SCES920B September   2020  – March 2023 SN74LXC8T245-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and 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 = 1.2 ± 0.1 V
    7. 6.7  Switching Characteristics, VCCA = 1.5 ± 0.1 V
    8. 6.8  Switching Characteristics, VCCA = 1.8 ± 0.15 V
    9. 6.9  Switching Characteristics, VCCA = 2.5 ± 0.2 V
    10. 6.10 Switching Characteristics, VCCA = 3.3 ± 0.3 V
    11. 6.11 Switching Characteristics, VCCA = 5.0 ± 0.5 V
    12. 6.12 Switching Characteristics: Tsk, TMAX
    13. 6.13 Operating Characteristics
    14. 6.14 Typical Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1 Load Circuit and Voltage Waveforms
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 CMOS Schmitt-Trigger Inputs with Integrated Pulldowns
        1. 8.3.1.1 I/Os with Integrated Dynamic Pull-Down Resistors
        2. 8.3.1.2 Control Inputs with Integrated Static Pull-Down Resistors
      2. 8.3.2 Balanced High-Drive CMOS Push-Pull Outputs
      3. 8.3.3 Partial Power Down (Ioff)
      4. 8.3.4 VCC Isolation and VCC Disconnect (Ioff-float)
      5. 8.3.5 Over-Voltage Tolerant Inputs
      6. 8.3.6 Glitch-Free Power Supply Sequencing
      7. 8.3.7 Negative Clamping Diodes
      8. 8.3.8 Fully Configurable Dual-Rail Design
      9. 8.3.9 Supports High-Speed Translation
    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. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  10. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

