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SN74HC594

ACTIVE

8-Bit Shift Registers With Output Registers

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Data sheet

SN74HC594

ACTIVE
Data sheet Order now

Product details

Configuration Serial-in, Parallel-out Bits (#) 8 Technology family HC Input type Standard CMOS Output type Push-Pull Clock frequency (MHz) 24 IOL (max) (mA) 7.8 IOH (max) (mA) -7.8 Supply current (max) (µA) 80 Features Balanced outputs, High speed (tpd 10-50ns), Output register, Positive input clamp diode Operating temperature range (°C) -40 to 125 Rating Catalog
Configuration Serial-in, Parallel-out Bits (#) 8 Technology family HC Input type Standard CMOS Output type Push-Pull Clock frequency (MHz) 24 IOL (max) (mA) 7.8 IOH (max) (mA) -7.8 Supply current (max) (µA) 80 Features Balanced outputs, High speed (tpd 10-50ns), Output register, Positive input clamp diode Operating temperature range (°C) -40 to 125 Rating Catalog
SOIC (DW) 16 106.09 mm² (10.3 mm × 10.3 mm) PDIP (N) 16 181.42 mm² (19.3 mm × 9.4 mm) SOIC (D) 16 59.4 mm² (9.9 mm × 6 mm)
  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current Outputs Can Drive up to
    15 LSTTL Loads
  • Low Power Consumption, 80-µA Maximum ICC
  • Typical tpd = 15 ns
  • ±6-mA Output Drive at 5 V
  • Low Input Current of 1 µA Maximum
  • 8-Bit Serial-In, Parallel-Out Shift Registers With
    Storage
  • Independent Direct Overriding Clears on Shift and
    Storage Registers
  • Independent Clocks for Both Shift and
    Storage Registers
  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current Outputs Can Drive up to
    15 LSTTL Loads
  • Low Power Consumption, 80-µA Maximum ICC
  • Typical tpd = 15 ns
  • ±6-mA Output Drive at 5 V
  • Low Input Current of 1 µA Maximum
  • 8-Bit Serial-In, Parallel-Out Shift Registers With
    Storage
  • Independent Direct Overriding Clears on Shift and
    Storage Registers
  • Independent Clocks for Both Shift and
    Storage Registers

The SNx4HC594 devices contain an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. Separate clocks and direct overriding clear (RCLR, SRCLR) inputs are provided on both the shift and storage registers. A serial (QH’) output is provided for cascading purposes.

Both the shift register (SRCLK) and storage register (RCLK) clocks are positive edge triggered. If both clocks are connected together, the shift register always is one count pulse ahead of the storage register.

The parallel (QA – QH) outputs have high-current capability. QH’ is a standard output.

The SNx4HC594 devices contain an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. Separate clocks and direct overriding clear (RCLR, SRCLR) inputs are provided on both the shift and storage registers. A serial (QH’) output is provided for cascading purposes.

Both the shift register (SRCLK) and storage register (RCLK) clocks are positive edge triggered. If both clocks are connected together, the shift register always is one count pulse ahead of the storage register.

The parallel (QA – QH) outputs have high-current capability. QH’ is a standard output.
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Technical documentation

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* Data sheet SNx4HC594 8-Bit Shift Registers With Output Registers datasheet (Rev. G) PDF | HTML Mar 30, 2015
Application brief Using Linear Interpolation to Estimate Specification Values PDF | HTML Apr 13, 2026
Application note Power-Up Behavior of Clocked Devices (Rev. B) PDF | HTML Dec 15, 2022

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Evaluation board

14-24-LOGIC-EVM — Logic product generic evaluation module for 14-pin to 24-pin D, DB, DGV, DW, DYY, NS and PW packages

The 14-24-LOGIC-EVM evaluation module (EVM) is designed to support any logic device that is in a 14-pin to 24-pin D, DW, DB, NS, PW, DYY or DGV package,

User guide: PDF | HTML
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SOIC (DW) 16 Ultra Librarian
PDIP (N) 16 Ultra Librarian
SOIC (D) 16 Ultra Librarian
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