ZHCSQW2B August   2022  – January 2023 SN74LV244A-Q1

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  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, VCC = 2.5 V ± 0.2 V
    7. 6.7  Switching Characteristics, VCC = 3.3 V ± 0.3 V
    8. 6.8  Switching Characteristics, VCC = 5 V ± 0.5 V
    9. 6.9  Noise Characteristics
    10. 6.10 Operating Characteristics
    11. 6.11 Typical Characteristics
  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 Balanced CMOS 3-State Outputs
      2. 8.3.2 Latching Logic
      3. 8.3.3 Partial Power Down (Ioff)
      4. 8.3.4 Wettable Flanks
      5. 8.3.5 Clamp Diode Structure
    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 Power Considerations
      2. 9.2.2 Input Considerations
      3. 9.2.3 Output Considerations
      4. 9.2.4 Detailed Design Procedure
      5. 9.2.5 Application Curves
    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 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 支持资源
    4. 10.4 Trademarks
    5. 10.5 静电放电警告
    6. 10.6 术语表
  11. 11Mechanical, Packaging, and Orderable Information

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5 Pin Configuration and Functions

GUID-20210730-SS0I-6FGJ-V3VL-1HLPZRRWNCKT-low.gifFigure 5-1 SN74LV244A-Q1: WRKS Package,20-Pin WQFN(Top View)
GUID-20211101-SS0I-WLZK-VT5B-R6TG4ZK7S5RP-low.gifFigure 5-2 SN74LV244A-Q1: DGS Package,20-Pin VSSOP(Top View)
Table 5-1 Pin Functions
PINTYPE(1)DESCRIPTION
NAMENO.
1OE1IBank 1, output enable, active low
1A12IBank 1, channel 1 input
2Y43OBank 2, channel 4 output
1A24IBank 1, channel 2 input
2Y35OBank 2, channel 3 output
1A36IBank 1, channel 3 input
2Y27OBank 2, channel 2 output
1A48IBank 1, channel 4 input
2Y19OBank 2, channel 1 output
GND10

G

Ground
2A111IBank 2, channel 1 input
1Y412OBank 1, channel 4 output
2A213IBank 2, channel 2 input
1Y314OBank 1, channel 3 output
2A315IBank 2, channel 3 input
1Y216OBank 1, channel 2 output
2A417IBank 2, channel 4 input
1Y118OBank 1, channel 1 output
2OE19IBank 2, output enable, active low
VCC20

P

Positive supply
(1) I = Input, O = Output, I/O = Input or Output, G = Ground, P = Power.