Part A
AM26C31ID
Texas Instruments
- Lifecycle
- Active
- Stock
- 7351 PCS
- Package
- SOIC-16
- Series
- Interfaces - pilotes, récepteurs, émetteurs - récepteurs
Replacement verdict
Compatible functional replacement candidate
The AM26C31IDG4 is a functionally equivalent variant of the AM26C31ID, differing only in packaging designation (G4 denotes green/RoHS-compliant lead finish). Both are quad differential line drivers with identical electrical characteristics, pinout, and package type, making the AM26C31IDG4 a direct drop-in replacement for the AM26C31ID in existing designs.
Function and Logic Family
High match
Package Type and Pinout
High match
Electrical Specifications
High match
Operating Temperature Range
High match
Parts at a glance
Part B
AM26C31IDG4
Texas Instruments
- Lifecycle
- Active
- Stock
- 9629 PCS
- Package
- SOIC-16
- Series
- Interfaces - pilotes, récepteurs, émetteurs - récepteurs
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AM26C31ID | AM26C31IDG4 | 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 available 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 within the existing power rail of the system. |
| Output Type | Differential (3-state) | Differential (3-state) | Three-state differential outputs allow bus sharing and match the signaling requirements of RS-422/RS-485 style interfaces. |
| Data Rate | Up to 10 Mbps | Up to 10 Mbps | The maximum data rate must meet the application's signaling speed for reliable communication. |
| Operating Temperature Range | -40 °C to 85 °C | -40 °C to 85 °C | The temperature range must cover the application environment to ensure reliable operation. |
| Package / Case | 16-SOIC | 16-SOIC | Identical package and footprint allow direct board-level drop-in replacement without layout changes. |
| Packaging / Ordering Suffix | Tube / standard (no Pb-free G4 suffix) | G4 suffix (Pb-free/RoHS-compliant green packaging) | The G4 suffix denotes Pb-free/RoHS-compliant construction; this affects compliance and environmental requirements but not electrical function. |
| Mounting Type | Surface mount | Surface mount | Matching mounting type ensures the part fits the same assembly process and board footprint. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26C31ID | AM26C31IDG4 |
|---|---|---|
| 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 | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between the AM26C31ID and the AM26C31IDG4?
The AM26C31ID and AM26C31IDG4 are functionally identical quad differential line drivers. The primary difference is the ordering suffix: the "G4" designation indicates a lead-free (RoHS-compliant) green molding compound package option per Texas Instruments' environmental classification, while the base AM26C31ID ordering code reflects the standard package finish. Both share the same electrical specifications, pinout, and SOIC-16 (D) package.
Are the AM26C31ID and AM26C31IDG4 electrically interchangeable?
Yes. Both devices are quad differential line drivers meeting the TIA/EIA-422-B and ITU-T V.11 standards, with identical supply voltage range (4.5 V to 5.5 V), output drive characteristics, propagation delays, and pin assignments. They can be used interchangeably in the same circuit design without electrical redesign.
What package do the AM26C31ID and AM26C31IDG4 use?
Both parts are offered in a 16-pin SOIC package (TI package designator "D"). The package footprint, pin count, and pin functions are identical, so PCB land patterns are compatible between the two ordering codes.
Do the AM26C31ID and AM26C31IDG4 differ in RoHS or environmental compliance?
The "G4" suffix on the AM26C31IDG4 denotes a lead-free (Pb-free) finish and green molding compound per Texas Instruments' environmental documentation. The AM26C31ID ordering code may correspond to a standard finish depending on the manufacturing date code. Designers requiring documented Pb-free/RoHS compliance should verify the specific ordering code against the current TI datasheet and product page.
What are the key operating parameters shared by both devices?
Both are quad differential line drivers specified for a single 5 V supply (4.5 V to 5.5 V), with typical output skew and propagation delay suitable for balanced transmission line applications. They feature three-state outputs, high output impedance in power-off condition, and are designed for party-line or multidrop bus configurations per TIA/EIA-422-B. Refer to the TI datasheet for exact min/max limits.
Can the AM26C31IDG4 be used as a drop-in replacement for the AM26C31ID?
Yes, in terms of form, fit, and function. Because both share the same die, package, pinout, and electrical specifications, the AM26C31IDG4 is a drop-in replacement for the AM26C31ID. The only consideration is documentation of the Pb-free/green finish for compliance records.
Which applications are both the AM26C31ID and AM26C31IDG4 suited for?
Both devices are intended for balanced differential data transmission over twisted-pair or parallel-wire cables, including RS-422/RS-485-style interfaces, industrial control buses, and multidrop data links. They are commonly used to drive balanced lines in noisy industrial environments where differential signaling improves noise immunity.