Part A
AM26LV31IDR
Texas Instruments
- Lifecycle
- Active
- Stock
- 3059 Stückzahl
- Package
- SOIC-16
- Series
- Interface-Treiber, Empfänger, Transceiver
Replacement verdict
Not a drop-in replacement
The AM26LV31IDR and AM26LS32AIDE4 are not functionally interchangeable: the AM26LV31IDR is a quad low-voltage differential line driver, while the AM26LS32AIDE4 is a quad differential line receiver. Their signal direction, output/input architecture, and application roles differ fundamentally, so substituting one for the other is not feasible without redesigning the interface.
Different device function
Driver versus receiver
Different signal direction
Different interface role
Parts at a glance
Part B
AM26LS32AIDE4
Texas Instruments
- Lifecycle
- Active
- Stock
- 8173 Stückzahl
- Package
- SOIC-16
- Series
- Interface-Treiber, Empfänger, Transceiver
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AM26LV31IDR | AM26LS32AIDE4 | Why it matters |
|---|---|---|---|
| Function | Quadruple differential line driver | Quadruple differential line receiver | A driver and a receiver serve opposite roles in a differential link, so they are not direct substitutes for the same socket. |
| Signal direction | Transmit (driver outputs) | Receive (receiver inputs) | Direction determines whether the device sources data onto the bus or reads data from it. |
| Output type | 3-state differential outputs | 3-state TTL-compatible outputs | Output structure affects bus sharing, loading, and how the device interfaces to the next stage. |
| Input type | TTL-compatible single-ended inputs | Differential inputs with wide common-mode range | Input topology defines the signal format the device expects and its noise immunity. |
| Supply voltage (VCC) | 3.0 V to 3.6 V | 4.75 V to 5.25 V | Different supply rails mean the parts cannot share the same power domain without level shifting. |
| Package | 16-pin SOIC (D) | 16-pin SOIC (D) | Package compatibility affects PCB footprint and assembly, though identical packages still require matching pin functions. |
| Operating temperature range | -40°C to +85°C | -40°C to +85°C | Temperature range confirms suitability for industrial environments; matching ranges ease substitution planning. |
| Number of drivers/receivers | 4 drivers | 4 receivers | Channel count and role must match the bus architecture for a design to function correctly. |
| Standard compliance | TIA/EIA-422-B and ITU-T V.11 compatible | TIA/EIA-422-B, TIA/EIA-423-B, and ITU-T V.10/V.11 compatible | Standards compliance determines interoperability with other differential bus devices and cabling. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26LV31IDR | AM26LS32AIDE4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Type | Driver | Receiver |
| Protocol | RS422, RS485 | RS422, RS423 |
| Number of Drivers/Receivers | 4/0 | 0/4 |
| Receiver Hysteresis | - | 50 mV |
| Voltage - Supply | 3V ~ 3.6V | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary functional differences between the AM26LV31IDR and the AM26LS32AIDE4?
The AM26LV31IDR is a quad low-voltage differential line driver designed to meet TIA/EIA-422-B and ITU Recommendation V.11, while the AM26LS32AIDE4 is a quad differential line receiver designed to meet TIA/EIA-422-B and TIA/EIA-423-B. One is a driver and the other is a receiver, so they serve complementary but opposite roles in a differential transmission link.
Can the AM26LV31IDR and AM26LS32AIDE4 be used together in the same system?
Yes. Because the AM26LV31IDR is a differential driver and the AM26LS32AIDE4 is a differential receiver, they can be paired across a balanced transmission line to form a complete driver/receiver link, provided the signaling levels, supply voltages, and termination are validated against both datasheets.
What supply voltage does each device require?
The AM26LV31IDR operates from a single 3.3 V supply, consistent with its low-voltage LV designation. The AM26LS32AIDE4 operates from a single 5 V supply. The differing supply rails must be considered when interfacing the two devices in a shared system.
What package and pin count do these two parts use?
Both the AM26LV31IDR and the AM26LS32AIDE4 are offered in a 16-pin SOIC package. The IDR and IDE4 suffixes denote tape-and-reel packaging options from Texas Instruments, so the package footprint is the same 16-pin SOIC for both devices.
Are the AM26LV31IDR and AM26LS32AIDE4 drop-in replacements for each other?
No. Although both are 16-pin SOIC devices, one is a line driver and the other is a line receiver, and they operate from different supply voltages (3.3 V versus 5 V). They are not functionally or electrically interchangeable and cannot be substituted directly without redesigning the circuit function.
What are the typical applications for each device?
The AM26LV31IDR is typically used to drive balanced differential signals over twisted-pair or parallel cables in low-voltage digital transmission systems. The AM26LS32AIDE4 is typically used to receive balanced differential signals in data transmission, industrial control, and interface applications requiring TIA/EIA-422-B or TIA/EIA-423-B compliance.
Do both devices meet the same industry interface standards?
They meet related but not identical standards. The AM26LV31IDR is designed to meet TIA/EIA-422-B and ITU Recommendation V.11 for balanced differential drivers. The AM26LS32AIDE4 is designed to meet TIA/EIA-422-B and TIA/EIA-423-B for differential receivers. Designers should confirm the specific standard required by the target interface against the respective datasheet.