SCAS294O
JANUARY 1993 – June 2015
SN54LVC257A
,
SN74LVC257A
PRODUCTION DATA.
1
Features
2
Applications
3
Description
4
Revision History
5
Device Options
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information: 16-Pin Packages
7.5
Thermal Information: 20-Pin Package
7.6
Electrical Characteristics
7.7
SN54LVC257A Switching Characteristics
7.8
SN74LVC257A Switching Characteristics
7.9
Operating Characteristics
7.10
Typical Characteristics
8
Parameter Measurement Information
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.4
Device Functional Modes
10
Application and Implementation
10.1
Application Information
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.3
Application Curves
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Documentation Support
13.1.1
Related Documentation
13.2
Related Links
13.3
Community Resources
13.4
Trademarks
13.5
Electrostatic Discharge Caution
13.6
Glossary
14
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
PW|16
MPDS361A
DB|16
MPDS507A
RGY|16
MPQF115G
D|16
MPDS178G
NS|16
MPDS551A
Thermal pad, mechanical data (Package|Pins)
RGY|16
QFND040P
Orderable Information
scas294o_oa
scas294o_pm
8 Parameter Measurement Information
Figure 3. Load Circuit and Voltage Waveforms