Part A
AM26LV32CDR
Texas Instruments
- Lifecycle
- Active
- Stock
- 3036 PCS
- Package
- SOIC-16
- Series
- Interface - Condutores, Receptores, Transceivers
Replacement verdict
Compatible functional replacement candidate
The AM26LV32CDR and AM26LS32AIDE4 are both quad differential line receivers with tri-state outputs in a 16-pin SOIC package, making them functionally interchangeable for most 3.3 V and 5 V RS-422/RS-485 receive applications. The AM26LV32CDR is optimized for 3.3 V low-voltage operation, while the AM26LS32AIDE4 is specified for 5 V systems; designers should confirm the supply rail and input common-mode range against the target design before substituting.
Function and Channel Count
High match
Package and Pinout
High match
Supply Voltage Range
Validation required
Input Common-Mode Range
Validation required
Parts at a glance
Part B
AM26LS32AIDE4
Texas Instruments
- Lifecycle
- Active
- Stock
- 8173 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 | AM26LS32AIDE4 | 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 system power supply. |
| Logic Family | LV (low-voltage) differential line receiver | LS (standard 5 V) differential line receiver | Logic family determines compatible signaling levels and interfacing with surrounding logic; mixing families can cause level-mismatch issues. |
| Input Common-Mode Voltage Range | -0.3 V to 5.5 V (with Vcc = 3.3 V) | -7 V to +7 V | A wider common-mode range provides greater noise immunity and tolerance to ground potential differences between nodes in a bus system. |
| Differential Input Sensitivity | ±200 mV | ±200 mV | Sensitivity defines the minimum differential voltage recognized as a valid logic state; identical values indicate comparable noise margin behavior. |
| Propagation Delay | ~15 ns (typical) | ~17 ns (typical) | Propagation delay affects maximum data rate and timing margins; small differences may matter in high-speed or timing-critical designs. |
| Output Type | 3-state (tri-state) outputs | 3-state (tri-state) outputs | Tri-state outputs allow multiple receivers to share a common bus; matching output types supports similar bus architectures. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range determines suitability for industrial and automotive environments; identical ranges indicate equivalent environmental robustness. |
| Package / Mounting | SOIC-16, surface mount | SOIC-16, surface mount | Package and footprint compatibility is essential for PCB layout; matching packages allow the same board design to be reused. |
| Number of Receivers | 4 (quad) | 4 (quad) | Channel count must match the bus width; both being quad receivers means equivalent channel capacity for multi-line interfaces. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26LV32CDR | AM26LS32AIDE4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Type | Receiver | Receiver |
| Protocol | RS422, RS485 | RS422, RS423 |
| Number of Drivers/Receivers | 0/4 | 0/4 |
| Receiver Hysteresis | 50 mV | 50 mV |
| Voltage - Supply | 3V ~ 3.6V | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary differences between the AM26LV32CDR and the AM26LS32AIDE4?
The AM26LV32CDR is a low-voltage quad differential line receiver optimized for 3.3 V operation, while the AM26LS32AIDE4 is a 5 V quad differential line receiver. The AM26LV32CDR is supplied in an SOIC-16 package (tape and reel), whereas the AM26LS32AIDE4 is supplied in a SOIC-16 package qualified to AEC-Q100 for automotive applications.
Are the AM26LV32CDR and AM26LS32AIDE4 pin-compatible?
Both devices are offered in a 16-pin SOIC package with the same quad receiver pinout, so they are pin-compatible at the package level. However, the supply voltage and electrical specifications differ, so circuit-level compatibility must be verified.
What supply voltage does each device require?
The AM26LV32CDR operates from a single 3.3 V supply (typically 3.0 V to 3.6 V). The AM26LS32AIDE4 operates from a single 5 V supply (typically 4.75 V to 5.25 V).
Is the AM26LS32AIDE4 automotive qualified?
Yes. The AM26LS32AIDE4 carries the "E4" suffix indicating AEC-Q100 qualification and is intended for automotive applications. The AM26LV32CDR is a standard commercial-grade device and is not AEC-Q100 qualified.
What are the input common-mode voltage ranges of these receivers?
The AM26LV32CDR supports a common-mode input voltage range of approximately -0.3 V to 5.5 V (referenced to its 3.3 V supply). The AM26LS32AIDE4 supports a common-mode input voltage range of approximately -7 V to +7 V, which is wider and suited to 5 V RS-422/RS-485 systems.
Can the AM26LV32CDR directly replace the AM26LS32AIDE4 in an existing 5 V design?
No. The AM26LV32CDR is a 3.3 V device and cannot be operated directly from a 5 V supply without level shifting and verification of input/output compatibility. A direct drop-in replacement in a 5 V system is not supported by the datasheet.
What are the output logic levels of each device?
The AM26LV32CDR provides 3.3 V-compatible TTL/CMOS output levels referenced to its 3.3 V supply. The AM26LS32AIDE4 provides 5 V TTL-compatible output levels referenced to its 5 V supply. Output levels must be matched to the receiving logic in the target design.
What data rates do these receivers support?
Both devices are specified for RS-422/RS-423 differential data reception. The AM26LV32CDR is characterized for signaling rates up to approximately 32 Mbps, and the AM26LS32AIDE4 is characterized for signaling rates up to approximately 10 Mbps, per their respective manufacturer datasheets.