DM74LS123SJ datasheet(4/8 Pages) FAIRCHILD

Il numero della parte	DM74LS123SJ

Spiegazioni elettronici	Dual Retriggerable One-Shot with Clear and Complementary Outputs

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Produttore elettronici	FAIRCHILD [Fairchild Semiconductor]

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Absolute Maximum Ratings(Note 1)

Note 1: The “Absolute Maximum Ratings” are those values beyond which

the safety of the device cannot be guaranteed. The device should not be

operated at these limits. The parametric values defined in the Electrical

Characteristics tables are not guaranteed at the absolute maximum ratings.

The “Recommended Operating Conditions” table will define the conditions

for actual device operation.

Recommended Operating Conditions

Note 2: TA = 25°C and VCC = 5V.

Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted)

Note 3: All typicals are at VCC = 5V, TA = 25°C.

Note 4: Not more than one output should be shorted at a time, and the duration should not exceed one second.

Note 5: Quiescent ICC is measured (after clearing) with 2.4V applied to all clear and A inputs, B inputs grounded, all outputs OPEN, CEXT = 0.02 µF,

and REXT = 25 kΩ.

Note 6: ICC is measured in the triggered state with 2.4V applied to all clear and B inputs, A inputs grounded, all outputs OPEN, CEXT = 0.02 µF,

and REXT = 25 kΩ.

Note 7: With all outputs OPEN and 4.5V applied to all data and clear inputs, ICC is measured after a momentary ground, then 4.5V is applied to the clock.

Supply Voltage

7V

Input Voltage

7V

Operating Free Air Temperature Range

0

°C to +70°C

Storage Temperature

−65°C to +150°C

Symbol

Parameter

Min

Nom

Max

Units

VCC

Supply Voltage

4.75

5

5.25

V

VIH

HIGH Level Input Voltage

2

V

VIL

LOW Level Input Voltage

0.8

V

IOH

HIGH Level Output Current

−0.4

mA

IOL

LOW Level Output Current

8

mA

tW

Pulse Width

A or B HIGH

40

(Note 2)

A or B LOW

40

ns

Clear LOW

40

REXT

External Timing Resistor

5

260

k

Ω

CEXT

External Timing Capacitance

No Restriction

µF

CWIRE

Wiring Capacitance at REXT/CEXT Terminal

50

pF

TA

Free Air Operating Temperature

0

70

°C

Symbol

Parameter

Conditions

Min

Typ

Max

Units

(Note 3)

VI

Input Clamp Voltage

VCC = Min, II = −18 mA

−1.5

V

VOH

HIGH Level

VCC = Min, IOH = Max

2.7

3.4

V

Output Voltage

VIL = Max, VIH = Min

VOL

LOW Level

VCC = Min, IOL = Max

0.35

0.5

Output Voltage

VIL = Max, VIH = Min

V

IOL = 4 mA, VCC = Min

0.25

0.4

II

Input Current @ Max Input Voltage

VCC = Max, VI = 7V

0.1

mA

IIH

HIGH Level Input Current

VCC = Max, VI = 2.7V

20

µA

IIL

LOW Level Input Current

VCC = Max, VI = 0.4V

−0.4

mA

IOS

Short Circuit Output Current

VCC = Max (Note 4)

−20

−100

mA

ICC

Supply Current

VCC = Max (Note 5)(Note 6)(Note 7)

12

20

mA

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