My Inquiry
My Account
Texas Instruments TMP1827NGRR
- Part No.:
- TMP1827NGRR
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TMP1827NGRR.pdf
- Description:
- TEMP SENSOR
- Quantity:
- Payment:
- Shipping:
Inventory:4,455
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TMP1827NGRR from Texas Instruments is a 1-Wire®-compatible digital temperature sensor IC with integrated 2-Kbit EEPROM and SHA-256-HMAC authentication engine, delivering ±0.2°C max accuracy from +10°C to +45°C, operating from 1.7V to 5.5V, and supporting 90kbps overdrive communication - deployed in cold-chain monitoring, medical accessories, and EV charging infrastructure for secure thermal validation.
For engineers reviewing the TMP1827NGRR datasheet, TMP1827NGRR pinout, TMP1827NGRR application, or TMP1827NGRR equivalent, this page delivers verified electrical specs, authenticated memory behavior, temperature alert I/O configuration, and functional safety documentation support - all confirmed for the NGR (WSON-8) package variant.
Technical Context
The TMP1827NGRR implements a parasitic- or VDD-powered 1-Wire® interface with CRC-protected multi-drop bus operation and integrated 8-kV IEC 61000-4-2 ESD protection on SDQ. Its temperature sensing path uses an internal thermal BJT with 16-bit resolution (7.8125 m°C/LSB) and factory-traceable NIST calibration.
Authentication is performed via hardware-accelerated SHA-256-HMAC compliant with FIPS 180-4 and FIPS 198-1, using keys stored in protected EEPROM. The 2-Kbit user EEPROM supports 64-bit block writes, 256-bit page-level write protection, and authenticated memory writes - enabling tamper-resistant device identity and parameter storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Accuracy | ±0.2°C max (10°C to 45°C); enables high-fidelity thermal validation in medical and industrial control loops |
| Operating Voltage | 1.7V–5.5V (bus- or VDD-powered); supports direct integration into low-voltage battery systems and legacy 5V industrial buses |
| 1-Wire® Speed | 90kbps overdrive mode; reduces thermal measurement latency by >3× vs standard speed for real-time response |
| EEPROM Size & Protection | 2-Kbit user memory with 256-bit page write protection; prevents accidental overwrite of calibrated offsets or security keys |
| Authentication Engine | FIPS 180-4/198-1 compliant SHA-256-HMAC; provides cryptographically verifiable device identity for supply chain integrity |
| Supply Current | 94 µA active (temp conversion), 1.3 µA shutdown; extends battery life in portable cold-chain loggers |
| ESD Rating | ±8-kV contact discharge (IEC 61000-4-2) on SDQ; eliminates need for external TVS in harsh industrial environments |
Pinout & Package
Package: WSON-8 (NGR), 2.50 mm × 2.50 mm, thermally enhanced with exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDQ | 1-Wire® bidirectional data I/O | Carries power (bus mode), commands, and data; integrates 8-kV ESD protection and glitch filtering |
| VDD | Supply voltage input | Enables VDD-powered mode; must be grounded in bus-powered configurations |
| GND | Ground reference | Common return for analog/digital circuits and thermal pad connection |
| ADDR | Resistor-selectable address input | Configures short address using 6.49–54.9 kΩ resistor; avoids bus enumeration delays |
| IO0–IO3 | Configurable open-drain I/Os | Support general-purpose signaling or temperature alert (IO2/ALERT); each requires external pullup |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 64-bit ID | NIST-traceable unique serial number for unambiguous device addressing and calibration traceability |
| Authenticated memory writes | Prevents unauthorized firmware or calibration data modification via HMAC-verified EEPROM updates |
| Multi-mode power architecture | Seamless transition between bus-powered (parasitic) and VDD-powered modes for system-level redundancy |
| Programmable temperature alerts | Configurable high/low thresholds with interrupt-capable IO2 pin for autonomous thermal fault detection |
| Functional safety documentation | Delivers FIT rate data, failure mode analysis, and diagnostic coverage reports for ISO 26262/IEC 61508 compliance |
Applications
| Cold Chain Monitoring | Medical Accessories |
|---|---|
Use Scenario: Continuous temperature logging during pharmaceutical transport with tamper-evident data integrity. IC Role / Device Role / Timing Role: Primary temperature sensor and secure data logger; performs periodic conversions and signs EEPROM-stored readings. Use Value: ±0.2°C accuracy ensures regulatory compliance (USP <1085>, WHO); SHA-256-HMAC prevents post-deployment data falsification. |
Use Scenario: Real-time patient temperature acquisition in CPAP machines and wearable diagnostics. IC Role / Device Role / Timing Role: High-precision thermal monitor with alert-driven I/O; triggers IO2/ALERT on out-of-range events. Use Value: 7.8125 m°C resolution enables sub-degree clinical decisions; 1.3 µA shutdown current extends battery runtime in portable units. |
| EV Charging Infrastructure | Industrial Battery Chargers |
Use Scenario: Thermal management of DC fast-charging connectors and onboard power modules. IC Role / Device Role / Timing Role: Safety-critical temperature supervisor with authenticated firmware update capability. Use Value: –55°C to +150°C range covers extreme ambient and self-heating conditions; functional safety docs accelerate ASIL-B certification. |
Use Scenario: Cell-level thermal profiling and calibration storage in multi-bay Li-ion charger systems. IC Role / Device Role / Timing Role: Calibration anchor and secure parameter store; retains per-channel offset corrections in EEPROM. Use Value: 2-Kbit EEPROM with 256-bit page protection preserves factory calibration across 20,000+ write cycles at 125°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMP1826NGRR | No SHA-256-HMAC engine; lacks authenticated memory write and key storage | Suitable for cost-sensitive thermal monitoring without cryptographic requirements | Select when security features are unnecessary and BOM cost reduction is prioritized |
| TMP1827NNGRR | ±0.9°C max accuracy (–55°C to +150°C); same package, memory, and authentication features | Targeted at non-critical industrial zones where ±0.2°C precision is not mandated | Choose for extended-range applications where accuracy tolerance is relaxed and qualification overhead is lower |
Compared with TMP1827NGRR, TMP1826NGRR omits security functionality entirely, while TMP1827NNGRR retains full cryptographic capability but trades precision for broader qualification margin - making TMP1827NGRR the only option meeting both high-accuracy and FIPS-compliant authentication requirements simultaneously.
