Part A
AM26LV32CDR
Texas Instruments
- Lifecycle
- Active
- Stock
- 3036 Stückzahl
- Package
- SOIC-16
- Series
- Interface-Treiber, Empfänger, Transceiver
Replacement verdict
Compatible functional replacement candidate
The AM26LV32CDR and AM26LS32ACDG4 are both quad differential line receivers in a 16-pin SOIC package with matching pinout and function, making them viable functional substitutes in many designs. However, the AM26LV32CDR is a low-voltage (3.3 V) device while the AM26LS32ACDG4 operates at 5 V, so supply voltage, input common-mode range, and output logic levels must be validated against the target application before substitution.
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
AM26LS32ACDG4
Texas Instruments
- Lifecycle
- Active
- Stock
- 5692 Stückzahl
- Package
- SOIC-16
- Series
- Interface-Treiber, Empfänger, Transceiver
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 | AM26LS32ACDG4 | 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. |
| Receiver Type / Standard | Low-voltage RS-422 / RS-485 quad differential line receiver | RS-422 / RS-423 / RS-485 quad differential line receiver | Both are quad differential receivers, but the AM26LV32C is optimized for low-voltage signaling while the AM26LS32AC supports classic 5 V RS-422/RS-423/RS-485 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 margin and ground-potential tolerance in harsh industrial buses. |
| Output Logic Levels | 3.3 V-compatible TTL/CMOS levels | 5 V TTL-compatible levels | Output levels must match the downstream logic family; mixing 3.3 V and 5 V outputs can cause interface incompatibility. |
| Propagation Delay (typical) | ~10 ns | ~17 ns | Faster propagation delay in the AM26LV32C supports higher data rates and tighter timing budgets in high-speed serial links. |
| Package | SOIC-16 (D, tape and reel) | SOIC-16 (D, tube/rail) | Both use the same 16-pin SOIC footprint, but packaging format (reel vs tube) affects assembly line handling and inventory. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings mean both suit the same industrial ambient conditions. |
| Number of Receivers | 4 (quad) | 4 (quad) | Matching receiver count ensures the same channel density per package for multi-line bus designs. |
| Fail-Safe / Input Hysteresis | ~50 mV input hysteresis | ~50 mV input hysteresis | Comparable hysteresis provides similar noise immunity on floating or terminated bus lines. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26LV32CDR | AM26LS32ACDG4 |
|---|---|---|
| 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 | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AM26LV32CDR and the AM26LS32ACDG4?
The AM26LV32CDR is a low-voltage quad differential line receiver optimized for 3.3 V operation, while the AM26LS32ACDG4 is a 5 V quad differential line receiver. The AM26LV32CDR supports a supply range of 3.0 V to 3.6 V, whereas the AM26LS32ACDG4 operates from a 5 V nominal supply. Both are quad receivers in SOIC-16 packages, but they differ in supply voltage, input thresholds, and output drive characteristics.
Are the AM26LV32CDR and AM26LS32ACDG4 pin-compatible?
Both devices are offered in a 16-pin SOIC (D) package with the same quad receiver pinout: four receiver inputs, four outputs, enable inputs, VCC, and GND. The pin functions and package footprint are compatible, but the supply voltage difference must be verified against the target design before substitution.
What supply voltage does each device require?
The AM26LV32CDR operates from a 3.0 V to 3.6 V supply (3.3 V nominal), while the AM26LS32ACDG4 operates from a 5 V nominal supply (4.75 V to 5.25 V per the standard 5 V logic family). The supply voltage must match the host system before considering either part.
Do both devices meet TIA/EIA-422 and TIA/EIA-485 input requirements?
Both the AM26LV32CDR and AM26LS32ACDG4 are designed to meet the input requirements of TIA/EIA-422 and TIA/EIA-485 (RS-422 and RS-485) balanced data transmission standards, providing differential input sensitivity and common-mode range suitable for these interfaces. Designers should confirm the specific common-mode and sensitivity limits in the respective datasheets for the target application.
What is the difference in input sensitivity and common-mode range?
The AM26LV32CDR specifies a differential input sensitivity of ±200 mV over a common-mode range of −7 V to +7 V, consistent with RS-422/RS-485 requirements. The AM26LS32ACDG4 also provides ±200 mV sensitivity with a common-mode range of −7 V to +7 V. Both meet the standard balanced-interface sensitivity threshold, though the exact limits should be confirmed in each manufacturer datasheet.
Can the AM26LV32CDR be used as a drop-in replacement for the AM26LS32ACDG4?
Not directly. Although the pinout and package are compatible, the AM26LV32CDR is a 3.3 V device and the AM26LS32ACDG4 is a 5 V device. Substitution requires verifying that the system supply, input signal levels, output logic levels, and enable logic thresholds are compatible with the replacement part. A 5 V system cannot directly use the 3.3 V part without level considerations, and vice versa.
What are the output logic levels of each receiver?
The AM26LV32CDR provides 3.3 V-compatible output levels (TTL/CMOS-compatible at VCC = 3.3 V), while the AM26LS32ACDG4 provides 5 V TTL-compatible output levels. The output high and low voltages must match the downstream logic family in the design.
Which device is better suited for low-power or battery-operated designs?
The AM26LV32CDR, operating at 3.3 V, is generally better suited for low-power and battery-operated systems because lower supply voltage reduces power consumption and allows direct interfacing with 3.3 V logic. The AM26LS32ACDG4 is intended for legacy 5 V systems. Actual power consumption should be verified from the respective datasheets.