74LVC540A OCTAL BUFFER/ LINE DRIVER WITH 3 STATE OUTPUTS Description Pin Assignments The 74LVC540A is an octal inverting buffer/driver is designed for driving bus lines or buffer memory address registers. The 3-state control gate is a 2-input AND gate with active-low inputs so that, if either output enable (OE1 or OE2) input is high, all eight outputs are in the high-impedance state..These devices feature inputs and outputs on opposite sides of the package that facilitate printed circuit board layout. The device is designed for operation with a power supply range of 1.65V to 3.6V. The inputs are tolerant to 5.5V allowing this device to be used in a mixed voltage environment. The device is fully specified for partial power down applications using I . The I circuitry disables the OFF OFF output preventing damaging current backflow when the device is powered down. Features Applications Supply Voltage Range from 1.65V to 3.6V General Purpose Logic Sinks or Sources 24mA at V = 3V CC Bus Driving CMOS Low Power Consumption Power Down Signal Isolation I Supports Partial Power Down Operation OFF Wide array of products such as: Inputs or Outputs Accept Up to 5.5V PCs, Notebooks, Netbooks, Ultrabooks Inputs Can Be Driven by 3.3V or 5V Allowing for Mixed Voltage Networking Computer Peripherals, Hard Drives, CD/DVD Applications ROM Schmitt Trigger Action at All Inputs TV, DVD, DVR, Set Top Box Typical V (Quiet Output Ground Bounce) Less Than 0.8V with OLP V = 3.3V and T = +25C CC A Typical V (Quiet Output dynamic VOH) Greater than 2.0V with OHV V = 3.3V and T = +25C CC A ESD Protection Tested per JESD 22 Exceeds 200-V Machine Model (A115) Exceeds 2000-V Human Body Model (A114) Exceeds 1000-V Charged Device Model (C101) Latch-Up Exceeds 250mA per JESD 78, Class I All devices are: Totally Lead-Free & Fully RoHS compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See 74LVC540A Ordering Information 74 LVC 540A xxx -13 Logic Device Function Package Packing 74 : Logic Prefix 540 : Octal T20 : TSSOP-20 -13 : 13 Tape & Reel Buffer/Line Q20 : QFN-20 Driver with 3 State Outputs Package Package 13 Tape and Reel Package Part Number Code (Note 4 & 5) Size Quantity Part Number Suffix 6.4mm X 6.5mm X 1.2mm 74LVC540AT20-13 T20 TSSOP-20 2500/Tape & Reel -13 0.65 mm lead pitch 2.5mm X 4.5mm X 0.95mm 74LVC540AQ20-13 Q20 V-QFN4525-20 2500/Tape & Reel -13 0.50 mm lead pitch Notes: 4. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at