Part A
AM26LV32CDR
Texas Instruments
- Lifecycle
- Active
- Stock
- 3036 PCS
- Package
- SOIC-16
- Series
- Interface - Condutores, Receptores, Transceivers
Replacement verdict
Not a drop-in replacement
The AM26LV32CDR and AM26LS31CDG4 are not functionally interchangeable: the AM26LV32CDR is a low-voltage quad differential line receiver, while the AM26LS31CDG4 is a quad differential line driver. Their signal direction, electrical interface, and application roles differ fundamentally, so substituting one for the other is not feasible without redesigning the surrounding circuit.
Different signal direction
Different output type
Different supply voltage range
Different logic family
Parts at a glance
Part B
AM26LS31CDG4
Texas Instruments
- Lifecycle
- Active
- Stock
- 8504 PCS
- Package
- SOIC-16
- Series
- Interface - Condutores, Receptores, 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 | AM26LV32CDR | AM26LS31CDG4 | Why it matters |
|---|---|---|---|
| Function | Quadruple differential line receiver | Quadruple differential line driver | A receiver and a driver serve opposite roles in a differential link, so they are not directly interchangeable in the same socket. |
| Signal direction | Receives differential inputs, outputs single-ended | Accepts single-ended inputs, drives differential outputs | Direction determines whether the device can be used at the receiving or transmitting end of a bus. |
| Supply voltage (nominal) | 3.3 V | 5 V | Different supply rails affect logic-level compatibility and whether the part can share a power domain with surrounding circuitry. |
| Output type | 3-state single-ended outputs | 3-state differential outputs | Output topology must match the bus signaling scheme; a differential driver cannot directly replace a single-ended receiver output. |
| Input type | Differential inputs with wide common-mode range | Single-ended TTL-compatible inputs | Input structure dictates what signal source the device can accept and its noise immunity. |
| Number of channels | 4 receivers | 4 drivers | Channel count and type must match the number of lines being received or driven in the application. |
| Package | SOIC-16 (D) | SOIC-16 (D) | Package footprint affects board layout and whether the part can physically drop into an existing pad pattern. |
| Operating temperature range | -40°C to +85°C | 0°C to +70°C | Temperature range determines suitability for industrial versus commercial environments. |
| Standard compliance | TIA/EIA-422-B and TIA/EIA-485-A compatible receiver | TIA/EIA-422-B and TIA/EIA-423-B compatible driver | Compliance standards define the electrical characteristics and interoperability of the differential interface. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26LV32CDR | AM26LS31CDG4 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Type | Receiver | Driver |
| Protocol | RS422, RS485 | RS422, RS485 |
| Number of Drivers/Receivers | 0/4 | 4/0 |
| Voltage - Supply | 3V ~ 3.6V | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°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 AM26LV32CDR and the AM26LS31CDG4?
The AM26LV32CDR is a quad differential line receiver designed for low-voltage (3.3 V) operation, while the AM26LS31CDG4 is a quad differential line driver designed for 5 V operation. They serve complementary roles in balanced transmission systems: the AM26LV32CDR receives differential signals, and the AM26LS31CDG4 drives them.
Can the AM26LV32CDR and AM26LS31CDG4 be used together in the same system?
Yes. The AM26LS31CDG4 driver and AM26LV32CDR receiver are commonly paired in balanced (differential) data transmission links, provided the supply voltages and logic-level interfaces of each device are respected in the design. The driver operates from a 5 V supply, and the receiver operates from a 3.3 V supply, so level compatibility at the interface must be verified.
What are the supply voltage requirements for each device?
The AM26LV32CDR operates from a nominal 3.3 V supply, while the AM26LS31CDG4 operates from a nominal 5 V supply. Each device should be powered within the range specified in its respective manufacturer datasheet.
What package types are the AM26LV32CDR and AM26LS31CDG4 available in?
The AM26LV32CDR is supplied in an SOIC (small-outline integrated circuit) package, indicated by the "D" suffix in the orderable part number. The AM26LS31CDG4 is supplied in a 16-pin SOIC package, with the "G4" suffix denoting a lead-free (RoHS-compliant) finish per Texas Instruments ordering conventions.
Are the AM26LV32CDR and AM26LS31CDG4 drop-in replacements for each other?
No. The AM26LV32CDR is a receiver and the AM26LS31CDG4 is a driver, so they perform opposite functions and are not interchangeable. Substitution would only be possible between devices of the same function, package, pinout, and electrical specification, verified against the manufacturer datasheets.
What signaling standard do these devices support?
Both devices are intended for balanced differential data transmission. The AM26LS31CDG4 is a quad differential line driver, and the AM26LV32CDR is a quad differential line receiver; together they support differential signaling over twisted-pair or similar balanced media. Designers should confirm the specific electrical compliance (for example, RS-422/RS-485-type characteristics) against the manufacturer datasheet for the target application.
How many differential channels does each device provide?
Both the AM26LV32CDR and the AM26LS31CDG4 are quad devices, providing four differential channels each. The AM26LV32CDR provides four differential receiver channels, and the AM26LS31CDG4 provides four differential driver channels.