Part A
AM26LS32AID
Texas Instruments
- Lifecycle
- Active
- Stock
- 1948 Stückzahl
- Package
- SOIC-16
- Series
- Interface-Treiber, Empfänger, Transceiver
Replacement verdict
Not a drop-in replacement
The AM26LS32AID and AM26LV31CDRG4 are not functionally interchangeable: the AM26LS32AID is a quad differential line receiver, while the AM26LV31CDRG4 is a quad differential line driver. Their signal direction, supply voltage range, and output characteristics differ fundamentally, so the AM26LV31CDRG4 cannot directly replace the AM26LS32AID in existing designs without circuit redesign.
Different device function
Different signal direction
Different supply voltage range
Different output type
Parts at a glance
Part B
AM26LV31CDRG4
Texas Instruments
- Lifecycle
- Active
- Stock
- 8618 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 | AM26LS32AID | AM26LV31CDRG4 | Why it matters |
|---|---|---|---|
| Function | Quadruple differential line receiver | Quadruple low-voltage differential line driver | Receiver vs. driver roles are not interchangeable; a receiver cannot transmit and a driver cannot receive, so they serve opposite ends of a differential link. |
| 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, affecting direct board-level substitution. |
| Logic Family / Signaling Standard | RS-422 / RS-423 / TIA/EIA-422 receiver | Low-voltage RS-422 / TIA/EIA-422 driver | The signaling standard and family determine compatibility with the opposite-end transceiver and the cabling environment. |
| Number of Drivers / Receivers | 0 drivers / 4 receivers | 4 drivers / 0 receivers | Channel direction and count must match the system architecture; swapping a receiver for a driver breaks the data path. |
| Output Type | Tri-state differential receiver outputs (3-state) | Tri-state differential driver outputs (3-state) | Tri-state capability enables bus sharing, but the electrical nature of the output (receiver vs. driver) differs fundamentally. |
| Package / Mounting | 16-pin SOIC (surface mount) | 16-pin SOIC (surface mount) | Matching footprint and pin count allow physical board compatibility, though electrical differences still prevent direct substitution. |
| Operating Temperature Range | -40°C to +85°C (industrial) | -40°C to +85°C (industrial) | Equivalent temperature ratings mean both suit the same environmental conditions, so thermal limits are not a differentiator. |
| Data Rate Capability | Up to approximately 10 Mbps (RS-422) | Up to approximately 32 Mbps (low-voltage RS-422) | Higher supported data rates affect achievable link speed and signal integrity margins in high-speed designs. |
| Input/Output Compatibility | TTL-compatible outputs; differential inputs | TTL/CMOS-compatible inputs; differential outputs | Logic-level compatibility determines whether the device interfaces directly with the host controller without additional buffering. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26LS32AID | AM26LV31CDRG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Type | Receiver | Driver |
| Protocol | RS422, RS423 | RS422, RS485 |
| Number of Drivers/Receivers | 0/4 | 4/0 |
| Voltage - Supply | 4.75V ~ 5.25V | 3V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C | 0°C ~ 70°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 AM26LV31CDRG4?
The AM26LS32AID is a quad differential line receiver designed for RS-422, RS-423, and RS-485 applications, while the AM26LV31CDRG4 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 AM26LV31CDRG4 have compatible supply voltage requirements?
No. The AM26LS32AID operates from a single 5 V supply (typically 4.75 V to 5.25 V), whereas the AM26LV31CDRG4 is a low-voltage device operating from a 3.0 V to 3.6 V supply. The supply rails are not interchangeable, and each device must be powered within its own specified range.
Can the AM26LS32AID and AM26LV31CDRG4 be used together in the same differential link?
Yes, they can be used together in a differential link because the AM26LV31CDRG4 driver and AM26LS32AID receiver are both compatible with RS-422 signaling. However, the designer must verify that the driver output levels, receiver input thresholds, and common-mode ranges overlap correctly, and that the 3.0 V to 3.6 V driver supply and 5 V receiver supply are both provided as required.
What package types are available for the AM26LS32AID and AM26LV31CDRG4?
The AM26LS32AID is offered in a 16-pin SOIC package (the "D" suffix in the orderable part number). The AM26LV31CDRG4 is offered in a 16-pin SOIC package as well, with the "DR" indicating tape-and-reel packaging and the "G4" indicating Green/RoHS-compliant construction. Both are 16-pin SOIC devices, but pin functions differ because one is a receiver and the other is a driver.
Are the AM26LS32AID and AM26LV31CDRG4 drop-in replacements for each other?
No. They are not drop-in replacements because they perform opposite functions (receiver versus driver), operate from different supply voltages (5 V versus 3.0 V to 3.6 V), and have different pin functions despite sharing a 16-pin SOIC footprint. Substitution requires a full design review against the respective manufacturer datasheets.
What are the typical data rates supported by the AM26LV31CDRG4 driver?
The AM26LV31CDRG4 is specified for signaling rates up to 32 Mbps, making it suitable for high-speed RS-422 and RS-485 differential data transmission. Designers should confirm the exact data-rate specification and test conditions in the manufacturer datasheet for their operating environment.
Does the AM26LS32AID include fail-safe features for open or terminated inputs?
The AM26LS32AID is a quad differential line receiver with input sensitivity and common-mode range specified for RS-422/RS-423/RS-485 operation. Whether a specific open-input fail-safe behavior is guaranteed depends on the exact datasheet revision and test conditions, so designers should verify the fail-safe specification in the official manufacturer documentation before relying on it.
What are the operating temperature ranges for the AM26LS32AID and AM26LV31CDRG4?
The AM26LS32AID is specified for the industrial temperature range of -40°C to +85°C. The AM26LV31CDRG4 is also specified for the industrial temperature range of -40°C to +85°C. Both devices are therefore suitable for industrial-grade environments within their respective supply and signal specifications.