HD74HC668RPEL datasheet(6/11 Pages) RENESAS

Part #	HD74HC668RPEL

Description	Synchronous UP/Down Decade Counter, Synchronous Up/Down 4-bit binary Counter

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Manufacturer	RENESAS [Renesas Technology Corp]

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6 / 11 page

HD74HC668, HD74HC669

Rev.2.00 Mar 30, 2006 page 6 of 10

Recommended Operating Conditions

Item

Symbol

Ratings

Unit

Conditions

Supply voltage

VCC

2 to 6

V

Input / Output voltage

VIN, VOUT

0 to VCC

V

Operating temperature

Ta

–40 to 85

°C

0 to 1000

VCC = 2.0 V

0 to 500

VCC = 4.5 V

Input rise / fall time

*1

tr, tf

0 to 400

ns

VCC = 6.0 V

Note:

1. This item guarantees maximum limit when one input switches.

Waveform: Refer to test circuit of switching characteristics.

Electrical Characteristics

Ta = 25

°C

Ta = –40 to+85

°C

Item

Symbol VCC (V)

Min

Typ

Max

Min

Max

Unit

Test Conditions

2.0

1.5

—

1.5

—

4.5

3.15

—

3.15

—

VIH

6.0

4.2

—

4.2

—

V

2.0

—

0.5

—

0.5

4.5

—

1.35

—

1.35

Input voltage

VIL

6.0

—

1.8

—

1.8

V

2.0

1.9

2.0

—

1.9

—

4.5

4.4

4.5

—

4.4

—

6.0

5.9

6.0

—

5.9

—

IOH = –20

µA

4.5

4.18

—

4.13

—

IOH = –4 mA

VOH

6.0

5.68

—

5.63

—

V

Vin = VIH or VIL

IOH = –5.2 mA

2.0

—

0.0

0.1

—

0.1

4.5

—

0.0

0.1

—

0.1

6.0

—

0.0

0.1

—

0.1

IOL = 20

µA

4.5

—

0.26

—

0.33

IOL = 4 mA

Output voltage

VOL

6.0

—

0.26

—

0.33

V

Vin = VIH or VIL

IOL = 5.2 mA

Input current

Iin

6.0

—

±0.1

—

±1.0

µA Vin = VCC or GND

Quiescent supply

current

ICC

6.0

—

4.0

—

40

µA Vin = VCC or GND, Iout = 0 µA

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