ST33HTPH2E28AHC2 STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
The ST33HTPH2E28AHC2 is a TPM 1.2 and 2.0 compliant security chip by STMicroelectronics with TCG I2C interface, operating at 1.8 V nominal supply voltage. It features CMOS technology in a 28-pin TSSOP package, supporting secure key storage and hardware-based cryptographic functions for embedded systems.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- ST33HTPH2E28AHC2 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ST33HTPH2E28AHC2?
- Dual compliance with both TPM 1.2 and TPM 2.0 standards for broad platform compatibility
- TCG I2C interface enabling easy integration into embedded and IoT designs
- Operates at 1.8 V nominal with additional 3.3 V operation support for design flexibility
- 28-pin TSSOP (TSSOP28, 0.25 mm pitch) small-outline package for compact PCB layouts
- CMOS technology providing low-power secure cryptographic hardware root of trust
What is ST33HTPH2E28AHC2 used for?
The ST33HTPH2E28AHC2 is widely used in embedded computing platforms, industrial PCs, and IoT gateways requiring hardware-based security and cryptographic key protection. It is suitable for BIOS/UEFI firmware integrity verification, secure boot implementations, and trusted execution environments. Network equipment, edge computing devices, and storage appliances also leverage this TPM chip to comply with industry security mandates.
What are the specifications of ST33HTPH2E28AHC2?
| YTEOL | 0 |
| Additional Feature | ALSO OPERATES AT 3.3V NOMINAL VOLATGE |
| JESD-30 Code | R-PDSO-G28 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP28,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Supply Voltage-Nom | 1.8V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| uPs/uCs/Peripheral ICs Type | CRYPTOGRAPHIC AUTHENTICATOR |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.30 |
Where can I find the ST33HTPH2E28AHC2 datasheet?
ST33HTPH2E28AHC2 Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for ST33HTPH2E28AHC2?
Compatible alternatives and drop-in replacements for ST33HTPH2E28AHC2:
Frequently Asked Questions
What supply voltage does the ST33HTPH2E28AHC2 require, and can it run at 3.3 V?
The ST33HTPH2E28AHC2 operates at a nominal supply voltage of 1.8 V and also supports 3.3 V operation, giving designers flexibility to integrate it with both low-voltage and standard-voltage host systems without additional level-translation circuitry.
Which TPM specification versions does the ST33HTPH2E28AHC2 support, and why does dual compliance matter?
This device is compliant with both TPM 1.2 and TPM 2.0 standards, supporting a 28-pin TSSOP interface over I2C. Dual compliance allows platform vendors to ship a single hardware SKU that works with legacy TPM 1.2 software stacks as well as modern TPM 2.0 operating system drivers and firmware, reducing inventory complexity.
How many pins does the ST33HTPH2E28AHC2 have and what package dimensions should I plan for on my PCB?
The ST33HTPH2E28AHC2 comes in a 28-pin TSSOP package with a 0.25 mm pitch (TSSOP28). This thin small-outline profile allows placement in space-constrained designs, making it suitable for compact industrial modules and embedded boards where PCB area is at a premium.
When would ST33HTPH2E28AHC2 be preferred over a discrete microcontroller for implementing secure boot in an embedded system?
When a design requires a dedicated hardware root of trust with TPM 2.0 firmware integrity verification, the ST33HTPH2E28AHC2 is preferred because it offloads cryptographic operations from the main processor, operates at 1.8 V, and provides tamper-evident key storage that software-only solutions or general-purpose microcontrollers cannot match for security certification requirements.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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