SNIS241 September   2025 TMP461-EP

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Information
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Two-Wire Timing Requirements
    7. 6.7 Timing Diagrams
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Temperature Measurement Data
        1. 7.3.1.1 Decoding Temperature Data
      2. 7.3.2 Series Resistance Cancellation
      3. 7.3.3 Differential Input Capacitance
      4. 7.3.4 Filtering
      5. 7.3.5 Sensor Fault
      6. 7.3.6 ALERT and THERM Functions
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode (SD)
    5. 7.5 Programming
      1. 7.5.1 Serial Interface
        1. 7.5.1.1 Bus Overview
        2. 7.5.1.2 Bus Definitions
        3. 7.5.1.3 Serial Bus Address
        4. 7.5.1.4 Read and Write Operations
        5. 7.5.1.5 Timeout Function
        6. 7.5.1.6 High-Speed Mode
      2. 7.5.2 General-Call Reset
  9. 8 Register Map
    1. 8.1 Register Information
      1. 8.1.1  Pointer Register
      2. 8.1.2  Local and Remote Temperature Registers
      3. 8.1.3  Status Register
      4. 8.1.4  Configuration Register
      5. 8.1.5  Conversion Rate Register
      6. 8.1.6  One-Shot Start Register
      7. 8.1.7  Channel Enable Register
      8. 8.1.8  Consecutive ALERT Register
      9. 8.1.9  η-Factor Correction Register
      10. 8.1.10 Remote Temperature Offset Register
      11. 8.1.11 Manufacturer Identification Register
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Related Documentation
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.5 Electrical Characteristics

At TA = –55°C to 125°C and V+ = 1.7V to 3.6V, unless otherwise noted
PARAMETERCONDITIONSMINTYPMAXUNIT
TEMPERATURE MEASUREMENT
TLOCALLocal temperature sensor accuracyTA = –10°C to 100°C-1±0.1251°C
TA = –55°C to 125°C-1.25±0.51.25
TREMOTERemote temperature sensor accuracyTA = 0°C to 100°C, TD = –55°C to 150°C-1±0.1251°C
TA = -55°C to 125°C, TD = –55°C to 150°C-1.5±0.51.5
TERROR_PSTemperature sensor error versus supply (local or remote)V+ = 1.7V to 3.6V-0.3±0.10.3°C/V
TRESTemperature resolution
(local and remote)		0.0625°C
ADC resolution12Bits
tCONVADC conversion timeOne-shot mode, per channel (local or remote)1517ms
RSERIESRemote sensor source currentHighSeries resistance 1kΩ (max)85120155µA
Medium304560
Low57.510
ηRemote transistor ideality factorTMP461-EP optimized ideality factor1.008
SERIAL INTERFACE (SCL, SDA)
VIHHigh-level input voltage1.4V
VILLow-level input voltage0.45V
VHYSTHysteresis200mV
SDA output-low sink current6mA
VOLLow-level output voltageIO = –6mA0.150.4V
IINSerial bus input leakage current0V ≤ VIN ≤ 3.6V–11μA
CINSerial bus input capacitanceSCL3.5pF
SDA5pF

Serial bus clock frequency

2.17MHz

Serial bus timeout

202530ms
DIGITAL INPUTS (A0, A1)
VIHHigh-level input voltage0.9×(V+)(V+) + 0.3V
VILLow-level input voltage–0.30.1×(V+)V
IINInput leakage current0V ≤ VIN ≤ 3.6V–11μA
CINInput capacitance4.5pF
DIGITAL OUTPUTS (THERM1, ALERT/THERM2)
Output-low sink current6mA
VOLLow-level output voltageIO = –6mA0.150.4V
IOHHigh-level output leakage currentVO = V+1μA
POWER SUPPLY
V+Specified supply voltage range1.73.6V
IQQuiescent currentActive conversion, local sensor240375µA
Active conversion, remote sensors400600
Standby mode (between conversions)1535
Shutdown mode, serial bus inactive38
Shutdown mode, serial bus active, fS = 400kHz90
Shutdown mode, serial bus active, fS = 2.17MHz350
PORPower-on reset thresholdRising edge1.411.55V