Datasheet M74HC374 Datasheet (ST)

M74HC374

OCTAL D-TYPE FLIP FLOP

WITH 3 STATE OUTPUT NON INVERTING

■ HIGH SPEED:

f

= 90MHz (TYP.) at VCC = 6V

MAX

■ LOW POWER DISSIPATION:

I

= 4µA(MAX.) at TA=25°C

CC

■ HIGH NOISE IMMUNITY:

V

= V

NIH

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

| = IOL = 6mA (MIN)

OH

■ BALANCED PROPAGATION DELAYS:

t

≅ t

PLH

■ WIDE OPERATING VOLTAGE RANGE:

V

(OPR) = 2V to 6V

CC

■ PIN AND FUNCTION COMPATIBLE WITH

= 28 % VCC (MIN.)

NIL

PHL

74 SERIES 374

DESCRIPTION

The M74HC374 is an high speed CMOS OCTAL
D-TYPE FLIP FLOP WITH 3-STATE OUTPUTS
NON INVERTING fabricated with sub-micron
silicon gate C

2

MOS technology.
This 8 bit D-TYPE FLIP FLOP is con trolled by a
clock input (CK) and an o utpu t enable input (OE
On the positive transition of the clock, the Q
outputs will be set to the logic state that were
setup at the D inputs.
While the OE

input is at low level, the eight outputs

will be in a norm al logic state (high or low logic

ORDER CODES

PACKAGE TUBE T & R

DIP M74HC374B1R

SOP M74HC374M1R M74HC374RM13TR

TSSOP M74HC374TTR

level) and while OE

is high the outputs will be in

a high impedance state.
The output control does not affect the internal
operation of flip-flops; that is, the old data can be
retained or the new data can be entered even

).

while the outputs are off.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.

TSSOPDIP SOP

PIN CONNECTION AND IEC LOGIC SYMBOLS

1/11July 2001

M74HC374

INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

1OE

2, 5, 6, 9, 12,

15, 16, 19

3, 4, 7, 8, 13,

14, 17, 18

11 CK Clock Input (LOW to

10 GND Ground (0V)
20 V

TRUTH TABLE

INPUTS OUTPUT

Q0 to Q7 3 State Outputs

D0 to D7 Data Inputs

CC

3 State Output Enable
Input (Active LOW)

HIGH, edge triggered)

Positive Supply Voltage

OE

HXXZ

L X NO CHANGE
LLL
LHH

X: Don’t Care
Z: High Impedance

LOGIC DIAGRAM

CK D Q

This log i c diagram has not be used to est i m at e propagation delays

2/11

M74HC374

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V

V

I

I

OK

I

I

or I

CC

P

T

T

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW at 65

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

V

V

T

t

r

Supply Voltage

CC

DC Input Voltage -0.5 to VCC + 0.5

I

DC Output Voltage -0.5 to VCC + 0.5

O

DC Input Diode Current

IK

DC Output Diode Current
DC Output Current

O

DC VCC or Ground Current

GND

Power Dissipation

D

Storage Temperature

stg

Lead Temperature (10 sec)

L

°C; derate to 300mW by 10mW/°C from 65°C to 85°C

Supply Voltage

CC

Input Voltage 0 to V

I

Output Voltage 0 to V

O

Operating Temperature

op

Input Rise and Fall Time VCC = 2.0V

, t

f

V
V

CC
CC

= 4.5V
= 6.0V

-0.5 to +7 V

± 20 mA
± 20 mA
± 35 mA
± 70 mA

500(*) mW

-65 to +150 °C

300 °C

2 to 6 V

CC
CC

-55 to 125 °C
0 to 1000 ns

0 to 500 ns
0 to 400 ns

V
V

V
V

3/11

M74HC374

DC SPECIFICATIONS

Symbol Parameter

V

V

V

V

I

I

High Level Input

IH

Voltage

Low Level Input

IL

Voltage

High Level Output

OH

Voltage

Low Level Output

OL

Voltage

I

Input Leakage

I

Current
High Impedance

OZ

Output Leakage
Current

Quiescent Supply

CC

Current

Test Condition Value

V

(V)

CC

= 25°C

A

Min. Typ. Max. Min. Max. Min. Max.

-40 to 85°C -55 to 125°C

T

2.0 1.5 1.5 1.5

6.0 4.2 4.2 4.2

2.0 0.5 0.5 0.5

6.0 1.8 1.8 1.8

2.0

4.5

6.0

4.5

6.0

2.0

4.5

6.0

4.5

6.0

6.0

6.0

6.0

IO=-20 µA
I

=-20 µA

O

I

=-20 µA

O

I

=-6.0 mA

O

I

=-7.8 mA

O

IO=20 µA
I

=20 µA

O

I

=20 µA

O

I

=6.0 mA

O

I

=7.8 mA

O

= VCC or GND

V

I

= VIH or V

V

I

IL

VO = VCC or GND

= VCC or GND

V

I

1.9 2.0 1.9 1.9

4.4 4.5 4.4 4.4

5.9 6.0 5.9 5.9

4.18 4.31 4.13 4.10

5.68 5.8 5.63 5.60

0.0 0.1 0.1 0.1

0.0 0.1 0.1 0.1

0.0 0.1 0.1 0.1

0.17 0.26 0.33 0.40

0.18 0.26 0.33 0.40

± 0.1 ± 1 ± 1 µA

± 0.5 ± 5 ± 10 µA

44080µA

Unit

V4.5 3.15 3.15 3.15

V4.5 1.35 1.35 1.35

V

V

4/11

AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns)