Availability
TMP1827NGRR is available at Aetrix Electronics and suitable for cold-chain monitoring, medical accessories, and EV charging infrastructure requiring stable component supply, long-term calibration traceability, and production-grade security certification.
Supply support for TMP1827NGRR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader focused on analog and embedded processing technologies, with decades of expertise in precision sensing and industrial-grade reliability.
The TMP1827 product line was engineered for secure, high-accuracy thermal validation in safety-critical systems - combining metrology-grade temperature sensing, cryptographically enforced data integrity, and robust 1-Wire® interoperability.
FAQ
What is the maximum temperature accuracy specification for TMP1827NGRR?
The TMP1827NGRR achieves ±0.2°C maximum accuracy across +10°C to +45°C, ±0.3°C from –40°C to +105°C, and ±0.4°C from –55°C to +150°C. This specification applies specifically to the TMP1827 variant (not TMP1827N), and is validated per the device's factory calibration and NIST-traceable process. The TMP1827NGRR maintains this accuracy without external compensation.
Does TMP1827NGRR support both bus-powered and VDD-powered operation?
Yes, TMP1827NGRR supports dual-power modes: bus-powered (parasitic) operation using only SDQ and GND, and VDD-powered mode with dedicated supply. In bus-powered mode, the internal capacitor charges via SDQ and powers temperature conversion and EEPROM access. VDD must be grounded in that configuration. Mode selection is automatic based on VDD pin state at power-up.
How does the SHA-256-HMAC authentication work in TMP1827NGRR?
TMP1827NGRR implements hardware-accelerated SHA-256-HMAC per FIPS 180-4 and FIPS 198-1 standards. Keys are stored in protected EEPROM and loaded into secure flops for computation. Authentication covers memory reads/writes and device identification, enabling cryptographically verifiable data integrity and origin assurance - critical for anti-counterfeiting in medical and automotive supply chains.
What is the function of the ADDR pin on TMP1827NGRR?
The ADDR pin on TMP1827NGRR selects a short device address using an external resistor (6.49 kΩ to 54.9 kΩ). This enables faster enumeration on multi-drop 1-Wire® buses by reducing SEARCH command overhead. If unused, TI specifies grounding ADDR to prevent floating inputs and ensure deterministic behavior during initialization.
Can TMP1827NGRR's IO pins be used for temperature alerting?
Yes - IO2 on TMP1827NGRR is configurable as a temperature alert output. When enabled, it asserts open-drain low upon crossing user-defined high/low thresholds stored in EEPROM. IO0–IO3 are general-purpose open-drain I/Os, each requiring external pullup resistors. All four support programmable drive strength and can be used for status signaling or system handshaking alongside thermal monitoring.
TMP1827NGRR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -55°C ~ 150°C
- Sensing Temperature - Remote:
- -
- Output Type:
- 1-Wire®
- Voltage - Supply:
- 1.7V ~ 5.5V
- Resolution:
- 16 b
- Features:
- One-Shot, Shutdown Mode, Standby Mode
- Accuracy - Highest (Lowest):
- ±0.9°C
- Test Condition:
- -55°C ~ 150°C
- Operating Temperature:
- -55°C ~ 150°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-WSON (2.5x2.5)
TMP1827NGRR FAQ
1.How can I place an order for TMP1827NGRR through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP1827NGRR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMP1827NGRR reliable?
The price and inventory of TMP1827NGRR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP1827NGRR is usually 5 days.
3.What payment methods are accepted for TMP1827NGRR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP1827NGRR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP1827NGRR?
TMP1827NGRR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP1827NGRR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMP1827NGRR?
For technical support, including TMP1827NGRR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP1827NGRR requirements.
6.How does Aetrix verify that TMP1827NGRR is sourced from the original manufacturer or authorized distributors?
All TMP1827NGRR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMP1827NGRR meets industry standards.
7.What is the process for return or replacement of TMP1827NGRR?
All TMP1827NGRR units undergo pre-shipment inspection (PSI). If there is an issue with TMP1827NGRR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMP1827NGRR part is unused and in its original packaging.
Return procedure for TMP1827NGRR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TMP1827NGRR Tags
-
MCP9700T-E/TT
Microchip Technology
-
MCP9700T-E/LT
Microchip Technology
-
MCP9701T-E/TT
Microchip Technology
-
MCP9701T-E/LT
Microchip Technology
-
TMP235A4DBZR
Texas Instruments
-
MCP9700AT-E/TT
Microchip Technology
-
MCP9700AT-E/LT
Microchip Technology
-
MCP9701AT-E/LT
Microchip Technology
-
MCP9701AT-E/TT
Microchip Technology
,TO-226_straightlead.jpg)
-
LM335Z
STMicroelectronics
-
TMP1075NDRLR
Texas Instruments
-
TMP1075DGKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
