SCES876A August   2018  – January 2019 SN74AXCH8T245

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Typical Application Schematic
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 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  Switching Characteristics, VCCA = 0.7 V
    7. 6.7  Switching Characteristics, VCCA = 0.8 V
    8. 6.8  Switching Characteristics, VCCA = 0.9 V
    9. 6.9  Switching Characteristics, VCCA = 1.2 V
    10. 6.10 Switching Characteristics, VCCA = 1.5 V
    11. 6.11 Switching Characteristics, VCCA = 1.8 V
    12. 6.12 Switching Characteristics, VCCA = 2.5 V
    13. 6.13 Switching Characteristics, VCCA = 3.3 V
    14. 6.14 Operating Characteristics: TA = 25°C
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Up-Translation and Down-Translation From 0.65 V to 3.6 V
      2. 8.3.2 Multiple Direction Control Pins
      3. 8.3.3 Bus-Hold Circuitry
      4. 8.3.4 Ioff Supports Partial-Power-Down Mode Operation
    4. 8.4 Device Functional Modes
  9. 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
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

6.5 Electrical Characteristics

Over recommended operating free-air temperature range (unless otherwise noted)(1)
PARAMETER TEST CONDITIONS VCCA VCCB –40°C to 85°C –40°C to 125°C UNIT
MIN TYP(2) MAX MIN TYP(2) MAX
VOH High-level output voltage VI = VIH IOH = –100 µA 0.7 V - 3.6 V 0.7 V - 3.6 V VCCO – 0.1 VCCO – 0.1 V
IOH = –50 µA 0.65 V 0.65 V 0.55 0.55
IOH = –200 µA 0.76 V 0.76 V 0.58 0.58
IOH = –500 µA 0.85 V 0.85 V 0.65 0.65
IOH = -3 mA 1.1 V 1.1 V 0.85 0.85
IOH = -6 mA 1.4 V 1.4 V 1.05 1.05
IOH = -8 mA 1.65 V 1.65 V 1.2 1.2
IOH = -9 mA 2.3 V 2.3 V 1.75 1.75
IOH = -12 mA 3 V 3 V 2.3 2.3
VOL Low-level output voltage VI = VIL IOL = 100 µA 0.7 V - 3.6 V 0.7 V - 3.6 V 0.1 0.1 V
IOL = 50 µA 0.65 V 0.65 V 0.1 0.1
IOL = 200 µA 0.76 V 0.76 V 0.18 0.18
IOL = 500 µA 0.85 V 0.85 V 0.2 0.2
IOL = 3 mA 1.1 V 1.1 V 0.25 0.25
IOL = 6 mA 1.4 V 1.4 V 0.35 0.35
IOL = 8 mA 1.65 V 1.65 V 0.45 0.45
IOL = 9 mA 2.3 V 2.3 V 0.55 0.55
IOL = 12 mA 3 V 3 V 0.7 0.7
IBHL Bus-hold low sustaining current (3) VI= 0.20 V 0.65 V 0.65 V 4 4 µA
VI= 0.23 V 0.76 V 0.76 V 8 7
VI= 0.26 V 0.85 V 0.85 V 10 10
VI= 0.39 V 1.1 V 1.1 V 20 20
VI= 0.49 V 1.4 V 1.4 V 40 30
VI= 0.58 V 1.65 V 1.65 V 55 45
VI= 0.7 V 2.3 V 2.3 V 90 80
VI= 0.8 V 3 V 3 V 145 135
IBHH Bus-hold high sustaining current (4) VI= 0.45 V 0.65 V 0.65 V –4 –4 µA
VI= 0.53 V 0.76 V 0.76 V –8 –7
VI= 0.59 V 0.85 V 0.85 V –10 –10
VI= 0.71 V 1.1 V 1.1 V –20 –20
VI= 0.91 V 1.4 V 1.4 V –40 –30
VI= 1.07 V 1.65 V 1.65 V –55 –45
VI= 1.6 V 2.3 V 2.3 V –90 –80
VI= 2.0 V 3 V 3 V –145 –135
IBHLO Bus-hold low overdrive current (5) VI= 0 to VCC 0.75 V 0.75 V 40 40 µA
0.84 V 0.84 V 50 50
0.95 V 0.95 V 65 65
1.3 V 1.3 V 105 105
1.6 V 1.6 V 150 150
1.95 V 1.95 V 205 205
2.7 V 2.7 V 335 335
3.6V 3.6V 480 480
IBHHO Bus-hold high overdrive current (6) VI= 0 to VCC 0.75 V 0.75 V –40 –40 µA
0.84 V 0.84 V –50 –50
0.95 V 0.95 V –65 –65
1.3 V 1.3 V –105 –105
1.6 V 1.6 V –150 –150
1.95 V 1.95 V –205 –205
2.7 V 2.7 V –335 –335
3.6V 3.6V –480 –480
II Input leakage current Control Inputs (DIR, OE):
VI = VCCA or GND		 0.65 V - 3.6 V 0.65 V - 3.6 V –0.5 0.5 –1 1 µA
Ioff Partial power
down current		 A Port:
VI or VO = 0 V - 3.6 V		 0 V 0 V - 3.6 V –8 8 –12 12 µA
B Port:
VI or VO = 0 V - 3.6 V		 0 V - 3.6 V 0 V –8 8 –12 12
IOZ High-impedance state output current A Port:
VO = VCCO or GND, VI = VCCI or GND, OE = VIH 		3.6 V 3.6 V –8 8 –12 12 µA
B Port:
VO = VCCO or GND, VI = VCCI or GND, OE = VIH 		3.6 V 3.6 V –8 8 –12 12
ICCA VCCA supply current VI = VCCI or GND, IO = 0 mA 0.65 V - 3.6 V 0.65 V - 3.6 V 20 42 µA
0 V 3.6 V –2 –12
3.6 V 0 V 13 27
ICCB VCCB supply current VI = VCCI or GND, IO = 0 mA 0.65 V - 3.6 V 0.65 V - 3.6 V 20 40 µA
0 V 3.6 V 13 27
3.6 V 0 V –2 –12
ICCA + ICCB Combined supply current VI = VCCI or GND, IO = 0 mA 0.65 V - 3.6 V 0.65 V - 3.6 V 30 60 µA
Ci Input capacitance Control Inputs (DIR, OE):
VI = 3.3 V or GND		 3.3 V 3.3 V 4.5 4.5 pF
Cio Data I/O capacitance Ports A and B:
OE = VCCA, VO = 1.65V DC +
1 MHz -16 dBm sine wave		 3.3 V 3.3 V 7.3 7.3 pF
(1) VCCO is the VCC associated with the output port.
(2) All typical values are for TA = 25°C.
(3) The bus-hold circuit can sink at least the minimum low sustaining current at VIL(MAX). IBHL should be measured after lowering VI to GND and then raising it to VIL(MAX).
(4) The bus-hold circuit can source at least the minimum high sustaining current at VIH(MIN). IBHH should be measured after raising VI to VCC and then lowering it to VIH(MIN).
(5) An external driver must source at least IBHLO to switch this node from low to high.
(6) An external driver must sink at least IBHHO to switch this node from high to low.