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

6.5 Electrical Characteristics

over operating free-air temperature range (unless otherwise noted)(1) (2)
PARAMETER TEST CONDITIONS VCCA VCCB Operating free-air temperature (TA) UNIT
25°C –40°C to 85°C –40°C to 125°C
MIN TYP MAX MIN TYP MAX MIN TYP MAX
VT+ Positive-going input-threshold voltage Data Inputs
(Ax, Bx)
(Referenced to VCCI)		 1.1 V 1.1 V 0.44 0.88 0.44 0.88 V
1.4 V 1.4 V 0.60 0.98 0.60 0.98
1.65 V 1.65 V 0.76 1.13 0.76 1.13
2.3 V 2.3 V 1.08 1.56 1.08 1.56
3 V 3 V 1.48 1.92 1.48 1.92
4.5 V 4.5 V 2.19 2.74 2.19 2.74
5.5 V 5.5 V 2.65 3.33 2.65 3.33
Control Inputs
(OE, DIR)
(Referenced to VCCA)		 1.1 V 1.1 V 0.44 0.88 0.44 0.88 V
1.4 V 1.4 V 0.60 0.98 0.60 0.98
1.65 V 1.65 V 0.76 1.13 0.76 1.13
2.3 V 2.3 V 1.08 1.56 1.08 1.56
3 V 3 V 1.48 1.92 1.48 1.92
4.5 V 4.5 V 2.19 2.74 2.19 2.74
5.5 V 5.5 V 2.65 3.33 2.65 3.33
VT- Negative-going input-threshold voltage Data Inputs
(Ax, Bx)
(Referenced to VCCI)		 1.1 V 1.1 V 0.17 0.48 0.17 0.48 V
1.4 V 1.4 V 0.28 0.59 0.28 0.59
1.65 V 1.65 V 0.35 0.69 0.35 0.69
2.3 V 2.3 V 0.56 0.97 0.56 0.97
3 V 3 V 0.89 1.5 0.89 1.5
4.5 V 4.5 V 1.51 1.97 1.51 1.97
5.5 V 5.5 V 1.88 2.4 1.88 2.4
Control Inputs
(OE, DIR)
(Referenced to VCCA)		 1.1 V 1.1 V 0.17 0.48 0.17 0.48 V
1.4 V 1.4 V 0.28 0.6 0.28 0.6
1.65 V 1.65 V 0.35 0.71 0.35 0.71
2.3 V 2.3 V 0.56 1 0.56 1
3 V 3 V 0.89 1.5 0.89 1.5
4.5 V 4.5 V 1.51 2 1.51 2
5.5 V 5.5 V 1.88 2.46 1.88 2.46
ΔVT Input-threshold hysteresis
(VT+ – VT-)		 Data Inputs
(Ax, Bx)
(Referenced to VCCI)		 1.1 V 1.1 V 0.2 0.4 0.2 0.4 V
1.4 V 1.4 V 0.25 0.5 0.25 0.5
1.65 V 1.65 V 0.3 0.55 0.3 0.55
2.3 V 2.3 V 0.38 0.65 0.38 0.65
3 V 3 V 0.46 0.72 0.46 0.72
4.5 V 4.5 V 0.58 0.93 0.58 0.93
5.5 V 5.5 V 0.69 1.06 0.69 1.06
Control Inputs
(OE, DIR)
(Referenced to VCCA)		 1.1 V 1.1 V 0.2 0.4 0.2 0.4 V
1.4 V 1.4 V 0.25 0.5 0.25 0.5
1.65 V 1.65 V 0.3 0.55 0.3 0.55
2.3 V 2.3 V 0.38 0.65 0.38 0.65
3 V 3 V 0.46 0.72 0.46 0.72
4.5 V 4.5 V 0.58 0.93 0.58 0.93
5.5 V 5.5 V 0.69 1.06 0.69 1.06
VOH High-level output voltage (3) IOH = –100 µA 1.1 V - 5.5 V 1.1 V - 5.5 V VCCO – 0.1 VCCO – 0.1 V
IOH = –4 mA 1.4 V 1.4 V 1 1
IOH = –8 mA 1.65 V 1.65 V 1.2 1.2
IOH = –12 mA 2.3 V 2.3 V 1.9 1.9
IOH = –24 mA 3 V 3 V 2.4 2.4
IOH = –32 mA 4.5 V 4.5 V 3.8 3.8
VOL Low-level output voltage (4) IOL = 100 µA 1.1 V - 5.5 V 1.1 V - 5.5 V 0.1 0.1 V
IOL = 4 mA 1.4 V 1.4 V 0.3 0.3
IOL = 8 mA 1.65 V 1.65 V 0.45 0.45
IOL = 12 mA 2.3 V 2.3 V 0.3 0.3
IOL = 24 mA 3 V 3 V 0.55 0.55
IOL = 32 mA 4.5 V 4.5 V 0.55 0.55
II Input leakage current Control inputs
(DIR, OE)
VI = VCCA or GND		 1.1 V - 5.5 V 1.1 V - 5.5 V -0.1 1.5 -0.1 2 -0.1 2 µA
Data Inputs
(Ax, Bx)
VI = VCCI or GND		 1.1 V - 5.5 V 1.1 V - 5.5 V –0.3 0.3 –1 1 –2 2 µA
Ioff Partial power down current A Port or B Port
VI or VO = 0 V - 5.5 V		 0 V 0 V - 5.5 V –1.5 1.5 –2 2 –2.5 2.5 µA
0 V - 5.5 V 0 V –1.5 1.5 –2 2 –2.5 2.5
Ioff-float Floating supply Partial power down current A Port or B Port
VI or VO = GND		 Floating (6) 0 V - 5.5 V –1.5 1.5 –2 2 –2.5 2.5 µA
0 V - 5.5 V Floating (6) –1.5 1.5 –2 2 –2.5 2.5
IOZ Tri-state output current (5) A or B Port:
VI = VCCI or GND
VO = VCCO or GND
OE = VT+(MAX)		 1.1 V - 5.5 V 1.1 V - 5.5 V –0.3 0.3 –1 1 –2 2 µA
ICCA VCCA supply current VI = VCCI or GND
IO = 0		 1.1 V - 5.5 V 1.1 V - 5.5 V 2 4 8 µA
0 V 5.5 V –0.2 –0.5 –1
5.5 V 0 V 1 2 4
VI = GND
IO = 0		 5.5 V Floating (6) 2 4 8
ICCB VCCB supply current VI = VCCI or GND
IO = 0		 1.1 V - 5.5 V 1.1 V - 5.5 V 2 4 8 µA
0 V 5.5 V 1 2 4
5.5 V 0 V –0.2 –0.5 –1
VI = GND
IO = 0		 Floating (6) 5.5 V 2 4 8
ICCA + ICCB Combined supply current VI = VCCI or GND
IO = 0		 1.1 V - 5.5 V 1.1 V - 5.5 V 4 8 12 µA
ΔICCA VCCA additional supply current per input Control inputs (DIR, OE):
VI = VCCA – 0.6 V
A port = VCCA or GND
B Port = open		 3.0 V - 5.5 V 3.0 V - 5.5 V 50 75 µA
A Port: VI = VCCA – 0.6 V
DIR = VCCA, B Port = open		 3.0 V - 5.5 V 3.0 V - 5.5 V 50 75
ΔICCB VCCB additional supply current per input B Port: VI = VCCB - 0.6 V
DIR = GND, A Port = open		 3.0 V - 5.5 V 3.0 V - 5.5 V 50 75 µA
Ci Control Input Capacitance VI = 3.3 V or GND 3.3 V 3.3 V 2.6 5 5 pF
Cio Data I/O Capacitance OE = VCCA, VO = 1.65V DC +1 MHz -16 dBm sine wave 3.3 V 3.3 V 5.8 10 10 pF
(1) VCCI is the VCC associated with the input port.
(2) VCCO is the VCC associated with the output port.
(3) Tested at VI = VT+(MAX).
(4) Tested at VI = VT-(MIN).
(5) For I/O ports, the parameter IOZ includes the input leakage current.
(6) Floating is defined as a node that is both not actively driven by an external device and has leakage not exeeding 10 nA.