MC74HC4538AFEL datasheet(3/16 Pages) ONSEMI

Teilenummer	MC74HC4538AFEL

Bauteilbeschribung	Dual Precision Monostable Multivibrator (Retriggerable,Resettable)

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Hersteller	ONSEMI [ON Semiconductor]

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MC74HC4538A

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3

MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

VCC

DC Supply Voltage

*0.5 to )7.0

V

VI

DC Input Voltage

*0.5 v VI v VCC )0.5

V

VO

DC Output Voltage

(Note 1)

*0.5 v VO v VCC )0.5

V

IIK

DC Input Diode Current

A, B, Reset

CX, RX

$20

$30

mA

IOK

DC Output Diode Current

$25

mA

IO

DC Output Sink Current

$25

mA

ICC

DC Supply Current per Supply Pin

$100

mA

IGND

DC Ground Current per Ground Pin

$100

mA

TSTG

Storage Temperature Range

*65 to )150

_C

TL

Lead temperature, 1 mm from Case for 10 Seconds

260

_C

TJ

Junction temperature under Bias

)150

_C

qJA

Thermal resistance

PDIP

SOIC

TSSOP

78

112

148

_C/W

PD

Power Dissipation in Still Air at 85

_C

PDIP

SOIC

TSSOP

750

500

450

mW

MSL

Moisture Sensitivity

Level 1

FR

Flammability Rating

Oxygen Index: 30% − 35%

UL−94−VO (0.125 in)

VESD

ESD Withstand Voltage

Human Body Model (Note 2)

Machine Model (Note 3)

Charged Device Model (Note 4)

>2000

>100

>500

V

ILatchup

Latchup Performance

Above VCC and Below GND at 85_C (Note 5)

$300

mA

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit

values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,

damage may occur and reliability may be affected.

1. IO absolute maximum rating must be observed.

2. Tested to EIA/JESD22−A114−A.

3. Tested to EIA/JESD22−A115−A.

4. Tested to JESD22−C101−A.

5. Tested to EIA/JESD78.

6. For high frequency or heavy load considerations, see the ON Semiconductor High−Speed CMOS Data Book (DL129/D).

RECOMMENDED OPERATING CONDITIONS

Symbol

Parameter

Min

Max

Unit

VCC

DC Supply Voltage (Referenced to GND)

3.0*

6.0

V

Vin, Vout

DC Input Voltage, Output Voltage (Referenced to GND)

0

VCC

V

TA

Operating Temperature, All Package Types

–55

+125

_C

tr, tf

Input Rise and Fall Time

VCC = 2.0 V

(Figure 7)

VCC = 4.5 V

VCC = 6.0 V

A or B (Figure 5)

0

−

1000

500

400

No Limit

ns

Rx

External Timing Resistor

VCC < 4.5 V

VCC ≥ 4.5 V

1.0

2.0

†

k

W

Cx

External Timing Capacitor

0

†

mF

*The HC4538A will function at 2.0 V but for optimum pulse−width stability, VCC should be above 3.0 V.

†The maximum allowable values of Rx and Cx are a function of the leakage of capacitor Cx, the leakage of the HC4538A, and leakage due to board layout

and surface resistance. For most applications, Cx/Rx should be limited to a maximum value of 10 mF/1.0 MW. Values of Cx >1.0 mF may cause a

problem during power down (see Power Down Considerations). Susceptibility to externally induced noise signals may occur for Rx >1.0 MW.

7. Unused inputs may not be left open. All inputs must be tied to a high−logic voltage level or a low−logic input voltage level.

8. Information on typical parametric values can be found in the ON Semiconductor High−Speed CMOS Data Book (DL129/D).

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