SCHS340C March   2003  – August 2024 CD74ACT157

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Description
  4. 3 Pin Configuration and Functions
  5. 4 Specifications
    1. 4.1 Absolute Maximum Ratings
    2. 4.2 ESD Ratings
    3. 4.3 Recommended Operating Conditions
    4. 4.4 Thermal Information
    5. 4.5 Electrical Characteristics
    6. 4.6 Switching Characteristics
    7. 4.7 Operating Characteristics
  6. 5 Parameter Measurement Information
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Power Supply Recommendations
    2. 7.2 Layout
      1. 7.2.1 Layout Guidelines
      2. 7.2.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support (Analog)
      1. 8.1.1 Related Links
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 31
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • PW|16
  • N|16
  • D|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

3 Pin Configuration and Functions

CD74ACT157 N, D, or PW Package; 16-Pin PDIP, SOIC, or TSSOP (Top View)Figure 3-1 N, D, or PW Package; 16-Pin PDIP, SOIC, or TSSOP (Top View)
Table 3-1 Pin Functions
PIN TYPE(1) DESCRIPTION
NAME NO.
A/B 1 I Address select
1A 2 I Channel 1, data input A
1B 3 I Channel 1, data input B
1Y 4 O Channel 1, data output
2A 5 I Channel 2, data input A
2B 6 I Channel 2, data input B
2Y 7 O Channel 2, data output
GND 8 G Ground
3Y 9 O Channel 3, data output
3B 10 I Channel 3, data input B
3A 11 I Channel 3, data input A
4Y 12 O Channel 4, data output
4B 13 I Channel 4, data input B
4A 14 I Channel 4, data input A
G 15 I Output strobe, active low
VCC 16 P Positive supply
Thermal pad(2) — The thermal pad can be connected to GND or left floating. Do not connect to any other signal or supply.
(1) Signal Types: I = Input, O = Output, I/O = Input or Output, P = Power, G = Ground.
(2) WBQB package only.