SCLS303E January   1996  – September 2022 SN54HC640 , SN74HC640

PRODUCTION DATA  

  1. 1 Features
  2. 2 Description
  3. 3 Revision History
  4. 4 Pin Configuration and Functions
  5. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Recommended Operating Conditions (1)
    3. 5.3 Thermal Information
    4. 5.4 Electrical Characteristics
    5. 5.5 Switching Characteristics
    6. 5.6 Operating Characteristics
  6. 6 Parameter Measurement Information
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Functional Modes
  8. 8 Power Supply Recommendations
  9. 9 Layout
    1. 9.1 Layout Guidelines
  10. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • NS|20
  • N|20
  • DW|20
  • PW|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5.4 Electrical Characteristics

PARAMETER TEST CONDITIONS(1) VCC (V) TA = 25°C SN54HC640 SN74HC640 UNIT
MIN TYP MAX MIN MAX MIN MAX
VOH High-level output voltage IOH = –20 μA 2 1.9 1.998 1.9 1.9 V
4.5 4.4 4.400 4.4 4.4
6 5.9 5.999 5.9 5.9
IOH = –6 mA 4.5 3.98 4.3 3.7 3.84
IOH = –7.8 mA 6 5.48 5.8 5.2 5.34
VOL Low-level output voltage IOL = 20 μA 2 0.002 0.1 0.1 0.1 V
4.5 0.001 0.1 0.1 0.1
6 0.001 0.1 0.1 0.1
IOL = 6 mA 4.5 0.17 0.26 0.4 0.33
IOL = 7.8 mA 6 0.15 0.26 0.4 0.33
II Input hold current DIR or OE VI = VCC or 0 6 ±0.1 ±100 ±1000 ±1000 nA
IOZ Off-state output current A or B VI = VCC or 0.
IO = 0		 6 ±0.01 ±0.5 ±10 ±5 μA
ΔICC Supply-current change One input at 0.5V or 2.4 V, Other inputs at 0 or VCC 6 8 160 80 μA
Ci Input capacitance DIR or OE 2 to 6 3 10 10 10 pF
(1) VI = VIH or VIL, unless otherwise noted.