74LVC125A QUADRUPLE 3-STATE BUFFERS Description Pin Assignments The 74LVC125A provides four independent buffers with three state outputs. Each output is independently controlled by an associated output enable pin (OE) which places the device in the high impedance state when driven high. The device is designed for operation with a power supply range of 1.65V to 5.5V. 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 IOFF. The IOFF circuitry disables the output preventing damaging current backflow when the device is powered down. Features Supply Voltage Range from 1.65V to 5.5V Sinks 24mA at Vcc = 3.3V CMOS low power consumption Applications IOFF Supports Partial-Power-Down Mode Operation Voltage Level Shifting Inputs or outputs accept up to 5.5V General Purpose Logic Inputs can be driven by 3.3V or 5.5V allowing for voltage Power Down Signal Isolation translation applications. Wide array of products such as: ESD Protection Exceeds JESD 22 PCs, networking, notebooks, ultrabooks, netbooks 200-V Machine Model (A115-A) Computer peripherals, hard drives, CD/DVD ROM 2000-V Human Body Model (A114-A) TV, DVD, DVR, set top box Exceeds 1000-V Charged Device Model (C101C) Latch-Up Exceeds 250mA per JESD 78, Class II Range of Package Options SO-14 and TSSOP-14 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 74LVC125A Pin Descriptions Pin Number Pin Name Description 1 1OE Data Enable Input (active low) 2 1A Data Input 3 1Y Data Output 4 2OE Data Enable Input (active low) 5 2A Data Input 6 2Y Data Output 7 GND Ground 8 3Y Data Output 9 3A Data Input 10 3OE Data Enable Input (active low) 11 4Y Data Outp 12 4A Data Input 13 4OE Data Enable Input (active low) 14 V Supply Voltage CC Logic Diagram Function Table Inputs Output OE A Y L H H L L L H X Z 2 of 10 July 2012 74LVC125A Diodes Incorporated www.diodes.com Document number: DS35265 Rev. 3 - 2