ZHCSIL3A August   2018  – January 2019 SN74AXCH8T245

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     典型应用原理图
  4. 4 修订历史记录
  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. 12器件和文档支持
    1. 12.1 文档支持
      1. 12.1.1 相关文档
    2. 12.2 接收文档更新通知
    3. 12.3 社区资源
    4. 12.4 商标
    5. 12.5 静电放电警告
    6. 12.6 术语表
  13. 13机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

5 Pin Configuration and Functions

PW Package
24-Pin TSSOP
Top View
SN74AXCH8T245 SN74AXC8T245_PW_PACKAGE_DRAWING.gif
RHL Package(1)
24-Pin VQFN
Top View
SN74AXCH8T245 SN74AXC8T245_RHL_PACKAGE_DRAWING.gif

Pin Functions

PIN I/O DESCRIPTION
NAME PW, RHL
A1 3 I/O Input/output A1. Referenced to VCCA.
A2 4 I/O Input/output A2. Referenced to VCCA.
A3 5 I/O Input/output A3. Referenced to VCCA.
A4 6 I/O Input/output A4. Referenced to VCCA.
A5 7 I/O Input/output A5. Referenced to VCCA.
A6 8 I/O Input/output A6. Referenced to VCCA.
A7 9 I/O Input/output A7. Referenced to VCCA.
A8 10 I/O Input/output A8. Referenced to VCCA.
B1 21 I/O Input/output B1. Referenced to VCCB.
B2 20 I/O Input/output B2. Referenced to VCCB.
B3 19 I/O Input/output B3. Referenced to VCCB.
B4 18 I/O Input/output B4. Referenced to VCCB.
B5 17 I/O Input/output B5. Referenced to VCCB.
B6 16 I/O Input/output B6. Referenced to VCCB.
B7 15 I/O Input/output B7. Referenced to VCCB.
B8 14 I/O Input/output B8. Referenced to VCCB.
DIR1 2 I Direction-control signal. Referenced to VCCA.
DIR2 11 I Direction-control signal. Referenced to VCCA. See for additional details. Tie to GND to maintain backwards compatibility with the SN74AVCH8T245 device.
GND 12 — Ground
13 — Ground
OE 22 I Output Enable. Pull to GND to enable all outputs. Pull to VCCA to place all outputs in high-impedance mode. Referenced to VCCA.
VCCA 1 — A-port supply voltage. 0.65 V ≤ VCCA ≤ 3.6 V
VCCB 23 — B-port supply voltage. 0.65 V ≤ VCCB ≤ 3.6 V
24 — B-port supply voltage. 0.65 V ≤ VCCB ≤ 3.6 V
(1) PAD - may be grounded (recommended) or left floating.
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