SCLS527F July   2003  – June 2025 SN74AHC245-Q1

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  Switching Characteristics, VCC = 3.3 V ± 0.3 V
    7. 5.7  Switching Characteristics, VCC = 5 V ± 0.5 V
    8. 5.8  Noise Characteristics
    9. 5.9  Operating Characteristics
    10. 5.10 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 Standard CMOS Inputs
      2. 7.3.2 Balanced CMOS 3-State Outputs
      3. 7.3.3 Wettable Flanks
      4. 7.3.4 Clamp Diode Structure
    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
        1. 8.2.1.1 Power Considerations
        2. 8.2.1.2 Input Considerations
        3. 8.2.1.3 Output Considerations
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

4 Pin Configuration and Functions

SN74AHC245-Q1 SN74AHC245-Q1 PW or DGS Package,20-Pin TSSOP or VSSOP(Top View)Figure 4-1 SN74AHC245-Q1 PW or DGS Package,20-Pin TSSOP or VSSOP(Top View)
SN74AHC245-Q1 SN74AHC245-Q1 WRKS Package,20-Pin WQFN(Top View)Figure 4-2 SN74AHC245-Q1 WRKS Package,20-Pin WQFN(Top View)
Table 4-1 Pin Functions
PINTYPE(1)DESCRIPTION
NO.NAME
1DIRI/ODirection control input (L = B → A, H = A → B)
2A1I/OChannel 1 output/input A
3A2I/OChannel 2 output/input A
4A3I/O

Channel 3 output/input A

5A4I/OChannel 4 output/input A
6A5I/OChannel 5 output/input A
7A6I/OChannel 6 output/input A
8A7I/OChannel 7 output/input A
9A8I/OChannel 8 output/input A
10GND

G

Ground
11B8I/OChannel 8 input/output B
12B7I/OChannel 7 input/output B
13B6I/OChannel 6input/output B
14B5I/OChannel 5input/output B
15B4I/OChannel 4input/output B
16B3I/OChannel 3input/output B
17B2I/OChannel 2input/output B
18B1I/OChannel 1input/output B
19OEI/OOutput enable, active low
20VCC

P

Positive supply
Thermal Pad—

Thermal Pad(2)

(1) I = Input, O = Output, I/O = Input or Output, G = Ground, P = Power.
(2) WRKS Package Only