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Microchip Technology ATSHA204A-SSHDA-B
- Part No.:
- ATSHA204A-SSHDA-B
- Manufacturer:
- Microchip Technology
- Category:
- Specialized ICs
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Description:
- IC AUTHENTICATION CHIP 8SOIC
- Quantity:
Unit Price:$0.36
Ext Price:$0.36
- Payment:
- Shipping:
Product Details
ATSHA204A-SSHDA-B - SHA-256 I2C Authentication IC, SOIC
ATSHA204A-SSHDA-B from Microchip Technology is a SHA-256 symmetric-authentication device with protected key storage in a tube-packed 8-lead SOIC.
Specifications were checked against the manufacturer data sheet and current distributor listing.
Overview
ATSHA204A supports SHA-256 MAC/HMAC authentication with secure EEPROM key slots. SSHDA-B specifies the I2C interface, SOIC package and 100-piece tube.
Key Advantages
Protects secrets in dedicated hardware.
Uses a conventional 8-lead SOIC for established assembly lines.
Available in an established surface-mount or through-hole ordering format.
Electrical and environmental limits are defined by the official data sheet.
Feature Summary
SHA-256 symmetric authentication
I2C, up to 1 MHz
2.0 to 5.5 V supply; -40 to +85 C
8-SOIC
Package & Footprint
This ordering code uses the 8-SOIC package.
Pin Functions
Confirm exact numbering and the latest land pattern before PCB release.
Key Specifications
| Function | SHA-256 symmetric authentication |
|---|---|
| Key storage | Up to 16 slots |
| EEPROM | 4.5 Kbit for keys and data |
| OTP memory | 512 bits |
| Unique serial number | 72 bits |
| Interface | I2C, up to 1 MHz for DA variant |
| Supply | 2.0 to 5.5 V |
| Communication voltage | 1.8 to 5.5 V |
| Sleep current | 150 nA maximum under stated conditions |
| Operating temperature | -40 to +85 C |
| Authentication | SHA-256 MAC and HMAC options |
| Ordering code | DA denotes I2C interface |
| Package | 8-lead 0.150-inch SOIC |
| Packaging | Tube, 100 pieces |
Replacement Considerations
ATSHA204A-SSHDA-T is a related product in the library. Confirm electrical behavior, package, pinout, ordering media and configuration before substitution.
Similarity of family name or package does not establish drop-in compatibility.
Manufacturer Information
Microchip lists ATSHA204A in production; DS40002025A identifies the SSHDA-B tube variant.
Applications
Challenge-response validation of replaceable units.
Protected key storage for host systems.
Quality & Authenticity
Match the complete ordering code, package marking and reel or lot label to authorized-channel records. Inspect moisture handling and solderability requirements before assembly.
FAQ
What is the main function?
SHA-256 symmetric authentication
What package is used?
8-SOIC
Can the related part be substituted directly?
No. Validate all electrical, mechanical and configuration differences first.
Is the package image ready?
Yes. The registered package JPG is present locally.
Engineering Notice
Use the latest manufacturer documentation for schematic, PCB, thermal and production approval. Distributor attributes are useful for sourcing but do not replace the official data sheet.
ATSHA204A-SSHDA-B Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- CryptoAuthentication™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Authentication Chip
- Applications:
- Networking and Communications
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
- Grade:
- -
- Qualification:
- -
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Inventory:17,264
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In Stock:17,264
| Qty. | Unit Price | Ext. Price |
| 1+ | $0.36 | $0.36 |
| 25+ | $0.30 | $7.50 |
| 100+ | $0.29 | $29.00 |
