Part A
AM26LV32EIDR
Техасские инструменты
- Lifecycle
- Active
- Stock
- 2110 ПКС
- Package
- SOIC-16
- Series
- Интерфейс - драйверы, приемники, передатчики
Replacement verdict
Not a drop-in replacement
The AM26LV32EIDR and AM26LS31CDE4 are not functionally interchangeable: the AM26LV32EIDR is a low-voltage quad differential line receiver, while the AM26LS31CDE4 is a quad differential line driver. Their signal direction, supply voltage range, output structure, and package footprint differ, so substituting one for the other requires a full circuit redesign rather than a direct swap.
Different signal direction
Different supply voltage range
Different output structure
Different package footprint
Parts at a glance
Part B
AM26LS31CDE4
Техасские инструменты
- Lifecycle
- Active
- Stock
- 8888 ПКС
- Package
- SOIC-16
- Series
- Интерфейс - драйверы, приемники, передатчики
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AM26LV32EIDR | AM26LS31CDE4 | Why it matters |
|---|---|---|---|
| Function | Quadruple differential line receiver | Quadruple differential line driver | Receiver vs. driver roles are not interchangeable; a receiver cannot replace a driver in a transmission link. |
| Interface Standard | RS-422 / RS-485 (receiver) | RS-422 / RS-423 (driver) | The supported signaling standard determines compatibility with the rest of the bus and connected nodes. |
| 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. |
| Number of Drivers / Receivers | 0 drivers / 4 receivers | 4 drivers / 0 receivers | The driver/receiver count defines the direction of data flow and the part's role in the system. |
| Output Type | 3-state differential receiver outputs | 3-state differential driver outputs | Output stage topology affects bus loading, enable control, and whether the device can drive a terminated line. |
| Operating Temperature Range | -40 °C to +85 °C | 0 °C to +70 °C | The industrial-grade range of the receiver supports harsher environments than the commercial-grade driver. |
| Package / Mounting | 16-SOIC, surface mount | 16-SOIC, surface mount | Matching footprints allow board-level interchangeability, though electrical differences still prevent direct substitution. |
| Data Rate Capability | Up to 32 Mbps (typical) | Up to 10 Mbps (typical) | Maximum signaling rate constrains the achievable bus bandwidth in the target application. |
| Input/Output Logic Compatibility | TTL-compatible receiver inputs, 3.3 V logic outputs | TTL-compatible driver inputs, differential outputs | Logic-level compatibility determines whether the device can interface directly with the host controller. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26LV32EIDR | AM26LS31CDE4 |
|---|---|---|
| Supplier | - | 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 | -40°C ~ 85°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
| Receiver Hysteresis | 35 mV | - |
Frequently asked questions
What are the primary functional differences between the AM26LV32EIDR and the AM26LS31CDE4?
The AM26LV32EIDR is a low-voltage quad differential line receiver designed for 3.3 V operation, while the AM26LS31CDE4 is a quad differential line driver designed for 5 V operation. They serve complementary roles in a differential transmission system rather than being interchangeable.
Are the AM26LV32EIDR and AM26LS31CDE4 pin-compatible?
Both devices are offered in 16-pin SOIC packages, but their pin functions differ because one is a receiver and the other is a driver. The AM26LV32EIDR is a receiver with enable controls, while the AM26LS31CDE4 is a driver with a common enable. They are not direct pin-for-pin substitutes.
What supply voltage does each device require?
The AM26LV32EIDR operates from a 3.3 V nominal supply, while the AM26LS31CDE4 operates from a 5 V nominal supply. The supply rails are not interchangeable between the two devices.
Can the AM26LV32EIDR and AM26LS31CDE4 be used together in the same system?
Yes. The AM26LS31CDE4 driver and AM26LV32EIDR receiver can form a differential transmission link, provided the interface levels and termination are validated against both datasheets. The receiver's input common-mode range and the driver's output swing must be checked for compatibility.
What are the signaling standards supported by each device?
The AM26LS31CDE4 is a quad differential line driver intended for balanced digital data transmission, and the AM26LV32EIDR is a quad differential line receiver. Both are commonly associated with RS-422/RS-485-style balanced signaling, but exact compliance should be confirmed from the respective manufacturer datasheets.
How do the package and temperature grades compare?
The AM26LV32EIDR is supplied in a 16-pin SOIC package with an industrial temperature range, and the AM26LS31CDE4 is supplied in a 16-pin SOIC package. Exact temperature grade and package suffix details should be verified from the manufacturer datasheets for each orderable part number.
Which device should be selected for a 3.3 V differential receive path?
The AM26LV32EIDR is the appropriate choice for a 3.3 V differential receive path, since it is specified for 3.3 V operation. The AM26LS31CDE4 is a 5 V driver and is not a receiver, so it cannot fulfill that role.