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74HCT164 Arkusz danych(PDF) 1 Page - Diodes Incorporated |
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74HCT164 Arkusz danych(HTML) 1 Page - Diodes Incorporated |
1 / 10 page 74HCT164 Document number: DS36280 Rev. 2 - 2 1 of 10 www.diodes.com August 2015 © Diodes Incorporated 74HCT164 8-BIT PARALLEL-OUT SERIAL SHIFT REGISTERS Description The 74HCT164 is a serial input 8-bit edge-triggered shift register that has outputs from each of eight stages. SERIAL DATA INPUT PINS The serial input data is entered at pin SDA or pin SDB as these are logically ANDED. Either input could be used as an active HIGH enable with data entry on the other pin. If a single input is desired, the pins can be tied together or the unused input can be tied HIGH. DATA ENTRY Data is shifted into Q0 from the serial input pins on each LOW to HIGH transition of the CP pin. Also, during the CP edge the data is transferred from each Qn to Qn+1. The serial data on pins DSA and DSB must be stable before and after the CP rising edge to meet the set-up and hold timing requirements. RESET When asserted LOW the Master Reset ( MR ) pin sets all Qn to LOW. This action does not depend on the condition of serial input or clock pins. The MR must be asserted HIGH for a recovery time before the next CP positive edge pulse. Features Supply Voltage Range from 4.5V to 5.5V Sinks or Sources 4mA at VCC = 4.5V CMOS Low Power Consumption Schmitt Trigger Action at All Inputs TTL Compatible ESD Protection Exceeds JESD 22 200-V Machine Model (A115) 2000-V Human Body Model (A114) Exceeds 1000-V Charged Device Model (C101) 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) Pin Assignments 1 3 2 4 5 6 7 DSA Q0 DSB Q3 8 Q7 Q5 Q6 MR Vcc ( Top View ) SO-14 / TSSOP-14 / PDIP-14 GND 13 14 12 11 10 9 Q2 CP Q4 Q1 Applications General Purpose Logic Wide Array of Products Such as: PCs, Networking, Notebooks, Netbooks Computer Peripherals, Hard Drives, CD/DVD ROMs TVs, DVDs, DVRs, Set-Top Boxes Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony- free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. Device ordering information is on page 7 |
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