Texas Instruments CD74HCT574M96, CD74HCT574M, CD74HCT574E, CD74HCT374M96, CD74HCT374M Datasheet

Data sheet acquired from Harris Semiconductor
SCHS183

February 1998

CD74HC374, CD74HCT374,

CD74HC574, CD74HCT574

High Speed CMOS Logic Octal D-Type Flip-Flop,

Three-State Positive-Edge Triggered

[ /Title
(CD74
HC374
,
CD74
HCT37
4,
CD74
HC574
,
CD74
HCT57

Features

• Buffered Inputs

• Common Three-State Output Enable Control

• Three-State Outputs

• Bus Line Driving Capability

• Typical Propa gation Delay (Clock to Q) = 15ns at
= 5V, CL = 15pF, TA = 25oC

V

CC

• Fanout (Over Temperature Range)

- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

• Wide Operating Temperature Range . . . -55

• Balanced Propagation Delay and Transition Times

• Significant Power Reduction Compared to LSTTL

Logic ICs

• HC Types

- 2V to 6V Operation

- High Noise Immunity: N

= 30%, NIH = 30% of V

IL

at VCC = 5V

• HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,
V

= 0.8V (Max), VIH = 2V (Min)

IL

- CMOS Input Compatibility, I

≤ 1µA at VOL, V

l

o

C to 125oC

OH

Description

The Harris CD74HC374, CD74HCT374, CD74HC574 and
CD74HCT574 are Octal D-Type Flip-Flops with Three-State
Outputs and the capability to drive 15 LSTTL loads. The eight
edge-triggered flip-flops enter data into their registers on the
LOW to HIGH transition of cloc k (CP). The Output Enable
(

OE) controls the three-state outputs and is independent of
the register operation. When Output Enable (
outputs will be in the high impedance state. The 374 and 574
are identical in function and differ only in their pinout
arrangements.

Ordering Information

PART NUMBER TEMP. RANGE (oC) PACKAGE

CD74HC374E -55 to 125 20 Ld PDIP E20.3

CD74HCT374E -55 to 125 20 Ld PDIP E20.3

CD74HCT574E -55 to 125 20 Ld PDIP E20.3

CD74HC574E -55 to 125 20 Ld PDIP E20.3

CD74HC574M -55 to 125 20 Ld SOIC M20.3

CC

CD74HC374M -55 to 125 20 Ld SOIC M20.3

CD74HCT374M -55 to 125 20 Ld SOIC M20.3

CD74HCT574M -55 to 125 20 Ld SOIC M20.3
NOTES:

1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.

2. Wafer and die for this part number is available which meets all
electrical specifications. Please contact your local sales office or
Harris customer service for ordering information.

OE) is HIGH the

PKG.

NO.

Pinouts

CD74HC374, CD74HCT374

(PDIP, SOIC)

TOP VIEW

1

OE

Q0

2

D0

3

D1

4

Q1

5

Q2

6

D2

7
8

D3

9

Q3

GND

10

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright

© Harris Corporation 1998

V

20

CC

Q7

19

D7

18

D6

17

Q6

16

Q5

15

D5

14

D4

13
12

Q4
CP

11

1

OE

D0
D1
D2
D3
D4
D5
D6
D7

GND

1
2
3
4
5
6
7
8
9

10

CD74HCT574

(PDIP, SOIC)

TOP VIEW

V

20

CC

Q0

19

Q1

18

Q2

17

Q3

16

Q4

15

Q5

14

Q6

13
12

Q7
CP

11

File Number 1663.1

CD74HC374, CD74HCT374, CD74HC574, CD74HCT574

Functional Diagram

CP

OE

D

0

D

CP

D

1

Q

Q

0

D

2

D

CP

Q

Q

1

D

3

D

CP

Q

Q

2

D

4

D

CP

D

CP

Q

Q

Q

3

Q

TRUTH TABLE

INPUTS OUTPUT

OE CP Dn Qn

L ↑ HH
L↑LL
LLXQ0

HXXZ

NOTE:
H = High Level (Steady State)
L = Low Level (Steady State)
X = Don’t Care
↑ = Transition from Low to High Level
Q0= The level of Q before the indicated steady-state input conditions

were established

Z = High Impedance State

D

5

4

D

6

D

CP

Q

Q

5

D

7

D

CP

D

CP

Q

Q

Q

6

Q

7

2

CD74HC374, CD74HCT374, CD74HC574, CD74HCT574

Absolute Maximum Ratings Thermal Information

DC Supply Voltage, VCC. . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V

DC Input Diode Current, I

IK

For VI < -0.5V or VI > VCC + 0.5V. . . . . . . . . . . . . . . . . . . . . .±20mA

DC Output Diode Current, I

OK

For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±20mA

DC Drain Current, per Output, I

O

For -0.5V < VO < VCC + 0.5V. . . . . . . . . . . . . . . . . . . . . . . . . .±35mA

DC Output Source or Sink Current per Output Pin, I

O

For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA

DC VCC or Ground Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . .±50mA

Operating Conditions

Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC

Supply Voltage Range, V

HC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to 6V

HCT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V

DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to V

Input Rise and Fall Time

2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000ns (Max)

4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500ns (Max)

6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400ns (Max)

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTE:

3. θJA is measured with the component mounted on an evaluation PC board in free air.

CC

Thermal Resistance (Typical, Note 3) θJA (oC/W)

PDIP Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150oC

Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC

(SOIC - Lead Tips Only)

CC

DC Electrical Specifications

PARAMETER SYMBOL

HC TYPES

High Level Input
Voltage

Low Level Input
Voltage

High Level Output
Voltage
CMOS Loads

High Level Output
Voltage
TTL Loads

Low Level Output
Voltage
CMOS Loads

Low Level Output
Voltage
TTL Loads

Input Leakage
Current

V

IH

V

IL

V

OH

V

OL

I

I

TEST

CONDITIONS

(V) IO(mA) MIN TYP MAX MIN MAX MIN MAX

I

V

CC

(V)

o

C -40oC TO 85oC -55oCTO125oC

25

UNITSV

- - 2 1.5 - - 1.5 - 1.5 - V

4.5 3.15 - - 3.15 - 3.15 - V
6 4.2 - - 4.2 - 4.2 - V

- - 2 - - 0.5 - 0.5 - 0.5 V

4.5 - - 1.35 - 1.35 - 1.35 V
6 - - 1.8 - 1.8 - 1.8 V

VIHor VIL-0.02 2 1.9 - - 1.9 - 1.9 - V

-0.02 4.5 4.4 - - 4.4 - 4.4 - V

-0.02 6 5.9 - - 5.9 - 5.9 - V

- - ---- - - - V

-6 4.5 3.98 - - 3.84 - 3.7 - V

-7.8 6 5.48 - - 5.34 - 5.2 - V

VIHor VIL0.02 2 - - 0.1 - 0.1 - 0.1 V

0.02 4.5 - - 0.1 - 0.1 - 0.1 V

0.02 6 - - 0.1 - 0.1 - 0.1 V

- - ---- - - - V
6 4.5 - - 0.26 - 0.33 - 0.4 V

7.8 6 - - 0.26 - 0.33 - 0.4 V

VCC or

-6--±0.1 - ±1-±1µA

GND

3