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SN74HCT574

ACTIVE

Octal edge-triggered D-type flip-flops with 3-state outputs 

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Data sheet

SN74HCT574

ACTIVE
Data sheet Order now

Product details

Number of channels 8 Technology family HCT Input type TTL-Compatible CMOS Output type 3-State Clock frequency (max) (MHz) 28 IOL (max) (mA) 6 IOH (max) (mA) -6 Supply current (max) (µA) 80 Features Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode Operating temperature range (°C) -40 to 125 Rating Catalog
Number of channels 8 Technology family HCT Input type TTL-Compatible CMOS Output type 3-State Clock frequency (max) (MHz) 28 IOL (max) (mA) 6 IOH (max) (mA) -6 Supply current (max) (µA) 80 Features Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode Operating temperature range (°C) -40 to 125 Rating Catalog
SOIC (DW) 20 131.84 mm² (12.8 mm × 10.3 mm) TSSOP (PW) 20 41.6 mm² (6.5 mm × 6.4 mm) SOP (NS) 20 98.28 mm² (12.6 mm × 7.8 mm) SSOP (DB) 20 56.16 mm² (7.2 mm × 7.8 mm) PDIP (N) 20 228.702 mm² (24.33 mm × 9.4 mm) VSSOP (DGS) 20 24.99 mm² (5.1 mm × 4.9 mm)
  • Operating voltage range of 4.5V to 5.5V
  • High-current 3-state noninverting outputs drive bus lines directly or up to 15 LSTTL loads
  • Low power consumption, 80µA max ICC
  • Typical tpd = 22ns
  • ±6mA output drive at 5V
  • Low input current of 1µA max
  • Inputs are TTL-voltage compatible
  • Bus-structured pinout
  • Operating voltage range of 4.5V to 5.5V
  • High-current 3-state noninverting outputs drive bus lines directly or up to 15 LSTTL loads
  • Low power consumption, 80µA max ICC
  • Typical tpd = 22ns
  • ±6mA output drive at 5V
  • Low input current of 1µA max
  • Inputs are TTL-voltage compatible
  • Bus-structured pinout

These octal edge-triggered D-type flip-flops feature 3-state outputs designed specifically for bus driving. The ’HCT574 devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

These octal edge-triggered D-type flip-flops feature 3-state outputs designed specifically for bus driving. The ’HCT574 devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
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SN74ACT574 ACTIVE Octal D-Type Edge-Triggered Flip-Flops with 3-State Outputs Voltage range 4.5V to 5.5V, average propagation delay 8ns, average drive strength 24mA
SN74AHCT574 ACTIVE Octal Edge-Triggered D-Type Flip-Flops With 3-State Outputs Voltage range 4.5V to 5.5V, average propagation delay 9ns, average drive strength 8mA

Technical documentation

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Top documentation Type Title Format options Date
* Data sheet SNx4HCT574 Octal Edge-Triggered D-Type Flip-Flips With 3-State Outputs datasheet (Rev. H) PDF | HTML Aug 22, 2024
Application note Power-Up Behavior of Clocked Devices (Rev. B) PDF | HTML Dec 15, 2022

Design & development

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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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Package Pins CAD symbols, footprints & 3D models
SOIC (DW) 20 Ultra Librarian
TSSOP (PW) 20 Ultra Librarian
SOP (NS) 20 Ultra Librarian
SSOP (DB) 20 Ultra Librarian
PDIP (N) 20 Ultra Librarian
VSSOP (DGS) 20 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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