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AM26C32CNSR
Texas Instruments
IC RECEIVER 0/4 16SO
4320 Pcs New Original In Stock
0/4 Receiver RS422, RS423 16-SO
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Minimum 1
5.0 / 5.0
- (491 Ratings)
AM26C32CNSR
Product Overview
1229921
DiGi Electronics Part Number
AM26C32CNSR-DGManufacturer
Texas Instruments
AM26C32CNSR
Description
IC RECEIVER 0/4 16SOInventory
4320 Pcs New Original In Stock
0/4 Receiver RS422, RS423 16-SO
Quantity
Minimum 1
Minimum 1
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AM26C32CNSR Technical Specifications
Category
Interface, Drivers, Receivers, Transceivers
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Last Time Buy
Type
Receiver
Protocol
RS422, RS423
Number of Drivers/Receivers
0/4
Duplex
-
Receiver Hysteresis
60 mV
Data Rate
-
Voltage - Supply
4.5V ~ 5.5V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.209", 5.30mm Width)
Supplier Device Package
16-SO
Base Product Number
AM26C32
Datasheet & Documents
HTML Datasheet
AM26C32CNSR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
AM26C32CNSRG4-DG
AM26C32CNSRE4
296-31469-1
AM26C32CNSR-DG
AM26C32CNSRG4
AM26C32CNSRE4-DG
296-31469-2
296-31469-6
Standard Package
2,000
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
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Frequently Asked Questions (FAQ)
Can the AM26C32CNSR be safely replaced with the AM26C32INSR in a 5V industrial control system operating at 60°C ambient, and what are the key risks if the design relies on tight timing margins?
While the AM26C32CNSR and AM26C32INSR are functionally identical in protocol support (RS422/RS423) and pinout, the AM26C32INSR is rated for an extended industrial temperature range (-40°C to 85°C), whereas the AM26C32CNSR is commercial grade (0°C to 70°C). At 60°C ambient, the AM26C32CNSR remains within spec, but thermal margin is reduced—especially if PCB heating or enclosure effects push junction temperatures higher. If your system operates near the upper end of the temperature range or has tight propagation delay tolerances, substituting with the AM26C32INSR improves reliability and timing stability. However, verify that your PCB layout and supply decoupling meet TI’s recommendations, as marginal layouts can exacerbate timing skew even with a more robust part.
What design risks should I consider when using the AM26C32CNSR in a multi-drop RS422 network with long cable runs exceeding 30 meters, and how does its 60 mV hysteresis impact noise immunity?
The AM26C32CNSR’s 60 mV receiver hysteresis provides moderate noise immunity, but in long-cable, multi-drop RS422 applications (>30m), ground potential differences and electromagnetic interference can induce common-mode noise that exceeds safe levels. Without proper termination (120 Ω at both ends) and isolation, signal reflections and ground loops may cause data errors—even if the differential signal appears valid. The AM26C32CNSR lacks built-in fail-safe biasing, so unused receiver inputs must be tied to a valid logic state (e.g., via pull-up/down resistors) to prevent oscillation. For harsh environments, consider adding transient voltage suppressors (TVS diodes) on the line side and ensure your system meets IEC 61000-4-2/4 surge requirements. If noise margins are tight, evaluate upgrading to a transceiver with higher hysteresis (e.g., SN65HVD72) or galvanic isolation.
Is the AM26C32CNSR suitable for battery-powered field devices where power supply stability fluctuates between 4.7V and 5.3V, and how might voltage ripple affect receiver performance?
The AM26C32CNSR operates within its specified 4.5V to 5.5V range under your supply conditions, but voltage ripple—especially high-frequency noise from switching regulators—can degrade receiver sensitivity and increase bit error rates. The part has no internal regulation, so ensure your power delivery network includes adequate bulk and high-frequency decoupling (e.g., 10 μF tantalum + 100 nF ceramic near VCC). Ripple exceeding 200 mVpp may push the supply near the lower threshold during transient loads, risking undefined logic states. In battery-powered designs with long life requirements, also consider quiescent current: while the AM26C32CNSR draws minimal current, cumulative load from multiple ICs can impact runtime. Validate performance under worst-case load and temperature using an oscilloscope to monitor VCC and differential input waveforms.
Given that the AM26C32CNSR is in Last Time Buy status, what long-term supply chain risks should I evaluate before designing it into a new product, and are there drop-in replacements with better lifecycle support?
The Last Time Buy status of the AM26C32CNSR indicates it is nearing end-of-life, posing significant supply chain risks for new designs requiring 5–10 year production runs. Even with current inventory (4,296 pcs), future shortages or price volatility are likely. While the AM26C32INSR (industrial grade) is a direct electrical and mechanical substitute, it shares the same lifecycle risk. For future-proofing, consider migrating to newer TI devices like the SN65HVD3082E or AM26C31/32Q-Q1 automotive-grade variants, which offer enhanced ESD protection, wider temperature ranges, and active product status. Perform a full design-in validation including signal integrity, power sequencing, and fault tolerance before committing. If redesign isn’t feasible, secure a last-time purchase agreement with TI or authorized distributors and implement lifetime buy planning.
How should I handle unused receiver channels on the AM26C32CNSR to avoid oscillation or excess power consumption in a compact 16-SOIC layout with limited PCB real estate?
Unused receiver inputs on the AM26C32CNSR must never be left floating, as they can oscillate due to noise pickup, causing excessive power draw and potential interference with active channels. In space-constrained 16-SOIC designs, tie each unused input pair (A and B) to a valid differential state: connect one pin to VCC via a 1 kΩ resistor and the other to GND via a 1 kΩ resistor, creating a ~2.5V common-mode voltage with 0V differential—ensuring the output settles to a defined logic level (typically high for RS422 receivers). Avoid direct shorting of A and B, as this may not guarantee a valid state under all conditions. This method requires minimal board space and resistors can be placed on the solder side if needed. Always verify output states during power-up testing to confirm stability.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
AM26C32CNSR CAD Models
Texas Instruments AM26C32CNSR PCB symbols & footprints
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