Part A
AM26LS32ACDR
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 2449 個数
- Package
- SOIC-16
- Series
- インターフェース - ドライバ、レシーバ、トランシーバ
Replacement verdict
Compatible functional replacement candidate
The AM26LV32EIDR and AM26LS32ACDR are both quad differential line receivers in a 16-pin SOIC package with matching pinout and function, making them a viable functional replacement candidate. However, the AM26LV32EIDR is a low-voltage 3.3 V device with a wider operating temperature range and integrated failsafe features, while the AM26LS32ACDR operates at 5 V. Designers must validate supply voltage compatibility, input common-mode range, and failsafe behavior in the target application before substituting.
Function and Channel Count
High match
Package and Pinout
High match
Supply Voltage
Validation required
Input Common-Mode Range
Validation required
Parts at a glance
Part B
AM26LV32EIDR
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 2110 個数
- Package
- SOIC-16
- Series
- インターフェース - ドライバ、レシーバ、トランシーバ
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 | AM26LS32ACDR | Why it matters |
|---|---|---|---|
| Supply Voltage (Vcc) | 3.0 V to 3.6 V | 4.75 V to 5.25 V | The two devices operate on different supply rails (3.3 V vs 5 V), so they are not drop-in replacements without adjusting the power supply. |
| Logic Family / Signaling Standard | Low-voltage RS-422 (TIA/EIA-422-B, V.11) | RS-422 / RS-423 (TIA/EIA-422-B, TIA/EIA-423-B, V.10, V.11) | The AM26LS32AC supports both RS-422 and RS-423 signaling, while the AM26LV32E is limited to RS-422, affecting compatibility with legacy interfaces. |
| Input Common-Mode Voltage Range | -0.3 V to 5.5 V (with Vcc = 3.3 V) | -7 V to +7 V | The wider common-mode range of the AM26LS32AC provides greater noise immunity and tolerance to ground potential differences in harsh environments. |
| Receiver Input Sensitivity | ±200 mV | ±200 mV | Both devices share the same ±200 mV sensitivity, ensuring comparable detection of small differential signals. |
| Propagation Delay | Typical 12 ns | Typical 17 ns | Faster propagation delay in the AM26LV32E allows higher data rates and tighter timing margins in high-speed communication links. |
| Output Type | 3-state (tri-state) outputs | 3-state (tri-state) outputs | Both provide tri-state outputs, enabling bus sharing and multiplexing in multi-receiver systems. |
| Operating Temperature Range | -40 °C to +85 °C | 0 °C to +70 °C | The industrial temperature range of the AM26LV32E makes it suitable for harsh environments where the commercial-grade AM26LS32AC may not be rated. |
| Package | SOIC-16 (D) | SOIC-16 (D) | Identical SOIC-16 packages allow the same PCB footprint, simplifying board-level substitution. |
| Number of Receivers | 4 | 4 | Both are quad receivers, so channel count is equivalent for multi-line bus applications. |
| ESD Protection (HBM) | ±15 kV (bus pins) | ±2 kV (typical) | Higher ESD protection on the AM26LV32E improves robustness against electrostatic discharge during handling and field operation. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26LS32ACDR | AM26LV32EIDR |
|---|---|---|
| Part Status | Active | Active |
| Type | Receiver | Receiver |
| Protocol | RS422, RS423 | RS422, RS485 |
| Number of Drivers/Receivers | 0/4 | 0/4 |
| Receiver Hysteresis | 50 mV | 35 mV |
| Voltage - Supply | 4.75V ~ 5.25V | 3V ~ 3.6V |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary functional differences between the AM26LV32EIDR and the AM26LS32ACDR?
The AM26LV32EIDR is a low-voltage quad differential line receiver designed for 3.3 V operation, while the AM26LS32ACDR is a quad differential line receiver designed for 5 V operation. The AM26LV32EIDR features a wider common-mode input voltage range and is optimized for low-power, low-voltage systems, whereas the AM26LS32ACDR is a legacy 5 V device with standard TTL-compatible outputs.
Are the AM26LV32EIDR and AM26LS32ACDR pin-to-pin compatible?
Yes, both devices are offered in the same 16-pin SOIC (D) package and share the same pinout for the quad receiver functions, including inputs, outputs, and enable pins. However, designers must verify that the supply voltage and output logic levels of the AM26LV32EIDR (3.3 V) are compatible with the surrounding circuitry when replacing the AM26LS32ACDR (5 V).
Can the AM26LV32EIDR be used as a direct drop-in replacement for the AM26LS32ACDR in an existing 5 V design?
No, the AM26LV32EIDR is specified for a 3.3 V supply and is not rated for 5 V operation. Direct substitution in a 5 V system would exceed the device's absolute maximum supply voltage rating and could cause damage or unreliable operation. The AM26LS32ACDR should be used in 5 V designs unless the system is redesigned for 3.3 V logic.
What are the supply voltage ranges for the AM26LV32EIDR and AM26LS32ACDR?
The AM26LV32EIDR operates from a single 3.3 V supply (typically 3.0 V to 3.6 V), while the AM26LS32ACDR operates from a single 5 V supply (typically 4.75 V to 5.25 V). These differing supply requirements are the key reason the two devices are not interchangeable without supply rail changes.
Do both devices support the same differential input common-mode voltage range?
No. The AM26LV32EIDR features an extended common-mode input voltage range of -0.3 V to 5.5 V (with VCC = 3.3 V), which allows operation in systems with ground potential differences. The AM26LS32ACDR has a common-mode range of -7 V to +7 V, which is wider in the negative direction but referenced to a 5 V supply. The appropriate device must be selected based on the common-mode conditions of the application.
How do the output logic levels of the AM26LV32EIDR and AM26LS32ACDR compare?
The AM26LV32EIDR provides 3.3 V-compatible outputs, while the AM26LS32ACDR provides 5 V TTL-compatible outputs. When interfacing to downstream logic, the output high level of the AM26LV32EIDR may not meet the VIH requirement of 5 V TTL inputs, so level translation may be required if mixing the two logic families.
Are both devices qualified for the same operating temperature range?
Both the AM26LV32EIDR and AM26LS32ACDR are specified for the industrial temperature range of -40°C to +85°C. This makes both devices suitable for industrial applications, provided the respective supply voltage and signal-level requirements are met.
Which device is better suited for low-power or battery-operated designs?
The AM26LV32EIDR is generally better suited for low-power and battery-operated designs because it operates at 3.3 V and is optimized for lower supply current compared to the 5 V AM26LS32ACDR. Designers should consult the respective datasheets for exact quiescent and dynamic current specifications under their operating conditions.