74HCT126 QUADRUPLE 3-STATE BUFFERS OE HIGH Description Pin Assignments The 74HCT126 provides provides four independent buffer gates with 3-state outputs. Each buffer has a separate enable pin that if driven with a low logic level places the corresponding output in the high impedance state. The device is designed for operation with a power supply range of 4.5V to 5.5V. Features Wide Supply Voltage Range from 4.5V to 5.5V Pin Compatible with Low Power Schottky (LSTTL) Inputs Are TTL Voltage Level Compatible Sinks or sources 4mA at V = 4.5V CC CMOS low power consumption Schmitt Trigger Action at All Inputs ESD Protection Exceeds JESD 22 200-V Machine Model (A115-A) Applications 2000-V Human Body Model (A114-A) General Purpose Logic Exceeds 1000-V Charged Device Model (C101C) Wide array of products such as: Range of Package Options SO-14 and TSSOP-14 PCs, networking, notebooks, netbooks Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Computer peripherals, hard drives, CD/DVD ROM Halogen and Antimony Free. Green Device (Note 3) TV, DVD, DVR, set top box Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See 74HCT126 Pin Descriptions Pin Number Pin Name Description 1 1OE Data Enable Input (active high) 2 1A Data Input 3 1Y Data Output 4 2OE Data Enable Input (active high) 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 high) 11 4Y Data Output 12 4A Data Input 13 4OE Data Enable Input (active high) 14 V Supply Voltage CC Logic Diagram Function Table Inputs Output OE A Y H H H H L L L X Z 2 of 8 January 2013 74HCT126 Diodes Incorporated www.diodes.com Document number: DS35337 Rev. 3 - 2