Part A
AM26LV31IDR
德州儀器
- Lifecycle
- Active
- Stock
- 3059 件
- Package
- SOIC-16
- Series
- 介面-驅動器、接收器、收發器
Replacement verdict
Not a drop-in replacement
The AM26LS32AID and AM26LV31IDR are not functionally interchangeable: the AM26LS32AID is a quad differential line receiver, while the AM26LV31IDR is a quad differential line driver. Their signal direction, supply voltage range, and output characteristics differ fundamentally, so the AM26LV31IDR cannot directly replace the AM26LS32AID in an existing design without circuit redesign.
Different signal direction
Different output type
Different supply voltage range
Different input/output interface
Parts at a glance
Part B
AM26LS32AID
德州儀器
- Lifecycle
- Active
- Stock
- 1948 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 | AM26LS32AID | AM26LV31IDR | Why it matters |
|---|---|---|---|
| Function | Quadruple differential line receiver | Quadruple differential line driver | Receiver vs. driver roles are not interchangeable; one receives differential signals while the other transmits them. |
| Supply Voltage (VCC) | 5 V nominal (4.75 V to 5.25 V) | 3.3 V nominal (3.0 V to 3.6 V) | Different supply rails mean the parts cannot share the same power domain without level shifting. |
| Signal Standard | RS-422 / RS-485 (TIA/EIA-422-B, V.11, X.27) | RS-422 (TIA/EIA-422-B, V.11) | The receiver supports RS-485 multi-point buses, while the driver is specified for RS-422 point-to-point links. |
| Number of Drivers / Receivers | 0 drivers / 4 receivers | 4 drivers / 0 receivers | The channel direction is opposite, so they serve complementary ends of a differential link rather than substituting for each other. |
| Output Type | 3-state differential outputs | 3-state differential outputs | Both offer high-impedance disable, but the receiver outputs logic levels while the driver outputs differential line levels. |
| Input Type | Differential line inputs with wide common-mode range | TTL/CMOS single-ended logic inputs | The receiver accepts differential bus signals, whereas the driver accepts single-ended logic signals, defining their place in a system. |
| Package | 16-pin SOIC (D) | 16-pin SOIC (D) | Matching footprints allow board-level interchangeability of the package, though electrical function still differs. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Identical industrial temperature ratings mean both suit the same environmental conditions. |
| Data Rate Capability | Up to 10 Mbps (typical RS-422/485 receiver) | Up to 32 Mbps (typical RS-422 driver) | The driver supports higher signaling rates, which affects the maximum achievable link speed when paired. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26LV31IDR | AM26LS32AID |
|---|---|---|
| Part Status | Active | Active |
| Type | Driver | Receiver |
| Protocol | RS422, RS485 | RS422, RS423 |
| Number of Drivers/Receivers | 4/0 | 0/4 |
| 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 |
| Receiver Hysteresis | - | 50 mV |
Frequently asked questions
What are the primary functional differences between the AM26LS32AID and the AM26LV31IDR?
The AM26LS32AID is a quad differential line receiver designed for RS-422, RS-423, and RS-485 applications, while the AM26LV31IDR is a quad differential line driver designed for RS-422 and RS-485 applications. One is a receiver and the other is a driver, so they serve complementary but opposite roles in a differential signaling system.
Do the AM26LS32AID and AM26LV31IDR operate on the same supply voltage?
No. The AM26LS32AID operates from a single 5 V supply, whereas the AM26LV31IDR is a low-voltage device that operates from a 3.3 V supply. The supply voltage difference must be considered when designing a system that uses both devices.
Are the AM26LS32AID and AM26LV31IDR pin-compatible or package-compatible?
Both devices are offered in a 16-pin SOIC package (D suffix), so the package footprint and pin count are the same. However, because one is a receiver and the other is a driver, the pin functions are not interchangeable, and the devices cannot be substituted for one another on the same PCB position.
What signaling standards does the AM26LS32AID support?
The AM26LS32AID is designed to meet the requirements of RS-422, RS-423, and RS-485 differential data transmission standards, and it is commonly used as a quad differential line receiver in balanced and unbalanced digital data transmission systems.
What signaling standards does the AM26LV31IDR support?
The AM26LV31IDR is a quad differential line driver designed to meet the requirements of RS-422 and RS-485 standards. It is intended for low-voltage (3.3 V) balanced differential data transmission applications.
Can the AM26LS32AID and AM26LV31IDR be used together in the same system?
Yes, they can be used together in a system where the AM26LV31IDR acts as the differential driver and the AM26LS32AID acts as the differential receiver, provided the interface voltage levels and the 3.3 V versus 5 V supply domains are properly handled with level shifting or compatible signaling as required by the design.
What are the operating temperature ranges for these two devices?
Both the AM26LS32AID and the AM26LV31IDR are specified for the industrial temperature range of -40°C to +85°C, making them suitable for industrial and commercial applications requiring extended temperature operation.