Nexperia

74HC574; 74HCT574

Octal D-type flip-flop; positive edge-trigger; 3-state

6. Functional description

Table 3. Function table

H = HIGH voltage level; h = HIGH voltage level one setup time prior to the HIGH-to-LOW CP transition;

L = LOW voltage level; l = LOW voltage level one setup time prior to the HIGH-to-LOW CP transition;

Z = high-impedance OFF-state; ↑ = LOW-to-HIGH clock transition.

Input

Output

Operating mode

OE

CP

Dn

Internal

flip-flop

Qn

L

↑

l

L

L

Load and read register

L

↑

h

H

H

H

↑

l

L

Z

Load register and disable output

H

↑

h

H

Z

7. Limiting values

Table 4. Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).

Symbol

Parameter

Conditions

Min

Max

Unit

VCC

supply voltage

-0.5

+7

V

IIK

input clamping current

VI < -0.5 V or VI > VCC + 0.5 V

-

±20

mA

IOK

output clamping current

VO < -0.5 V or VO > VCC + 0.5 V

-

±20

mA

IO

output current

VO = -0.5 V to (VCC + 0.5 V)

-

±35

mA

ICC

supply current

-

+70

mA

IGND

ground current

-

-70

mA

Tstg

storage temperature

-65

+150 °C

Ptot

total power dissipation

[1]

-

500

mW

[1] For SOT163-1 (SO20) package: Ptot derates linearly with 12.3 mW/K above 109 °C.

For SOT360-1 (TSSOP20) package: Ptot derates linearly with 10.0 mW/K above 100 °C.

For SOT764-1 (DHVQFN20) package: Ptot derates linearly with 12.9 mW/K above 111 °C.

8. Recommended operating conditions

Table 5. Recommended operating conditions

Voltages are referenced to GND (ground = 0 V)

74HC574

74HCT574

Symbol Parameter

Conditions

Min

Typ

Max

Min

Typ

Max

Unit

VCC

supply voltage

2.0

5.0

6.0

4.5

5.0

5.5

V

VI

input voltage

0

-

VCC

0

-

VCC V

VO

output voltage

0

-

VCC

0

-

VCC V

Tamb

ambient temperature

-40

+25

+125

-40

+25

+125 °C

VCC = 2.0 V

-

-

625

-

-

-

ns/V

VCC = 4.5 V

-

1.67

139

-

1.67

139 ns/V

Δt/ΔV

input transition rise and fall rate

VCC = 6.0 V

-

-

83

-

-

-

ns/V

74HC_HCT574

All information provided in this document is subject to legal disclaimers.

© Nexperia B.V. 2022. All rights reserved

Product data sheet

Rev. 9 — 20 October 2022

4 / 17