SCPS245E December   2012  – October 2025 TCA9517A

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 I2C Interface Switching Characteristics
    8. 5.8 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Two-Channel Bidirectional Buffer
      2. 7.3.2 Active-High Repeater-Enable Input
      3. 7.3.3 VOL B-Side Offset Voltage
      4. 7.3.4 Standard Mode and Fast Mode Support
      5. 7.3.5 Clock Stretching Support
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Clock Stretching Support
        2. 8.2.2.2 VILC and Pullup Resistor Sizing
      3. 8.2.3 Application Curve
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Tape and Reel Information
    2. 13.2 Mechanical Data

5.7 I2C Interface Switching Characteristics

VCCB = 2.7V to 5.5V, GND = 0V, TA = –40°C to 85°C (unless otherwise noted)(1) (4)
PARAMETERFROM
(INPUT)		TO
(OUTPUT)		TEST CONDITIONSMINTYP(5)MAXUNIT
tPLZPropagation delaySDAB, SCLB(3) (see Figure 6-4)SDAA, SCLA(3) (see Figure 6-4)80141350 ns
SDAA, SCLA(2) (see Figure 6-3)SDAB, SCLB(2) (see Figure 6-3)2574110
tPZLPropagation delaySDAB, SCLBSDAA, SCLAVCCA ≤ 2.7V (see Figure 6-2)3076(6)110ns
VCCA ≥ 3V
(see Figure 6-2)		1086230
SDAA, SCLA(2) (see Figure 6-3)SDAB, SCLB(2) (see Figure 6-3)60107230
tTLHTransition timeB-side to A side80%20%VCCA ≤ 2.7V
(see Figure 6-3)		101215ns
VCCA ≥ 3V
(see Figure 6-3)		404245
A side to B-side
(see Figure 6-2)		110125140
tTHLTransition timeB-side to A side80%20%VCCA ≤ 2.7V
(see Figure 6-3)		152(6)105ns
VCCA ≥ 3V
(see Figure 6-3)		2067175
A side to B-side
(see Figure 6-2)		304890
(1) Times are specified with loads of 1.35kΩ pull-up resistance and 50pF load capacitance on the B-side and 167Ω pull-up and 57pF load capacitance on the A side. Different load resistance and capacitance alter the RC time constant, thereby changing the propagation delay and transition times.
(2) The proportional delay data from A to B-side is measured at 0.3VCCA on the A side to 1.5V on the B-side.
(3) The tPLH delay data from B to A side is measured at 0.4V on the B-side to 0.5VCCA on the A side when VCCA is less than 2 V, and 1.5 V on the A side if VCCA is greater than 2 V.
(4) pull-up voltages are VCCA on the A side and VCCB on the B-side.
(5) Typical values were measured with VCCA = VCCB = 3.3V at TA = 25°C, unless otherwise noted.
(6) Typical value measured with VCCA = 2.7V at TA = 25°C