Part A
AM26LV32CDR
德州儀器
- Lifecycle
- Active
- Stock
- 3036 件
- Package
- SOIC-16
- Series
- 介面-驅動器、接收器、收發器
Replacement verdict
Compatible functional replacement candidate
The AM26LV32CDR is a functionally compatible candidate for the AM26LS32AID in 3.3 V low-voltage differential receiver applications, sharing the same quad differential receiver function and SOIC-16 footprint, but it is not a direct drop-in substitute because the two devices differ in supply voltage range, signaling standard compliance, and operating temperature grade. Designers should validate supply rail compatibility, differential input thresholds, and thermal margin before substituting.
Supply Voltage Range
Validation required
Signaling Standard Compliance
Validation required
Package and Pinout
High match
Operating Temperature Range
Validation required
Parts at a glance
Part B
AM26LS32AID
德州儀器
- Lifecycle
- Active
- Stock
- 1948 件
- Package
- SOIC-16
- Series
- 介面-驅動器、接收器、收發器
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AM26LS32AID | AM26LV32CDR | Why it matters |
|---|---|---|---|
| Supply Voltage (Vcc) | 5 V (4.75 V to 5.25 V) | 3.3 V (3.0 V to 3.6 V) | The two devices operate on different supply rails, so they are not drop-in replacements without adjusting the system power supply. |
| Receiver Type | Quad differential line receiver (RS-422/RS-485 compatible) | Quad differential line receiver (low-voltage RS-422/RS-485 compatible) | Both are quad differential receivers, but the low-voltage variant is optimized for 3.3 V signaling environments. |
| Input Common-Mode Voltage Range | -7 V to +7 V | -0.3 V to Vcc + 0.3 V (approximately -0.3 V to 3.6 V) | The wider common-mode range of the AM26LS32AID provides greater noise immunity and compatibility with 5 V bus systems. |
| Propagation Delay | Typical ~20 ns | Typical ~15 ns | Faster propagation delay in the AM26LV32CDR can benefit higher-speed data links, though both are suitable for standard RS-422/RS-485 rates. |
| Output Logic Level Compatibility | TTL-compatible outputs (5 V logic) | LVTTL-compatible outputs (3.3 V logic) | Output logic levels must match the downstream controller's input thresholds; mixing 5 V and 3.3 V logic can cause interfacing issues. |
| Package | SOIC-16 (16-pin) | SOIC-16 (16-pin) | Identical package and pinout allow physical board compatibility, but electrical differences still prevent direct substitution. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Both cover the industrial temperature range, so thermal environment is not a differentiator between the two parts. |
| Number of Receivers | 4 | 4 | Both provide four independent receivers, matching channel count requirements for multi-line bus interfaces. |
| Fail-Safe / Input Hysteresis | Input hysteresis ~50 mV typical | Input hysteresis ~50 mV typical | Similar hysteresis provides comparable noise immunity for both devices in noisy industrial environments. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26LV32CDR | AM26LS32AID |
|---|---|---|
| Part Status | Active | Active |
| 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 AM26LS32AID and AM26LV32CDR?
The AM26LS32AID is a quad differential line receiver from Texas Instruments designed for RS-422, RS-423, and RS-485 applications, operating from a 5 V supply. The AM26LV32CDR is a quad differential line receiver optimized for low-voltage operation, typically operating from a 3.3 V supply. The AM26LV32CDR is specified for lower supply voltages and has different input common-mode and output voltage characteristics compared to the 5 V AM26LS32AID.
Are the AM26LS32AID and AM26LV32CDR pin-compatible?
Both devices are offered in 16-pin SOIC packages with the same quad receiver pinout (four receiver inputs, four outputs, VCC, and GND). However, pin compatibility alone does not guarantee interchangeability; the supply voltage and electrical specifications must be verified against the target design before substitution.
What supply voltage does each device require?
The AM26LS32AID operates from a single 5 V supply (typically 4.75 V to 5.25 V). The AM26LV32CDR is designed for low-voltage operation, typically 3.0 V to 3.6 V. The supply voltage difference is a critical factor when considering substitution between the two parts.
Do both devices support RS-422 and RS-485 differential signaling?
Yes, both the AM26LS32AID and AM26LV32CDR are quad differential line receivers intended for balanced differential data transmission, including RS-422 and RS-485 interfaces. The AM26LS32AID is also commonly used in RS-423 applications. Designers should confirm input common-mode range and receiver thresholds against the specific interface standard in use.
What are the operating temperature ranges for these devices?
The AM26LS32AID is specified over the industrial temperature range of -40°C to +85°C. The AM26LV32CDR is also specified over the industrial temperature range of -40°C to +85°C. Both parts are suitable for industrial-grade applications within these limits.
Can the AM26LV32CDR directly replace the AM26LS32AID in an existing 5 V design?
No. The AM26LV32CDR is a low-voltage device intended for 3.3 V operation and is not specified for 5 V supply operation. Substituting it into a 5 V design would exceed its recommended operating conditions. The AM26LS32AID should be used where a 5 V supply is required.
What package options are available for each device?
The AM26LS32AID is available in a 16-pin SOIC package (suffix D). The AM26LV32CDR is also available in a 16-pin SOIC package (suffix D) and is supplied in tape-and-reel form (suffix R). Package and ordering suffix details should be confirmed against the respective manufacturer datasheets.