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SN74HC595B

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8-Bit Shift Registers With 3-State Output

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Data sheet

SN74HC595B

ACTIVE
Data sheet Order now

Product details

Configuration Serial-in, Parallel-out Bits (#) 8 Technology family HC Supply voltage (min) (V) 2 Supply voltage (max) (V) 6 Input type Standard CMOS Output type 3-State Clock frequency (MHz) 24 IOL (max) (mA) 7.8 IOH (max) (mA) -7.8 Supply current (max) (µA) 160 Features Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode Operating temperature range (°C) -55 to 125 Rating Catalog
Configuration Serial-in, Parallel-out Bits (#) 8 Technology family HC Supply voltage (min) (V) 2 Supply voltage (max) (V) 6 Input type Standard CMOS Output type 3-State Clock frequency (MHz) 24 IOL (max) (mA) 7.8 IOH (max) (mA) -7.8 Supply current (max) (µA) 160 Features Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode Operating temperature range (°C) -55 to 125 Rating Catalog
X1QFN (RWN) 16 6.25 mm² 2.5 x 2.5
  • 8-Bit Serial-In, Parallel-Out Shift Registers
  • Available in Ultra Small Logic QFN package(0.5 mm
    max height)
  • Over-Voltage Tolerant on Inputs Independent of Vcc
  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current 3-State Outputs Can Drive Up to 15
    LSTTL Loads
  • Low Power Consumption: 80-µA (Maximum) ICC
  • tpd = 13 ns (Typical)
  • ±6-mA Output Drive at 5 V
  • Low Input Current: 1 µA (Maximum)
  • Shift Register Has Direct Clear
  • -55oC to 125oC Operating Temperature
  • 8-Bit Serial-In, Parallel-Out Shift Registers
  • Available in Ultra Small Logic QFN package(0.5 mm
    max height)
  • Over-Voltage Tolerant on Inputs Independent of Vcc
  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current 3-State Outputs Can Drive Up to 15
    LSTTL Loads
  • Low Power Consumption: 80-µA (Maximum) ICC
  • tpd = 13 ns (Typical)
  • ±6-mA Output Drive at 5 V
  • Low Input Current: 1 µA (Maximum)
  • Shift Register Has Direct Clear
  • -55oC to 125oC Operating Temperature

The SN74HC595B devices contain an 8-bit, serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. The storage register has parallel 3-state outputs. Separate clocks are provided for both the shift register and storage register. The shift register has a direct overriding clear (SRCLR) input, serial (SER) input, and serial outputs for cascading. When the output-enable (OE) input is high, the all outputs are in the high-impedance state except QH’.

The SN74HC595B devices contain an 8-bit, serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. The storage register has parallel 3-state outputs. Separate clocks are provided for both the shift register and storage register. The shift register has a direct overriding clear (SRCLR) input, serial (SER) input, and serial outputs for cascading. When the output-enable (OE) input is high, the all outputs are in the high-impedance state except QH’.
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Technical documentation

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Type Title Date
* Data sheet SN74HC595B 8-Bit Shift Registers With 3-State Output Registers datasheet PDF | HTML 15 Feb 2016
Application note Implications of Slow or Floating CMOS Inputs (Rev. E) 26 Jul 2021
Application note Increase the Number of Outputs on a Microcontroller PDF | HTML 27 Oct 2020
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Technical article The next-generation QFN: Do you have what it takes to use it? PDF | HTML 14 Sep 2016
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
User guide Signal Switch Data Book (Rev. A) 14 Nov 2003
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
Application note CMOS Power Consumption and CPD Calculation (Rev. B) 01 Jun 1997
Application note Designing With Logic (Rev. C) 01 Jun 1997
Application note Input and Output Characteristics of Digital Integrated Circuits 01 Oct 1996
Application note Live Insertion 01 Oct 1996
Application note SN54/74HCT CMOS Logic Family Applications and Restrictions 01 May 1996
Application note Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc 01 Apr 1996

Design & development

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Simulation model

SN74HC595B IBIS Model

SCLM118.ZIP (77 KB) - IBIS Model
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Reference designs

TIDA-01233 — Ultra-Small, Flexible LED Expansion Reference Design

This document focuses on two reference designs using the SN74HC595B 8-bit Shift Register with 3-State Output Registers and the SN74LVC244A Octal Buffer with 3-State Outputs, each used to expand three general purpose outputs on a microcontroller to eight or more general purpose outputs. Both (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
X1QFN (RWN) 16 Ultra Librarian
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