Part A
AM26LV32CDR
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 3036 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 AM26LV32CDR and AM26LS32ACNSRG4 are both quad differential line receivers with similar logic functions, but they differ in supply voltage range, signaling standard, propagation delay, and package footprint. The AM26LV32CDR operates from a 3.0 V to 3.6 V supply and is optimized for low-voltage differential signaling, while the AM26LS32ACNSRG4 operates from a 4.75 V to 5.25 V supply and targets 5 V RS-422/RS-423 systems. Designers should validate supply compatibility, timing margins, and board layout before substituting one for the other in a given application.
Supply Voltage Range
Validation required
Signaling Standard
Validation required
Propagation Delay
Validation required
Package Type
Not compatible
Parts at a glance
Part B
AM26LS32ACNSRG4
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 7377 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 | AM26LV32CDR | AM26LS32ACNSRG4 | 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) RS-422 | LS (Standard) RS-422 | The logic family determines input thresholds and output levels, affecting compatibility with surrounding 3.3 V or 5 V logic. |
| Input Voltage Range (Common-Mode) | -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 in RS-422/RS-485 buses. |
| Propagation Delay (typ) | ~10 ns | ~17 ns | Propagation delay affects maximum data rate and timing margins in high-speed serial links. |
| Output Current Drive | ±6 mA (typical TTL load) | ±8 mA (typical) | Output drive capability determines fan-out and the ability to drive downstream logic or cables. |
| Package | SOIC-16 (D) | SOIC-16 (NS) | Package footprint and pinout must match for board-level substitution; both are 16-pin SOIC but differ in manufacturer-specific package codes. |
| Operating Temperature Range | -40 °C to 85 °C | -40 °C to 85 °C | Both cover the industrial temperature range, so thermal suitability is equivalent for most applications. |
| Number of Receivers | 4 | 4 | Channel count must match for functional equivalence; both provide four differential receivers. |
| Fail-Safe / Open Input | Open-circuit fail-safe (outputs high) | Open-circuit fail-safe (outputs high) | Fail-safe behavior ensures a defined output when the bus is idle or disconnected, preventing indeterminate logic states. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26LV32CDR | AM26LS32ACNSRG4 |
|---|---|---|
| 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 AM26LS32ACNSRG4?
The AM26LV32CDR is a low-voltage quad differential line receiver optimized for 3.3 V operation (with 5 V tolerant inputs), supplied in an SOIC-16 package and specified over the 0°C to 70°C commercial temperature range. The AM26LS32ACNSRG4 is a 5 V quad differential line receiver in an SO-16 package, specified over the 0°C to 70°C temperature range and supplied in tape-and-reel. The primary differences are the recommended supply voltage (3.3 V vs 5 V), input voltage tolerance, and package type.
Are the AM26LV32CDR and AM26LS32ACNSRG4 pin-compatible?
Both devices are quad differential line receivers offered in 16-pin packages (SOIC-16 for the AM26LV32CDR and SO-16 for the AM26LS32ACNSRG4) with the same industry-standard pinout for the four receiver channels, enable inputs, and supply/ground pins. However, pin compatibility should be confirmed against the respective manufacturer datasheets before substitution, since package land patterns and thermal characteristics may differ.
Can the AM26LV32CDR and AM26LS32ACNSRG4 be used interchangeably in a design?
Not without design validation. The AM26LV32CDR is intended for 3.3 V systems and features 5 V tolerant inputs, while the AM26LS32ACNSRG4 is a 5 V device. Substitution requires verifying supply voltage compatibility, input common-mode range, output logic levels, and timing against the target design and the manufacturer datasheets for both parts.
What supply voltage does each device require?
The AM26LV32CDR operates from a nominal 3.3 V supply and is designed for low-voltage systems, with inputs tolerant of 5 V signals. The AM26LS32ACNSRG4 operates from a nominal 5 V supply. Exact recommended operating ranges should be taken from the respective manufacturer datasheets.
What are the input common-mode voltage ranges of these receivers?
The AM26LV32CDR is specified with an input common-mode range suitable for 3.3 V low-voltage differential signaling applications, and its inputs are 5 V tolerant. The AM26LS32ACNSRG4 is specified for 5 V operation with a common-mode range appropriate to RS-422/RS-485-type differential interfaces. Consult the manufacturer datasheets for the exact specified common-mode limits of each device.
What package and temperature grade options apply to these parts?
The AM26LV32CDR is supplied in an SOIC-16 package and is specified over the 0°C to 70°C commercial temperature range. The AM26LS32ACNSRG4 is supplied in an SO-16 package in tape-and-reel form and is also specified over the 0°C to 70°C commercial temperature range. Both are quad differential line receivers intended for balanced differential data transmission.
Which device is better suited for a 3.3 V system?
The AM26LV32CDR is the appropriate choice for 3.3 V systems, as it is specifically designed for low-voltage operation with 5 V tolerant inputs. The AM26LS32ACNSRG4 is a 5 V device and is not intended for direct 3.3 V supply operation without validation against its datasheet specifications.