruments, featuring 3 drivers and 5 receivers in a 20-pin DIP package. This component is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. The GD75232N operates across a wide supply voltage range (5V, ±7.5V to ±15V) and supports data rates up to 120 Kbps, making it suitable for legacy serial communication applications requiring through-hole mounting.

Identifying substitute parts is necessary due to the Last Time Buy status, which restricts future availability. Alternative configurations of the same base product (GD75232) are available in different package types and with Active product status, ensuring long-term supply continuity.

Substiute Parts

GD75232N

Texas InstrumentsIn Stock: 1259GD75232N Datasheet

Current PartRFQ

GD75232PWR

Texas InstrumentsIn Stock: 74283GD75232PWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GD75232N is determined by strict equivalence across the following electrical and mechanical parameters:

• Protocol and Functionality: Both parts must implement RS232 transceiver protocol with identical driver/receiver configuration (3/5)
• Electrical Specifications: Supply voltage range, data rate, receiver hysteresis, and operating temperature must match exactly
• Base Product Number: Both parts must share the GD75232 base product designation, confirming functional equivalence
• Compliance Standards: RoHS3 and REACH status must be maintained
• Manufacturer: Texas Instruments as the original manufacturer

The GD75232PWR qualifies as a direct substitute based on these criteria. The primary difference is the package type and mounting method, which does not affect electrical performance or functional compatibility when proper PCB design accommodates the surface-mount configuration.

Parameter Comparison

Engineering Selection Recommendations

The GD75232PWR is the manufacturer-recommended substitute for the GD75232N. Both parts maintain identical electrical specifications and compliance certifications (ROHS3 and REACH Unaffected). The GD75232PWR carries Active product status, ensuring continued availability and supply chain stability, whereas the GD75232N is Last Time Buy with limited inventory.

Selection between these parts depends on PCB design constraints:

• GD75232N: Suitable for existing through-hole designs or applications where through-hole mounting is required
• GD75232PWR: Recommended for new designs or redesigns, offering surface-mount integration and higher inventory availability

Both parts are electrically and functionally equivalent and will perform identically in RS232 transceiver applications within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the GD75232PWR directly replace the GD75232N in an existing circuit?

A: Electrically and functionally, yes. Both parts implement identical RS232 transceiver specifications with 3 drivers, 5 receivers, and full-duplex operation. However, the GD75232PWR uses surface-mount packaging (20-TSSOP) while the GD75232N uses through-hole packaging (20-DIP). PCB layout and footprint must be redesigned to accommodate the different package type.

Q: What is the difference between the 20-DIP and 20-TSSOP packages?

A: The 20-DIP (Dual In-line Package) is a through-hole component with 0.300" lead spacing, suitable for breadboards and traditional PCB designs. The 20-TSSOP (Thin Shrink Small Outline Package) is a surface-mount component with 0.173" width, requiring SMT assembly equipment and offering higher density PCB layouts.

Q: Are there any electrical performance differences between GD75232N and GD75232PWR?

A: No. Both parts share identical electrical specifications: 120 Kbps data rate, 500 mV receiver hysteresis, 5V and ±7.5V to ±15V supply voltage range, and 0°C to 70°C operating temperature.

Q: Why is the GD75232N marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production of this specific package variant. The GD75232PWR (surface-mount version) remains in active production, providing a path for continued supply of the GD75232 transceiver functionality.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the GD75232N and GD75232PWR are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Can I use the GD75232PWR in a design originally specified for the GD75232N?

A: Yes, provided the PCB design is modified to accommodate surface-mount assembly. The electrical and functional performance will be identical. Consult the Texas Instruments datasheets for pin configuration and PCB layout guidelines specific to the 20-TSSOP package.