Part A
AM26C31IDR
Texas Instruments
- Lifecycle
- Active
- Stock
- 2239 PCS
- Package
- SOIC-16
- Series
- Interface - Drivers, Receivers, Transceivers
Replacement verdict
Compatible functional replacement candidate
The AM26C31IDR and AM26C31IDE4 are functionally equivalent quad differential line drivers from the same manufacturer family, sharing identical electrical characteristics, logic function, and package footprint. The only distinction is the packaging finish (tape-and-reel versus tube/rail), making them interchangeable for design purposes with no impact on circuit performance.
Logic Function
High match
Package Type
High match
Electrical Characteristics
High match
Packaging Format
Validation required
Parts at a glance
Part B
AM26C31IDE4
Texas Instruments
- 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 | AM26C31IDR | AM26C31IDE4 | 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 same circuit role. |
| Number of Drivers | 4 | 4 | The driver count must match the number of differential lines the system needs to transmit. |
| 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 system power rail and logic levels. |
| Output Type | Differential (3-state) | Differential (3-state) | Three-state differential outputs allow bus sharing and match the signaling standard required by the interface. |
| Package / Case | 16-SOIC | 16-SOIC | Package footprint and pinout must match for the part to be a drop-in board replacement. |
| Mounting Type | Surface Mount | Surface Mount | Mounting style must match the assembly process and PCB land pattern. |
| Operating Temperature Range | -40 °C to 85 °C | -40 °C to 85 °C | The temperature range must cover the application environment for reliable operation. |
| Data Rate | Up to 10 Mbps | Up to 10 Mbps | The maximum signaling rate must meet or exceed the system's data throughput requirement. |
| RoHS Compliance | RoHS compliant | RoHS compliant | Environmental compliance affects regulatory acceptance and manufacturing restrictions. |
| Packaging / Ordering Suffix | Tape and reel (R suffix) | Tube/rail (E4 suffix) | The ordering suffix indicates packaging format, which affects automated assembly handling but not electrical function. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26C31IDR | 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 | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between the AM26C31IDR and the AM26C31IDE4?
Both devices are quad differential line drivers from Texas Instruments in the same SOIC-16 package and share identical electrical specifications. The difference is the ordering suffix: the AM26C31IDR is supplied in large tape-and-reel quantities for automated assembly, while the AM26C31IDE4 is supplied in tube (rail) packaging. The "E4" suffix denotes the tube packaging option; the silicon and functional performance are the same.
Are the AM26C31IDR and AM26C31IDE4 electrically and functionally identical?
Yes. Both are the same AM26C31 quad differential line driver die in a 16-pin SOIC (D) package, with the same supply voltage range, output drive characteristics, and pinout. The only documented distinction is the packaging format (tape-and-reel vs. tube), so they are interchangeable in circuit design.
What is the recommended supply voltage and operating temperature range for these devices?
The AM26C31 family operates from a single 5 V supply (nominal), with a specified supply voltage range of 4.5 V to 5.5 V. The "I" grade devices are specified over the industrial temperature range of -40 °C to +85 °C.
What package and pin count do the AM26C31IDR and AM26C31IDE4 use?
Both parts are offered in the 16-pin SOIC (D) package, with a 3.9 mm body width and 1.27 mm lead pitch. The pinout provides four differential driver outputs with enable controls, and the package footprint is identical between the two orderable part numbers.
Can the AM26C31IDR and AM26C31IDE4 be used interchangeably in an existing design?
Yes, from an electrical and footprint standpoint they are interchangeable because they share the same die, package, and pinout. The choice between them is a manufacturing/logistics decision: use the IDR tape-and-reel version for high-volume automated pick-and-place lines and the IDE4 tube version for prototyping, low-volume, or hand-assembly workflows.
What is the function of the AM26C31 devices in a system?
The AM26C31 is a quad differential line driver designed for balanced transmission of digital data over twisted-pair or parallel-wire cables. It converts single-ended TTL/CMOS logic inputs into differential outputs compliant with RS-422/RS-485-style signaling, and is commonly used for industrial control, data transmission, and clock/data distribution.
Do the AM26C31IDR and AM26C31IDE4 differ in compliance, certification, or RoHS status?
No. Both orderable part numbers correspond to the same base device and carry the same environmental and quality attributes, including RoHS compliance and the same moisture sensitivity level for the SOIC-16 package. Packaging format does not change the device's qualification status.