HD74LV393A中文资料

HD74LV393A

Dual 4-bit Binary Counters

ADE-205-276 (Z)

1st Edition

April 1999 Description

The HD74LV393A contain two 4-bit ripple carry binary counters, which can be cascaded to create a single divide-by-256 counter.

The HD74LV393A is incremented on the high to low transition (negative edge) of the clock input, and each has an independent clear input. When clear is set high all four bits of each counter are set to a low level. This enables count trucation and allows the implementation of divide-by-N counter configurations. Low-voltage and high-speed operation is suitable for the battery-powered products (e.g., notebook computers), and the low-power consumption extends the battery life.

Features

? V CC = 2.0 V to 5.5 V operation

? All inputs V IH (Max.) = 5.5 V (@V CC = 0 V to 5.5 V)

? All outputs V O (Max.) = 5.5 V (@V CC = 0 V)

? Typical V OL ground bounce < 0.8 V (@V CC = 3.3 V, Ta = 25°C)

? Typical V OH undershoot > 2.3 V (@V CC = 3.3 V, Ta = 25°C)

? Output current ±6 mA (@V CC = 3.0 V to 3.6 V), ±12 mA (@V CC = 4.5 V to 5.5 V)

HD74LV393A

Function Table

Inputs

CLK CLR Output

X H L

H L No change L L No change ↑L No change ↓L Count up Note:H:High level

L:Low level

X:Immaterial

↑:Low to high transition

↓:High to low transition

Pin Arrangement

2

HD74LV393A

3

Absolute Maximum Ratings

Item

Symbol Ratings Unit Conditions

Supply voltage range V CC –0.5 to 7.0V Input voltage range*1V I –0.5 to 7.0V Output voltage range*1, 2V O –0.5 to V CC + 0.5V

Output: H or L –0.5 to 7.0V CC : OFF Input clamp current I IK –20mA V I < 0

Output clamp current I OK ±50mA V O < 0 or V O > V CC Continuous output current I O

±25mA V O = 0 to V CC Continuous current through V CC or GND

I CC or I GND ±70mA Maximum power dissipation at Ta = 25°C (in still air)*3P T

785mW

SOP 500

TSSOP

Storage temperature

Tstg

–65 to 150

°C Notes:The absolute maximum ratings are values which must not individually be exceeded, and furthermore,

no two of which may be realized at the same time.

1.The input and output voltage ratings may be exceeded if the input and output clamp-current

ratings are observed.

2.This value is limited to 5.5 V maximum.

3.The maximum package power dissipation was calculated using a junction temperature of 150°C.

HD74LV393A

4

Recommended Operating Conditions

Item

Symbol Min Max Unit Conditions

Supply voltage range V CC 2.0 5.5V Input voltage range V I 0 5.5V Output voltage range V O 0V CC V H or L Output current

I OH

—–50μA V CC = 2.0 V —–2mA

V CC = 2.3 to 2.7 V —–6V CC = 3.0 to 3.6 V —

–12V CC = 4.5 to 5.5 V I OL

—50μA V CC = 2.0 V —2mA V CC = 2.3 to 2.7 V —6V CC = 3.0 to 3.6 V —

12V CC = 4.5 to 5.5 V Input transition rise or fall rate

?t /?v

0200ns/V V CC = 2.3 to 2.7 V 0100V CC = 3.0 to 3.6 V 0

20V CC = 4.5 to 5.5 V Operating free-air temperature

Ta

–40

85

°C Note:Unused or floating inputs must be held high or low.

Logic Diagram

HD74LV393A Timing Diagram

5

HD74LV393A

6

DC Electrical Characteristics

? Ta = –40 to 85°C

Item Symbol V CC (V)*Min Typ Max Unit Test Conditions

Input voltage

V IH

2.0 1.5——V

2.3 to 2.7V CC × 0.7——

3.0 to 3.6V CC × 0.7——

4.5 to

5.5

V CC × 0.7——V IL

2.0——0.52.3 to 2.7——V CC × 0.3

3.0 to 3.6——V CC × 0.3

4.5 to

5.5

——V CC × 0.3Output voltage

V OH

Min to Max V CC – 0.1——V

I OL = –50 μA 2.3 2.0——I OL = –2 mA 3.0 2.48——I OL = –6 mA 4.5

3.8——I OL = –12 mA V OL

Min to Max ——0.1V I OL = 50 μA 2.3——0.4I OL = 2 mA 3.0——0.44I OL = 6 mA 4.5

——0.55I OL = 12 mA Input current I IN 0 to 5.5——±1μA V IN = 5.5 V or GND Quiescent supply current I CC 5.5——20μA V IN = V CC or GND, I O = 0Output leakage current I OFF 0——5μA V I , or V O = 0 V to 5.5 V Input

capacitance

C IN

3.3

—

1.7

—

pF V I = V CC or GND

Note:For conditions shown as Min or Max, use the appropriate values under recommended operating

conditions.

