HD74LS192 데이터 시트보기 (PDF) - Renesas Electronics

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HD74LS192

Synchronous Up / Down Decade Counter (dual clock lines)

Renesas Electronics 

HD74LS192

Recommended Operating Conditions

Item

Supply voltage

Output current

Operating temperature

Clock frequency

Pulse width

Setup time (Clear)

Setup time

Hold time

Symbol

VCC

IOH

IOL

Topr

ƒclock

tw

tsu (CLR)

tsu

th

Min

4.75

—

—

–20

0

20

40

20

3

Typ

5.00

—

—

25

—

—

—

—

—

Max

5.25

–400

8

75

25

—

—

—

—

Unit

V

µA

mA

°C

MHz

ns

ns

ns

ns

Electrical Characteristics

(Ta = –20 to +75 °C)

Item

Symbol

min.

typ.* max.

Unit

Condition

Input voltage

Output voltage

Input current

Short-circuit output

current

VIH

2.0

—

—

V

VIL

—

—

0.8

V

VOH

2.7

—

—

V

VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V,

IOH = –400 µA

VOL

—

—

0.4

V

IOL = 4 mA VCC = 4.75 V, VIH = 2 V,

—

—

0.5

IOL = 8 mA VIL = 0.8 V

IIH

—

—

20

µA VCC = 5.25 V, VI = 2.7 V

IIL

—

—

–0.4

mA VCC = 5.25 V, VI = 0.4 V

II

—

—

0.1

mA VCC = 5.25 V, VI = 7 V

IOS

–20

—

–100

mA VCC = 5.25 V

Supply current**

ICC

—

19

34

mA VCC = 5.25 V

Input clamp voltage

VIK

—

—

–1.5

V

VCC = 4.75 V, IIN = –18 mA

Notes: * VCC = 5 V, Ta = 25°C

** ICC is measured with all outputs open, clear and load inputs grounded, and all other inputs at 4.5 V.

Switching Characteristics

(VCC = 5 V, Ta = 25°C)

Item

Symbol

Inputs

Outputs min. typ. max. Unit Condition

Maximum clock frequency

ƒmax

25

32

—

MHz

tPLH

Count-up

Carry

—

17

26

ns

tPHL

—

18

24

Propagation delay time

tPLH

Count-down Borrow

—

16

24

ns

tPHL

—

15

24

CL = 15 pF,

tPLH

Either Count

Q

tPHL

—

27

38

RL = 2 kΩ

ns

—

30

47

tPLH

Load

tPHL

—

24

40

Q

ns

—

25

40

tPHL

Clear

Q

—

23

35

ns

Rev.2.00, Feb.18.2005, page 4 of 10

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