SCHS248C November   1998  – April 2025 CD54AC257 , CD54ACT257 , CD74AC257 , CD74ACT257 , CD74ACT258

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 Recommended Operating Conditions
    3. 4.3 Thermal Information
    4. 4.4 Electrical Characteristics
    5. 4.5 Switching Specifications
  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
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support (Analog)
      1. 8.1.1 Related Documentation
    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 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

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

4.4 Electrical Characteristics

PARAMETER SYMBOL TEST CONDITIONS VCC (V) 25°C -40°C TO 85°C -55°C TO 125°C UNIT
VI (V) IO (mA) MIN MAX MIN MAX MIN MAX
AC TYPES
High Level Input Voltage VIH - - 1.5 1.2 - 1.2 - 1.2 - V
3 2.1 - 2.1 - 2.1 - V
5.5 3.85 - 3.85 - 3.85 - V
Low Level Input Voltage VIL - - 1.5 - 0.3 - 0.3 - 0.3 V
3 - 0.9 - 0.9 - 0.9 V
5.5 - 1.65 - 1.65 - 1.65 V
High Level Output Voltage VOH VIH or VIL -0.05 1.5 1.4 - 1.4 - 1.4 - V
-0.05 3 2.9 - 2.9 - 2.9 - V
-0.05 4.5 4.4 - 4.4 - 4.4 - V
-4 3 2.58 - 2.48 - 2.4 - V
-24 4.5 3.94 - 3.8 - 3.7 - V
-75 (1), (2) 5.5 - - 3.85 - - - V
-50 (1), (2) 5.5 - - - - 3.85 - V
Low Level Output Voltage VOL VIH or VIL 0.05 1.5 - 0.1 - 0.1 - 0.1 V
0.05 3 - 0.1 - 0.1 - 0.1 V
0.05 4.5 - 0.1 - 0.1 - 0.1 V
12 3 - 0.36 - 0.44 - 0.5 V
24 4.5 - 0.36 - 0.44 - 0.5 V
75 (1), (2) 5.5 - - - 1.65 - - V
50 (1), (2) 5.5 - - - - - 1.65 V
Input Leakage Current II VCC or GND - 5.5 - ±0.1 - ±1 - ±1 μA
Three-State Leakage Current IOZ VIH or VIL VO = VCC or GND - 5.5 - ±0.5 - ±5 - ±10 μA
Quiescent Supply Current MSI ICC VCC or GND 0 5.5 - 8 - 80 - 160 μA
ACT TYPES
High Level Input Voltage VIH - - 4.5 to 5.5 2 - 2 - 2 - V
Low Level Input Voltage VIL - - 4.5 to 5.5 - 0.8 - 0.8 - 0.8 V
High Level Output Voltage VOH VIH or VIL -0.05 4.5 4.4 - 4.4 - 4.4 - V
-24 4.5 3.94 - 3.8 - 3.7 - V
-75 (1), (2) 5.5 - - 3.85 - - - V
-50 (1), (2) 5.5 - - - - 3.85 - V
Low Level Output Voltage VOL VIH or VIL 0.05 4.5 - 0.1 - 0.1 - 0.1 V
24 4.5 - 0.36 - 0.44 - 0.5 V
75 (1), (2) 5.5 - - - 1.65 - - V
50 (1), (2) 5.5 - - - - - 1.65 V
Input Leakage Current II VCC or GND - 5.5 - ±0.1 - ±1 - ±1 μA
Three-State or Leakage Current IOZ VIH or VIL VO = VCC or GND - 5.5 - ±0.5 - ±5 - ±10 μA
Quiescent Supply Current MSI ICC VCC or GND 0 5.5 - 8 - 80 - 160 μA
Additional Supply Current per Input Pin TTL Inputs High 1 Unit Load ΔICC VCC -2.1 - 4.5 to 5.5 - 2.4 - 2.8 - 3 mA
(1) Test one output at a time for a 1-second maximum duration. Measurement is made by forcing current and measuring voltage to minimize power dissipation.
(2) Test verifies a minimum 50Ω transmission-line-drive capability at 85°C, 75Ω at 125°C.
Table 4-1 ACT Input Load Table
INPUT UNIT LOAD
Data 0.83
S 1.27
OE 1.27
Note: Unit load is ΔICC limit specified in DC Electrical Specifications Table, e.g., 2.4mA max at 25°C.