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ATSHA204-SH-DA-B
Microchip Technology
IC AUTHENTICATION CHIP 8SOIC
2144 Pcs New Original In Stock
Authentication Chip 8-SOIC
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Minimum 1
5.0 / 5.0
- (492 Ratings)
ATSHA204-SH-DA-B
Product Overview
11672466
DiGi Electronics Part Number
ATSHA204-SH-DA-B-DGManufacturer
Microchip Technology
ATSHA204-SH-DA-B
Description
IC AUTHENTICATION CHIP 8SOICInventory
2144 Pcs New Original In Stock
Authentication Chip 8-SOIC
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
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Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
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ATSHA204-SH-DA-B Technical Specifications
Category
Specialized ICs
Packaging
-
Series
CryptoAuthentication™
Product Status
Obsolete
DiGi-Electronics Programmable
Not Verified
Type
Authentication Chip
Applications
Networking and Communications
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Supplier Device Package
8-SOIC
Base Product Number
ATSHA204
Datasheet & Documents
HTML Datasheet
ATSHA204-SH-DA-B-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
5A992C
HTSUS
8542.31.0001
Additional Information
Other Names
ATSHA204SHDAB
Standard Package
2,900
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)
Dec 02, 2025
Reliability and excellent customer care define DiGi Electronics' approach.
Dec 02, 2025
Customer feedback is valued highly, and it reflects in their proactive after-sales assistance.
Dec 02, 2025
Logistics were well-coordinated, and my package arrived in perfect condition and promptly.
Dec 02, 2025
Fast delivery service significantly enhanced my shopping experience.
Dec 02, 2025
DiGi Electronics' after-sales service is prompt and efficient, which I greatly appreciate.
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Frequently Asked Questions (FAQ)
Can the ATSHA204-SH-DA-B be safely used in new designs given its obsolete status, and what are the long-term reliability and supply chain risks?
The ATSHA204-SH-DA-B is marked as obsolete, which introduces significant supply chain risks for new designs. While current stock may suffice for prototyping or short production runs, long-term reliability and end-of-life support are concerns. We recommend migrating to the recommended replacement, ATSHA204A-SSHDA-B, which offers improved availability, enhanced security features, and continued manufacturer support. If you must use the ATSHA204-SH-DA-B, secure extended inventory early and evaluate second-source options to mitigate discontinuation risks.
How does the ATSHA204-SH-DA-B compare to the ATSHA204A-SSHDA-B in terms of hardware integration and design-in effort for secure authentication in IoT devices?
The ATSHA204-SH-DA-B and ATSHA204A-SSHDA-B share pin-to-pin compatibility and identical 8-SOIC packaging, making hardware replacement straightforward. However, the ATSHA204A-SSHDA-B includes firmware and security protocol improvements, requiring validation of firmware-handshake routines and library compatibility. Designers should update host microcontroller code to leverage the newer chip's stronger cryptographic performance and bug fixes, minimizing integration risks during the transition.
What are the critical design constraints when integrating the ATSHA204-SH-DA-B into a battery-powered wireless sensor node with limited PCB space?
When integrating the ATSHA204-SH-DA-B into space-constrained, low-power systems, key constraints include managing its 1.8V to 5.5V operating voltage range and minimizing wake-time current draw. Use a low-quiescent-current voltage regulator and implement I²C bus timeouts to prevent bus lock-up. Ensure minimal trace lengths between the ATSHA204-SH-DA-B and the MCU to reduce EMI susceptibility, especially in noisy RF environments common in wireless networking applications.
Is the ATSHA204-SH-DA-B susceptible to cloning or side-channel attacks in field deployment, and what mitigation strategies should be applied?
While the ATSHA204-SH-DA-B provides hardware-based SHA-256 authentication, it lacks some advanced tamper-detection features found in newer variants. In field deployments, protect against side-channel attacks by randomizing challenge-response timing via the host MCU and shielding the I²C lines. Avoid hardcoding keys; instead, leverage the device’s secure key storage during provisioning. For higher-security applications, migrate to the ATSHA204A-SSHDA-B, which has improved resistance to glitch and timing attacks.
What are the risks of using non-programmed or unverified ATSHA204-SH-DA-B chips from third-party suppliers like DiGi-Electronics, and how can authentication failures be avoided?
Using ATSHA204-SH-DA-B chips from suppliers where programmability is 'Not Verified' increases the risk of receiving pre-programmed, misconfigured, or counterfeit units. To avoid authentication failures, perform OTP and slot configuration verification during initial bring-up using Microchip's configuration tools. Always program the device in a secure environment and lock configuration zones permanently. For mission-critical designs, source only from authorized distributors to ensure genuine, unprogrammed parts.
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.
ATSHA204-SH-DA-B CAD Models
Microchip Technology ATSHA204-SH-DA-B PCB symbols & footprints
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