Datasheet HD74AC4024 Datasheet (HIT)

HD74AC4024

7-State Binary Counter

Description

The HD74AC4024 is a 4-stage counter. This device is incremented on the falling edge (negative transition)
of the input clock, and all its output is reset to a low level by applying a logical high on its reset input.

Feature

• Outputs Source/Sink 24 mA

Pin Arrangement

Q

Q6

Q5

Q4

GND

1

2

7

3

4

5

6

7

(Top view)

14

13

12

11

10

9

8

Clock V

Reset

NC

Q

Q2

NC

Q3

NC

CC

1

HD74AC4024

Logic Symbol

C

R

7

Q

Q6

Q5

Q4 Q3

Q1

Q2

Pin Names

Clock Clock Input (Active Falling Edge)
Reset Master Reset Input
Q1 to Q

7

Outputs

Function Table

Clock Reset Outputs State

L L No change
L H All outputs are low
H L No change
H H All outputs are low

L No change
H All outputs are low
L Advance to next state
H All outputs are low

H : High voltage level
L : Low voltage level

: Low-to-High Clock Transition
: High-to-Low Clock Transition

2

Logic Diagram

HD74AC4024

Clock

Reset

CQ

R

CQ

Q R

Q1 Q2 Q3 Q4

Q R

CQ

Q R

CQ

Q

DC Characteristics (unless otherwise specified)

Item Symbol Max Unit Condition

Maximum quiescent supply current I

CC

80 µAV

= VCC or ground, VCC = 5.5 V,

IN

Ta = Worst case

Maximum quiescent supply current I

CC

8.0 µAV

= VCC or ground, VCC = 5.5 V,

IN

Ta = 25°C

AC Characteristics

Ta = +25°C
C

= 50 pF

L

Item Symbol V

Maximum clock f

max

(V)*1Min Typ Max Min Max Unit

CC

3.3 70 — — 60 — MHz
frequency 5.0 110 — — 95 —
Propagation delay t
Clock to Q

1

Propagation delay t
Clock to Q

1

Propagation delay t

PLH

PHL

PHL

3.3 1.0 9.5 12.5 1.0 13.5 ns

5.0 1.0 7.0 9.0 1.0 9.5

3.3 1.0 9.5 12.0 1.0 13.0 ns

5.0 1.0 6.5 9.0 1.0 10.0

3.3 1.0 10.5 12.5 1.0 13.5 ns
Reset to outputs 5.0 1.0 7.5 10.0 1.0 11.0

Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V

Voltage Range 5.0 is 5.0 V ± 0.5 V

Ta = –40°C to +85°C
CL = 50 pF

3

HD74AC4024

AC Operating Requirements

Ta = –40°C

Ta = +25°C
C

= 50 pF

L

Item Symbol V

Reset to Clock t

rec

(V)*1Typ Guaranteed Minimum Unit

CC

3.3 –2.5 0.0 0.0 ns

5.0 –1.5 0.0 0.0

Pulse width Clock t

w

3.3 3.0 4.0 4.5 ns

5.0 2.0 3.0 3.5

Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V

Voltage Range 5.0 is 5.0 V ± 0.5 V

Capacitance

Item Symbol Typ Unit Condition

Input capacitance C
Power dissipation capacitance C

IN

PD

4.5 pF VCC = 5.5 V
60 pF VCC = 5.0 V

to +85°C
CL = 50 pF

4

1

19.20

20.32 Max

1.30

Unit: mm

814

6.30

7.40 Max

7

2.54 ± 0.25

2.39 Max

0.48 ± 0.10

2.54 Min 5.06 Max

0.51 Min

Hitachi Code
JEDEC
EIAJ
Weight

7.62

+ 0.10

0.25

– 0.05

0° – 15°

(reference value)

DP-14
Conforms
Conforms

0.97 g

14

1.27

10.5 Max

1

10.06

1.42 Max

Unit: mm

8

5.5

7

+ 0.20

7.80

– 0.30

2.20 Max
*0.22 ± 0.05

1.15

0.20 ± 0.04
0° – 8°

0.70 ± 0.20

*0.42 ± 0.08

0.40 ± 0.06

*Dimension including the plating thickness

Base material dimension

0.12

0.10 ± 0.10

0.15

M

Hitachi Code
JEDEC
EIAJ

(reference value)

Weight

FP-14DA
—
Conforms

0.23 g

9.05 Max

14

Unit: mm

8.65

8

*Pd plating

1

0.635 Max

1.27

*0.40 ± 0.06

7

+ 0.11

0.25

3.95

– 0.04

0.14

0.15

1.75 Max

M

6.10

1.08

*0.20 ± 0.05

0.60

Hitachi Code
JEDEC
EIAJ
Weight

+ 0.10
– 0.30

0° – 8°

+ 0.67
– 0.20

(reference value)

FP-14DN
Conforms
Conforms

0.13 g

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contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.

4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as fail­safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
consequential damage due to operation of the Hitachi product.

5. This product is not designed to be radiation resistant.

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