Test Condition Value

T

Symbol Parameter

t

TLH tTHL

t

PLH tPHL

Output Transition
Time

Propagation Delay
Time

(CLOCK - Q)

t

PZL tPZH

High Impedance
Output Enable
Time

t

PLZ tPHZ

High Impedance
Output Disable
Time

f

MAX

t

W(L)

t

W(H)

Maximum Clock
Frequency

Minimum Pulse
Width (CLOCK)

Minimum Set-up

t

s

Time

Minimum Hold

t

h

Time

C

V

CC

(V)

L

(pF)

2.0
50

6.0 6101315

2.0
50

6.0 13 24 30 36

2.0

150

6.0 17 32 41 48

2.0

R

50

= 1 KΩ

L

6.0 11 23 29 35

2.0

150

L

= 1 KΩ

R

6.0 15 31 39 48

2.0

R

50

= 1 KΩ

L

6.0 13 21 26 32

2.0
50

6.0 37 90 30 25

2.0
50

6.0 6131619

2.0
50

6.0 4131619

2.0
50

6.0 0 0 0

= 25°C

A

Min. Typ. Max. Min. Max. Min. Max.

25 60 75 90

45 140 175 210

60 190 240 285

39 135 170 205

54 185 230 280

30 125 155 190

6.2 18 5 4.2

15 75 95 110

25 75 95 110

000

M74HC374

-40 to 85°C -55 to 125°C

Unit

ns4.5 7121518

ns4.5 15 28 35 42

ns4.5 20 38 48 57

ns4.5 13 27 34 41

ns4.5 18 37 46 56

ns4.5 14 25 31 38

MHz4.5 31 75 25 21

ns4.5 6151922

ns4.5 6151922

ns4.5 0 0 0

CAPACITIVE CHARACTERISTICS

Test Condition Value

= 25°C

Symbol Parameter

C

C

C

Input Capacitance

IN

Output

OUT

Capacitance
Power Dissipation

PD

Capacitance (note

V

CC

(V)

T

A

Min. Typ. Max. Min. Max. Min. Max.

5101010pF

10 pF

47 pF

1)

1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without

load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
Flop) and the C

when n pcs of F lip Flop opera te, can be gained by the following equation: C

PD

-40 to 85°C -55 to 125°C

= CPD x VCC x fIN + ICC/8 (per Flip

CC(opr)

PD(TOTAL)

= 30 + 17 x n (pF)

Unit

5/11

M74HC374

TEST CIRCUIT

TEST SWITCH

t

, t

PLH

PHL

, t

t

PZL

PLZ

t

, t

PZH

PHZ

CL = 50pF/150pF or equivalent (includes jig and probe capacitance)

= 1KΩ or equivalent

R

1

R

= Z

of pulse generator (typically 50Ω)

T

OUT

Open

V

CC

GND

WAVEFORM 1: CK TO Qn PROPAGATION DELAYS, CK FMAX, Dn TO CK SETUP AND HOLD
TIMES (f=1MHz; 50% duty cycle)

6/11

WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIMES (f=1MHz; 50% duty cycl e )

M74HC374

WAVEFORM 3: MINIMUM PULSE WIDTH (CK) (f=1MHz; 50% duty cycle)

7/11

M74HC374

Plastic DIP-20 (0.25) MECHANICAL DATA

mm. inch

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

a1 0.254 0.010

B 1.39 1.65 0.055 0.065
b 0.45 0.018

b1 0.25 0.010

D 25.4 1.000
E 8.5 0.335

e 2.54 0.100

e3 22.86 0.900

F 7.1 0.280

I 3.93 0.155

L 3.3 0.130

Z 1.34 0.053

8/11

P001J

SO-20 MECHANICAL DATA

M74HC374

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

A 2.65 0.104
a1 0.1 0.2 0.004 0.008
a2 2.45 0.096

b 0.35 0.49 0.014 0.019

b1 0.23 0.32 0.009 0.012

C 0.5 0.020
c1 45° (typ.)

D 12.60 13.00 0.496 0.512

E 10.00 10.65 0.393 0.419

e 1.27 0.050

e3 11.43 0.450

F 7.40 7.60 0.291 0.300

L 0.50 1.27 0.020 0.050

M 0.75 0.029

S8° (max.)

mm. inch

PO13L

9/11

M74HC374

TSSOP20 MECHANICAL DATA

mm. inch

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

A 1.2 0.047

A1 0.05 0.15 0.002 0.004 0.006

A2 0.8 1 1.05 0.031 0.039 0.041

b 0.19 0.30 0.007 0.012

c 0.09 0.20 0.004 0.0089

D 6.4 6.5 6.6 0.252 0.256 0.260

E 6.2 6.4 6.6 0.244 0.252 0.260

E1 4.3 4.4 4.48 0.169 0.173 0.176

e 0.65 BSC 0.0256 BSC

K0° 8°0° 8°

L 0.45 0.60 0.75 0.018 0.024 0.030

A2

A

A1

b

e

K

c

L

E

D

E1

PIN 1 IDENTIFICATION

10/11

1

0087225C

M74HC374

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11/11