Part A
AM26LV31CDR
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 7383 PCS
- Package
- SOIC-16
- Series
- 인터페이스 - 드라이브, 수신기, 트랜시버
Replacement verdict
Not a drop-in replacement
The AM26LV31CDR and AM26LS32ACNSRG4 are not functionally interchangeable: the AM26LV31CDR is a quad low-voltage differential line driver, while the AM26LS32ACNSRG4 is a quad differential line receiver. Their signal direction, supply voltage range, and logic interface differ fundamentally, so substituting one for the other is not feasible without redesigning the surrounding circuit.
Different device function
Different signal direction
Different supply voltage range
Different logic interface
Parts at a glance
Part B
AM26LS32ACNSRG4
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 7377 PCS
- Package
- SOIC-16
- Series
- 인터페이스 - 드라이브, 수신기, 트랜시버
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AM26LV31CDR | AM26LS32ACNSRG4 | 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 senses data from it, which is fundamental to circuit placement. |
| 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 or a rail change. |
| Logic family / standard | Low-voltage (LV) differential, TIA/EIA-422-B compatible | 5 V differential, TIA/EIA-422-B and TIA/EIA-423-B compatible | Compatibility with the bus standard and logic levels affects interoperability with the rest of the system. |
| Number of drivers / receivers | 4 drivers | 4 receivers | Channel count and type must match the bus topology; a driver cannot replace a receiver channel-for-channel. |
| Output / input type | Three-state differential outputs | Differential inputs with three-state outputs | The electrical interface (driven outputs vs. sensed inputs) determines whether the device can be wired into a given node. |
| Package | SOIC-16 (D) | SOIC-16 (NS) | Package and pinout affect board footprint and whether a drop-in replacement is physically possible. |
| Operating temperature range | -40°C to +85°C | -40°C to +85°C | Matching temperature ratings confirm both parts suit the same environmental conditions. |
| Mounting type | Surface mount | Surface mount | Assembly method must match the PCB process; both being SMD keeps them compatible with the same reflow flow. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26LV31CDR | AM26LS32ACNSRG4 |
|---|---|---|
| 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 | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary functional differences between the AM26LV31CDR and the AM26LS32ACNSRG4?
The AM26LV31CDR is a quad low-voltage differential line driver designed for 3.3 V operation, while the AM26LS32ACNSRG4 is a quad differential line receiver designed for 5 V operation. The AM26LV31CDR drives balanced lines, whereas the AM26LS32ACNSRG4 receives differential signals and converts them to TTL-compatible outputs.
Are the AM26LV31CDR and AM26LS32ACNSRG4 pin-compatible or interchangeable?
No. The AM26LV31CDR is a driver in a 16-pin SOIC package, and the AM26LS32ACNSRG4 is a receiver in a 16-pin SOP package. They serve opposite signal-flow roles (driver vs. receiver) and are not direct substitutes for one another.
What supply voltage does each device require?
The AM26LV31CDR operates from a single 3.3 V supply (typically 3.0 V to 3.6 V). The AM26LS32ACNSRG4 operates from a single 5 V supply (typically 4.75 V to 5.25 V).
What are the output types of the AM26LV31CDR and AM26LS32ACNSRG4?
The AM26LV31CDR provides differential tri-state outputs suitable for driving balanced transmission lines. The AM26LS32ACNSRG4 provides differential inputs with TTL-compatible outputs, and its outputs are tri-state capable for bus connection.
Can the AM26LV31CDR and AM26LS32ACNSRG4 be used together in a differential link?
They are not a matched driver/receiver pair for the same signaling standard. The AM26LV31CDR is a 3.3 V low-voltage differential driver, while the AM26LS32ACNSRG4 is a 5 V RS-422/RS-423-type receiver. A compatible receiver for the AM26LV31CDR should be selected from the same low-voltage differential family, and a compatible driver for the AM26LS32ACNSRG4 should be selected from the corresponding 5 V family.
What are the operating temperature ranges for these devices?
Both the AM26LV31CDR and the AM26LS32ACNSRG4 are specified for the commercial temperature range of 0°C to 70°C.
Do these devices support tri-state output control?
Yes. The AM26LV31CDR features an output enable function that places the differential outputs in a high-impedance state. The AM26LS32ACNSRG4 also provides a tri-state control that places its outputs in a high-impedance state when disabled.
What package types are used for the AM26LV31CDR and AM26LS32ACNSRG4?
The AM26LV31CDR is supplied in a 16-pin SOIC (D) package. The AM26LS32ACNSRG4 is supplied in a 16-pin SOP (NS) package. Both are surface-mount packages, but their land patterns and mechanical dimensions differ.