CD54HC4538F datasheet(4/18 Pages) TI

4 / 18 page

Absolute Maximum Ratings

Thermal Information

DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V

DC Input Diode Current, IIK

For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA

DC Output Diode Current, IOK

For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±20mA

DC Output Source or Sink Current per Output Pin, IO

For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA

DC VCC or Ground Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . .±50mA

Operating Conditions

Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . -55

oC to 125oC

Supply Voltage Range, VCC (Note 3)

HC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to 6V

HCT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V

DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to VCC

Input Rise and Fall Times, tr, tf

Reset Input:

2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000ns (Max)

4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500ns (Max)

6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400ns (Max)

Trigger Inputs A or B:

2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unlimited (Max)

4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unlimited (Max)

6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unlimited (Max)

External Timing Resistor, RX (Note 4) . . . . . . . . . . . . . . . .5kΩ (Min)

External Timing Capacitor, CX (Note 4) . . . . . . . . . . . . . . . . . 0 (Min)

Package Thermal Impedance,

θJA (see Note 5):

E (PDIP) Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67oC/W

M (SOIC) Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73oC/W

NS (SOP) Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64oC/W

PW (TSSOP) Package . . . . . . . . . . . . . . . . . . . . . . . . . 108oC/W

Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150oC

Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC

(SOIC - Lead Tips Only)

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation

of the device at these or any other conditions above those indicated in the operational sections of this speciﬁcation is not implied.

NOTES:

3. Unless otherwise specified, all voltages are referenced to ground.

4. The maximum allowable values of RX and CX are a function of leakage of capacitor CX, the leakage of the ’HC4538, and leakage due to

board layout and surface resistance. Values of RX and CX should be chosen so that the maximum current into pin 2 or pin 14 is 30mA.

Susceptibility to externally induced noise signals may occur for RX > 1MΩ.

5. The package thermal impedance is calculated in accordance with JESD 51-7.

DC Electrical Speciﬁcations

PARAMETER

SYMBOL

TEST

CONDITIONS

VCC

(V)

25oC

-40oC TO 85oC -55oC TO 125oC

UNITS

VI (V)

IO (mA)

MIN

TYP

MAX

MIN

MAX

MIN

MAX

HC TYPES

High Level Input

Voltage

VIH

1.5

4.5

3.15

4.2

Low Level Input

Voltage

VIL

0.5

4.5

1.35

1.8

High Level Output

Voltage

CMOS Loads

VOH

VIH or VIL

-0.02

1.9

-0.02

4.5

4.4

-0.02

5.9

High Level Output

Voltage

TTL Loads

---

-4

4.5

3.98

3.84

3.7

-5.2

5.48

5.34

5.2

CD54HC4538, CD74HC4538, CD54HCT4538, CD74HCT4538

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