Part A
AM26C31CDR
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 5213 PCS
- Package
- SOIC-16
- Series
- Interface - Drivers, Receivers, Transceivers
Replacement verdict
Compatible functional replacement candidate
The AM26C31CDR and AM26C31IDE4 are functionally equivalent quad differential line drivers sharing the same AM26C31 core, logic function, and electrical characteristics; the primary distinction is package and ordering variant, so the AM26C31IDE4 serves as a viable functional substitute for the AM26C31CDR where the alternate package and qualification flow are acceptable.
Logic Function
High match
Electrical Characteristics
High match
Package Type
Validation required
Operating Temperature Range
Validation required
Parts at a glance
Part B
AM26C31IDE4
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 3690 PCS
- Package
- SOIC-16
- Series
- Interface - Drivers, Receivers, Transceivers
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 | AM26C31IDE4 | Why it matters |
|---|---|---|---|
| Function | Quadruple differential line driver | Quadruple differential line driver | Both devices perform the same core function, so they are functionally interchangeable in the signal-driving role. |
| Number of Drivers | 4 | 4 | The driver count must match the number of differential channels required by the system design. |
| Supply Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | The operating supply window determines compatibility with the board's regulated 5 V rail. |
| Output Type | Differential (3-state) | Differential (3-state) | Three-state differential outputs allow bus sharing and are essential for multipoint or shared-bus topologies. |
| Data Rate | Up to 10 Mbps | Up to 10 Mbps | The maximum signaling rate must meet the throughput requirements of the communication interface. |
| Operating Temperature Range | -40 °C to 85 °C | -40 °C to 85 °C | The temperature range must cover the application's ambient and operating conditions for reliable operation. |
| Package / Mounting | SOIC-16, surface mount (tape and reel) | SOIC-16, surface mount (tube) | The package footprint is identical, but the shipping form (reel vs tube) affects assembly line handling and inventory format. |
| Pin Count | 16 | 16 | Matching pin count and pinout ensures the devices are drop-in compatible on the same PCB footprint. |
| RoHS Compliance | RoHS compliant | RoHS compliant | RoHS compliance is required for regulatory and environmental conformity in most markets. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26C31CDR | AM26C31IDE4 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,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 | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the AM26C31CDR and AM26C31IDE4?
Both are quadruple differential line drivers from Texas Instruments that meet TIA/EIA-422-B and ITU Recommendation V.11 specifications. They are functionally identical 4-channel RS-422 drivers; the difference lies in package and ordering designation.
What is the difference between the AM26C31CDR and AM26C31IDE4?
The AM26C31CDR is supplied in a 16-pin SOIC package (D suffix) on tape and reel (R suffix). The AM26C31IDE4 is supplied in a 16-pin SOIC package (D suffix) in tube form (E4 suffix indicates Pb-free/RoHS-compliant construction). Both use the same die and electrical specifications; the differences are packaging, reel/tube format, and the E4 Pb-free designation.
Are the AM26C31CDR and AM26C31IDE4 electrically interchangeable?
Yes. Both devices share the same datasheet electrical characteristics, including supply voltage range of 4.5 V to 5.5 V, differential output voltage, and propagation delays. They are functionally and electrically interchangeable; only the packaging and Pb-free designation differ.
What is the operating temperature range for these devices?
Both the AM26C31CDR and AM26C31IDE4 are specified for the commercial temperature range of 0°C to 70°C, consistent with the C-grade suffix in the part number.
What supply voltage do the AM26C31CDR and AM26C31IDE4 require?
Both devices operate from a single 5 V supply, with a specified range of 4.5 V to 5.5 V, per the Texas Instruments datasheet.
Do these drivers support tri-state output control?
Yes. Both the AM26C31CDR and AM26C31IDE4 provide an active-high output enable function that places all four differential outputs in a high-impedance state when disabled, allowing use on shared buses.
Can the AM26C31CDR and AM26C31IDE4 be used interchangeably in an existing design?
Yes, provided the PCB accepts the 16-pin SOIC (D) package footprint. Since both parts share the same package type, pinout, and electrical specifications, they can be used interchangeably; the choice between them is driven by reel versus tube packaging and Pb-free (E4) requirements.