HD74LV393A

7

Switching Characteristics

? V CC = 2.5 ± 0.2 V

Ta = 25°C

Ta = –40 to 85°C Item Symbol Min Typ Max Min Max Unit Test Conditions FROM (Input)

TO

(Output)

Maximum clock

frequency

fmax

50

90

—

40

—

MHz

C L = 15 pF

30

60—25—C L = 50 pF Propa-gation delay time

t PLH/./t PHL

—

11.8

17.7

1.0

20.5

ns

C L = 15 pF

CLK

Q A

—15.121.3 1.024.5C L = 50 pF —13.420.3 1.023.5C L = 15 pF Q B

—16.723.9 1.027.5C L = 50 pF —14.922.5 1.026.0C L = 15 pF Q C —18.226.1 1.030.0C L = 50 pF —16.224.2 1.028.0C L = 15 pF Q D —

19.527.8 1.032.0C L = 50 pF t PHL

—10.814.8 1.017.0C L = 15 pF CLR

Q n —

14.217.4 1.020.0C L = 50 pF

Setup time t su 6.0—— 6.0—ns CLR L before CLK ↓Pulse width

t w

5.0—— 5.0—ns

CLR H 5.0

—

—

5.0

—

CLK H or L

HD74LV393A

8

Switching Characteristics (cont)

? V CC = 3.3 ± 0.3 V

Ta = 25°C

Ta = –40 to 85°C Item Symbol Min Typ Max Min Max Unit Test Conditions FROM (Input)

TO

(Output)

Maximum clock

frequency

fmax

75

120

—

65

—

MHz

C L = 15 pF

45

65—35—C L = 50 pF Propa-gation delay time

t PLH/./t PHL

—

8.6

13.2

1.0

15.5

ns

C L = 15 pF

CLK

Q A

—11.116.7 1.019.0C L = 50 pF —10.215.8 1.018.5C L = 15 pF Q B

—12.719.3 1.022.0C L = 50 pF —11.718.0 1.021.0C L = 15 pF Q C —14.221.5 1.024.5C L = 50 pF —13.019.7 1.023.0C L = 15 pF Q D —

15.523.2 1.026.5C L = 50 pF t PHL

—7.912.3 1.014.5C L = 15 pF CLR

Q n —

10.415.8 1.018.0C L = 50 pF

Setup time t su 5.0—— 5.0—ns CLR L before CLK ↓Pulse width

t w

5.0—— 5.0—ns

CLR H 5.0

—

—

5.0

—

CLK H or L

HD74LV393A

9

Switching Characteristics (cont)

? V CC = 5.0 ± 0.5 V

Ta = 25°C

Ta = –40 to 85°C Item Symbol Min Typ Max Min Max Unit Test Conditions FROM (Input)

TO

(Output)

Maximum clock

frequency

fmax

125

170

—

105

—

MHz

C L = 15 pF

85

115—75—C L = 50 pF Propa-gation delay time

t PLH/./t PHL

—

5.8

8.5

1.0

10.0

ns

C L = 15 pF

CLK

Q A

—7.310.5 1.012.0C L = 50 pF — 6.89.8 1.011.5C L = 15 pF Q B

—8.311.8 1.013.5C L = 50 pF —7.711.2 1.013.0C L = 15 pF Q C —9.213.2 1.015.0C L = 50 pF —8.512.5 1.014.5C L = 15 pF Q D —

10.014.5 1.016.5C L = 50 pF t PHL

— 5.48.1 1.09.5C L = 15 pF CLR

Q n —

6.910.1 1.011.5C L = 50 pF

Setup time t su 4.0—— 4.0—ns CLR L before CLK ↓Pulse width

t w

5.0—— 5.0—ns

CLR H 5.0

—

—

5.0

—

CLK H or L

HD74LV393A

10

Operating Characteristics

? C L = 50 pF

Ta = 25°C

Item Symbol V CC (V)Min Typ Max Unit Test Conditions Power dissipation capacitance

C PD

3.3

—

12.0

—

pF

f = 10 MHz

5.0—15.0—

Test Circuit

HD74LV393A

11

HD74LV393A Package Dimensions

12

HD74LV393A

13

HD74LV393A

14

Cautions

1.Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,

copyright, trademark, or other intellectual property rights for information contained in this document.Hitachi bears no responsibility for problems that may arise with third party’s rights, including

intellectual property rights, in connection with use of the information contained in this document.2.Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use.

3.Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,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 fail-safes, 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.

6.No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi.

7.Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor products.

Hitachi, Ltd.

Semiconductor & Integrated Circuits.

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Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.

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