Part A
AM26C31CDR
德州儀器
- Lifecycle
- Active
- Stock
- 5213 件
- Package
- SOIC-16
- Series
- 介面-驅動器、接收器、收發器
Replacement verdict
Compatible functional replacement candidate
The AM26C31CDR and AM26C31CDRG4 are functionally equivalent quad differential line drivers sharing identical electrical specifications, logic function, and package footprint; the only distinction is the tape-and-reel packaging suffix, making the AM26C31CDRG4 a direct drop-in replacement for the AM26C31CDR in production and prototyping alike.
Function and Logic Family
High match
Package and Pinout
High match
Electrical Specifications
High match
Packaging and Ordering
High match
Parts at a glance
Part B
AM26C31CDRG4
德州儀器
- Lifecycle
- Active
- Stock
- 7066 件
- Package
- SOIC-16
- Series
- 介面-驅動器、接收器、收發器
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AM26C31CDR | AM26C31CDRG4 | Why it matters |
|---|---|---|---|
| Function | Quadruple differential line driver | Quadruple differential line driver | Both parts perform the same core function, so they are functionally interchangeable in the circuit. |
| Number of Drivers | 4 | 4 | The driver count must match to preserve the number of differential channels in the design. |
| Supply Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Compatible supply range ensures the part operates correctly in the same power rail design. |
| Output Type | Differential (3-state) | Differential (3-state) | Matching output type guarantees the same signaling behavior and bus compatibility. |
| Package / Case | SOIC-16 | SOIC-16 | Identical package and footprint allow drop-in replacement on the same PCB layout. |
| Mounting Type | Surface Mount | Surface Mount | Same mounting style ensures compatibility with the assembly process and board design. |
| Operating Temperature Range | -40 °C to 85 °C | -40 °C to 85 °C | Matching temperature ratings confirm the part meets the same environmental requirements. |
| Data Rate | Up to 10 Mbps | Up to 10 Mbps | Equal data rate capability ensures the same transmission performance in the application. |
| Packaging / Reel Suffix | Tape and Reel (R suffix) | Tape and Reel, Green/RoHS variant (RG4 suffix) | The suffix difference reflects ordering/packaging and environmental compliance variants, which matters for procurement and RoHS requirements but not electrical function. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26C31CDR | AM26C31CDRG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Type | Driver | Driver |
| Number of Drivers/Receivers | 4/0 | 4/0 |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between the AM26C31CDR and the AM26C31CDRG4?
The AM26C31CDR and AM26C31CDRG4 are functionally identical quad differential line drivers from Texas Instruments. The only difference is the packaging designation: the "G4" suffix indicates a green/RoHS-compliant lead finish (NiPdAu) and is otherwise the same device in the same SOIC-16 (D) package and tape-and-reel (R) format. Both share the same datasheet, electrical specifications, and pinout.
Are the AM26C31CDR and AM26C31CDRG4 electrically and functionally interchangeable?
Yes. Both devices are the same quad differential line driver with identical electrical characteristics, including supply voltage range (4.5 V to 5.5 V), output drive capability, propagation delays, and pinout in the SOIC-16 package. The G4 suffix only denotes the RoHS-compliant lead finish, so they are interchangeable in designs that accept RoHS-compliant parts.
What is the function of the AM26C31CDR/AM26C31CDRG4?
These are quad differential line drivers designed for digital data transmission over balanced lines. They convert single-ended TTL/CMOS logic inputs into differential outputs compliant with RS-422 and RS-485 signaling standards, and are commonly used in industrial control, motor control, and data acquisition systems.
What package and pin count do the AM26C31CDR and AM26C31CDRG4 use?
Both parts are supplied in the SOIC-16 (D) surface-mount package with 16 pins, in tape-and-reel (R) packaging for automated assembly. The pinout is identical between the two orderable part numbers.
What is the difference between the "R" and "G4" suffixes on these part numbers?
The "R" suffix indicates tape-and-reel packaging. The "G4" suffix indicates a green (RoHS-compliant) lead finish. Therefore AM26C31CDR is the standard tape-and-reel version, while AM26C31CDRG4 is the RoHS-compliant tape-and-reel version of the same device.
Can the AM26C31CDRG4 be used as a drop-in replacement for the AM26C31CDR?
Yes, provided the design accepts RoHS-compliant components. Both parts share the same die, package, pinout, and electrical specifications; the G4 designation only reflects the lead finish. No layout or electrical changes are required for substitution.
What supply voltage and signaling standard do these devices support?
Both the AM26C31CDR and AM26C31CDRG4 operate from a single 5 V supply (4.5 V to 5.5 V typical range) and provide differential outputs compliant with RS-422 and RS-485 standards for balanced digital transmission.