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74AHC595

Document number: DS35486 Rev. 3 - 2

1 of 10

www.diodes.com

June 2013

74AHC595

8-BIT SHIFT REGISTER WITH 8-BIT OUTPUT REGISTER

Description

The 74AHC595 is an advanced high speed CMOS device.

An eight bit shift register accepts data from the serial input (DS) on

each positive transition of the shift register clock (STCP). When

asserted low the reset function (MR

) sets all shift register values to

zero and is independent of all clocks.

Data from the input serial shift register is placed in the output register

with a rising pulse on the storages resister clock (SHCP). With the

output enable (OE

ሻ asserted low the 3-state outputs Q0-Q7 become

active and present.

All registers capture data on rising edge and change output on the

falling edge. If both clocks are connected together, the input shift

Features

 Wide Supply Voltage Range from 2.0 V to 5.5V

 Sinks or sources 8mA at V

= 4.5V

 CMOS low power consumption

 Schmitt Trigger Action at All Inputs

 Inputs Accept up to 5.5V

 ESD Protection Tested per JESD 22

 Exceeds 200-V Machine Model (A115-A)

 Exceeds 2000-V Human Body Model (A114-A)

 Exceeds 1000-V Charged Device Model (C101C)

 Latch-Up Exceeds 250mA per JESD 78, Class II

 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

 Halogen and Antimony Free. “Green” Device (Note 3)

Pin Assignments

Applications

 General Purpose Logic

 Serial to Parallel Data conversion

 Capture and hold data for extended periods of time

 Allow simple serial bit streams from a microcontroller to control as

many peripheral lines as needed

 Wide array of products such as:

 Computer peripherals

 Appliances

 Industrial control

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.

Click here for ordering information, located at the end of datasheet

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74AHC595 Document number: DS35486 Rev. 3 - 2 1 of 10 www.diodes.com June 2013© Diodes Incorporated 74AHC5958-BIT SHIFT REGISTER WITH 8-BIT OUTPUT

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74AHC595 Document number: DS35486 Rev. 3 - 2 10 of 10 www.diodes.com June 2013© Diodes Incorporated 74AHC595 IMPORTANT NOTICE DIODES INCORPORATE

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74AHC595 Document number: DS35486 Rev. 3 - 2 2 of 10 www.diodes.com June 2013© Diodes Incorporated 74AHC595 Pin Descriptions Pin Number Pin Name

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