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Analog Devices Inc./Maxim Integrated DS2478ATB/VY+T
- Part No.:
- DS2478ATB/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Specialized ICs
- Package:
- 10-WFDFN Exposed Pad
- Description:
- IC DEEPCOVER SEC COPROC 10TDFN
- Quantity:
Unit Price:$0
Ext Price:$0
- Payment:
- Shipping:
Product Details
DS2478ATB/VY+T - Automotive Secure Coprocessor
The Analog Devices DS2478ATB/VY+T is a DeepCover automotive ECC-P256 and SHA-256 secure coprocessor in a 10-WFDFN Exposed Pad package, identified by the manufacturer as a 10-pin, 3 mm × 3 mm side-wettable TDFN-EP.
The complete /VY+T suffix identifies the automotive-qualified, side-wettable, lead-free tape-and-reel variant. Electrical and pin information below is for the DS2478 family and this documented package.
Overview
DS2478 offloads ECC-P256 ECDSA, ECDH and SHA-256/HMAC operations from a host controller. It is intended for secure authentication with compatible DS28C40 or DS28E40 devices and includes a true random-number generator, protected one-time-programmable memory and one configurable open-drain GPIO. The host controls the device through I2C.
Key Advantages
Hardware ECC-P256 and SHA-256 engines reduce host cryptography workload.
The /V ordering code denotes an automotive-qualified part; the data sheet specifies AEC-Q100 Grade 1.
Secured OTP memory, a factory 64-bit identifier and TRNG support authenticated workflows.
The /Y side-wettable 10-pin TDFN package supports board-level solder-joint inspection.
Feature Summary
ECDSA signature and verification plus ECDH session-key establishment.
SHA-256 and HMAC with configurable authenticated memory operations.
6 Kbits of OTP, allocated as 3 Kbits user memory and 3 Kbits keys/secrets in the manufacturer's description.
I2C interface, one configurable open-drain GPIO and unique 64-bit ROM ID.
Package & Footprint
The customer product record and package registry name is 10-WFDFN Exposed Pad. The manufacturer calls this exact order code a 10-pin side-wettable TDFN-EP, 3 mm × 3 mm, code T1033Y+2. Consult outline 21-100346 and land pattern 90-0003 for the footprint and solder-pad design.
- Verify the manufacturer's side-wettable package outline and pin-1 orientation.
- Leave DNC pins unconnected.
- Solder the exposed pad evenly to the ground plane.
- Provide suitable I2C pull-up resistors to VCC.
The expected production package JPG is missing. Supply and visually verify it before publication.
Pin Functions
Manufacturer top-view pin description for the 10-pin TDFN-EP:
Do not connect.
Configurable general-purpose I/O.
Ground.
I2C serial clock; pull up to VCC.
Open-drain I2C data; pull up to VCC.
Supply voltage.
Solder evenly to the board ground plane.
Check the final footprint against the manufacturer's top-view diagram, not this text alone.
Key Specifications
| Function | Automotive secure ECC/SHA-256 coprocessor |
|---|---|
| Supply voltage | 2.97 V min; 3.3 V typ; 3.63 V max |
| Operating temperature | -40°C to +125°C |
| Automotive grade | AEC-Q100 Grade 1, per manufacturer |
| Host interface | I2C, SCL up to 1 MHz under specified conditions |
| Cryptographic engines | ECC P-256 / ECDSA / ECDH and SHA-256 / HMAC |
| OTP capacity | 6 Kbits total; 3 Kbits user and 3 Kbits keys/secrets |
| Identifier | Factory-programmed 64-bit ROM ID |
| GPIO | One configurable open-drain pin |
| GPIO low output | 0.4 V at 4 mA sink, manufacturer condition |
| Package | 10-pin 3 mm × 3 mm side-wettable TDFN-EP; T1033Y+2 |
| Order suffix | /V automotive-qualified; Y side-wettable; + lead-free; T tape and reel |
Use the data-sheet operating and timing conditions when designing to these limits. Absolute-maximum ratings do not establish operating performance.
Replacement Considerations
Do not treat another DS2478 order code or a DS2476-series coprocessor as a drop-in replacement. Compare automotive qualification, /Y side-wettable package, pinout, 10-pin land pattern, temperature, voltage, memory resources, GPIO count, host protocol and security provisioning. No unverified internal replacement link is provided.
Manufacturer Information
Analog Devices documents DS2478 as a DeepCover automotive secure coprocessor. The manufacturer's Rev. 0 data sheet explicitly lists the DS2478ATB/VY+T order code and its package and temperature range. Consult current manufacturer revisions and qualification notices for release decisions.
Applications
Authenticate vehicle accessories, tools and controlled components.
Support identity and cryptographic protection in connected nodes.
Contribute authenticated operations to a reviewed secure-boot process.
Store sensitive materials under a defined provisioning and access policy.
Quality & Authenticity
Verify the complete DS2478ATB/VY+T marking, packaging, lot traceability and manufacturer documentation. Automotive and security claims must be evaluated at the system level; confirm qualification evidence and application requirements before release.
FAQ
What does /VY+T mean?
According to the ordering table, /V is automotive qualification, Y is the side-wettable TDFN form, + denotes lead-free packaging and T denotes tape and reel.
Which pins must remain unconnected?
Pins 1, 3, 4, 6 and 9 are marked DNC in the manufacturer pin description.
Is the exposed pad optional?
No. The manufacturer directs that it be soldered evenly to the board ground plane for proper operation.
Engineering Notice
Before production, verify the latest controlled data sheet, footprint, I2C timing, supply, automotive qualification and security design. The referenced package JPG is not available on the production site; keep this page unpublished until the image is present and visually checked.
DS2478ATB/VY+T Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- DeepCover®
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- DeepCover Secure Coprocessor
- Applications:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 10-TDFN (3x3)
- Grade:
- -
- Qualification:
- -
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