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SN74AUC74
  • SN74AUC74

SN74AUC74

ACTIVE

Dual Positive-Edge-Triggered D-Type Flip-Flops with Clear and Preset

Texas Instruments SN74AUC74 Product Info

1 April 2026 5

Parameters

Number of channels

2

Technology family

AUC

Supply voltage (min) (V)

0.8

Supply voltage (max) (V)

2.7

Input type

Standard CMOS

Output type

Push-Pull

Clock frequency (max) (MHz)

350

IOL (max) (mA)

9

IOH (max) (mA)

-9

Supply current (max) (µA)

10

Features

Balanced outputs, Over-voltage tolerant inputs, Partial power down (Ioff), Ultra high speed (tpd <5ns)

Operating temperature range (°C)

-40 to 85

Rating

Catalog

Package

VQFN (RGY)-14-12.25 mm² 3.5 x 3.5

Features

  • Optimized for 1.8-V Operation and Is 3.6-V I/O Tolerant to Support Mixed-Mode Signal Operation
  • Ioff Supports Partial-Power-Down Mode Operation
  • Sub-1-V Operable
  • Max tpd of 1.8 ns at 1.8 V
  • Low Power Consumption, 10-µ Max ICC
  • ±8-mA Output Drive at 1.8 V
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

  • Optimized for 1.8-V Operation and Is 3.6-V I/O Tolerant to Support Mixed-Mode Signal Operation
  • Ioff Supports Partial-Power-Down Mode Operation
  • Sub-1-V Operable
  • Max tpd of 1.8 ns at 1.8 V
  • Low Power Consumption, 10-µ Max ICC
  • ±8-mA Output Drive at 1.8 V
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

Description

This dual positive-edge-triggered D-type flip-flop is operational at 0.8-V to 2.7-V VCC, but is designed specifically for 1.65-V to 1.95-V VCC operation.

A low level at the preset (PRE) or clear (CLR) inputs sets or resets the outputs, regardless of the levels of the other inputs. When PRE and CLR are inactive (high), data at the data (D) input meeting the setup time requirements is transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of the clock pulse. Following the hold-time interval, data at the D input can be changed without affecting the levels at the outputs. To better optimize the flip-flop for higher frequencies, the CLR input overrides the PRE input when they are both low.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

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