Application Report SZZA036B - May 2003 Understanding and Interpreting Standard-Logic Data Sheets Stephen M. Nolan and Jose M. Soltero Standard Linear & Logic ABSTRACT Texas Instruments (TI) standard-logic products data sheets include descriptions of functionality and electrical specifications for the devices. Each specification includes acronyms, numerical limits, and test conditions that may be foreign to the user. The proper understanding and interpretation of the direct, and sometimes implied, meanings of these specifications is essential to correct product selection and associated circuit design. This application report explains each data-sheet parameter in detail, how it affects the device, and, more important, how it impacts the application. This will enable component and system-design engineers to derive the maximum benefit from TI logic devices. Contents Introduction . 6 Top-Level Look at the TI Logic Data Sheet. 6 Summary Device Description. 7 Absolute Maximum Ratings. 9 Recommended Operating Conditions. 9 Electrical Characteristics. 10 Live-Insertion Specifications. 11 Timing Requirements . 12 Switching Characteristics. 12 Noise Characteristics . 13 Operating Characteristics. 14 Parameter Measurement Information. 14 Dissecting the TI Logic Data Sheet. 16 Summary Device Description. 16 Title, Literature Number, and Dates of Origination and Revision. 16 Features Bullets . 22 Package Options and Pinouts. 23 Description . 23 BGA Packaging Top-View Illustrations and Pin-Assignments Table. 23 Ordering Information. 23 Function Table . 24 Logic Diagram . 26 Product Development Stage Note. 27 Absolute Maximum Ratings. 27 Supply Voltage, VCC . 27 Trademarks are the property of their respective owners. 1 SZZA036B Input Voltage, VI . 27 Output Voltage, VO . 28 Voltage Range Applied to Any Output in the High-Impedance or Power-Off State, VO . 28 Voltage Range Applied to Any Output in the High State, VO . 29 Input Clamp Current, IIK . 29 Output Clamp Current, IOK . 29 Continuous Output Current, IO . 29 Continuous Current Through VCC or GND Terminals. 29 Package Thermal Impedance, Junction-to-Ambient, θJA . 29 Storage Temperature Range, Tstg . 30 Recommended Operating Conditions. 30 VCC Supply Voltage. 30 BIAS VCC Bias Supply Voltage. 30 VTT Termination Voltage. 30 Vref Reference Voltage. 31 VIH High-Level Input Voltage. 31 VIL Low-level Input Voltage. 32 IOH High-Level Output Current. 33 IOHS Static High-Level Output Current. 33 IOL Low-Level Output Current. 33 IOLS Static Low-Level Output Current. 34 VI Input Voltage . 34 VO Output Voltage. 35 ∆t/∆v Input Transition Rise or Fall Rate. 35 ∆t/∆VCC Power-Up Ramp Rate. 36 TA Operating Free-Air Temperature. 36 Electrical Characteristics. 39 VT+ Positive-Going Input Threshold Level. 39 VT– Negative-Going Input Threshold Level. 39 ∆VT Hysteresis (VT+ – VT–)40. VIK Input Clamp Voltage. 42 VOH High-Level Output Voltage. 43 VOHS Static High-Level Output Voltage. 43 VOL Low-Level Output Voltage. 43 VOLS Static Low-Level Output Voltage. 44 ron On-State Resistance. ..