CD74FCT844A datasheet(4/6 Pages) TI

Part #	CD74FCT844A

Description	BiCMOS FCT Interface Logic, 9-Bit Transparent Latches, Three-State

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8-4

Absolute Maximum Ratings

Thermal Information

DC Supply Voltage (VCC) . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 6V

DC Diode Current, IIK (For VI < -0.5V) . . . . . . . . . . . . . . . . . . -20mA

DC Output Diode Current, IOK (for VO < -0.5V) . . . . . . . . . . . -50mA

DC Output Sink Current per Output Pin, IO . . . . . . . . . . . . . . . 70mA

DC Output Source Current per Output Pin, IO . . . . . . . . . . . . -30mA

DC VCC Current (ICC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237mA

DC Ground Current (IGND). . . . . . . . . . . . . . . . . . . . . . . . . . . 453mA

Operating Conditions

Operating Temperature Range, TA . . . . . . . . . . . . . . . . .0

oC to 70oC

Supply Voltage Range, VCC . . . . . . . . . . . . . . . . . . . .4.75V to 5.25V

DC Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VCC

DC Output Voltage, VO. . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to ≤ VCC

Input Rise and Fall Slew Rate, dt/dv. . . . . . . . . . . . . . . . 0 to 10ns/V

Thermal Resistance (Typical, Note 2)

θJA (oC/W)

PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

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.

NOTE:

2.

θJA is measured with the component mounted on an evaluation PC board in free air.

Electrical Speciﬁcations Commercial Temperature Range 0oC to 70oC, VCC Max = 5.25V, VCC Min = 4.75V

PARAMETER

SYMBOL

TEST CONDITIONS

VCC (V)

AMBIENT TEMPERATURE (TA)

UNITS

25oC0oC TO 70oC

VI (V)

IO (mA)

MIN

MAX

MIN

MAX

High Level Input Voltage

VIH

4.75 to

5.25

2-2-

V

Low Level Input Voltage

VIL

4.75 to

5.25

-

0.8

-

0.8

V

High Level Output Voltage

VOH

VIH or VIL

-15

Min

2.4

-

2.4

-

V

Low Level Output Voltage

VOL

VIH or VIL

48

Min

-

0.55

-

0.55

V

High Level Input Current

IIH

VCC

Max

-

0.1

-

1

µA

Low Level Input Current

IIL

GND

Max

-

-0.1

-

-1

µA

Three-State Leakage Current

IOZH

VCC

Max

-

0.5

-

10

µA

IOZL

GND

Max

-

-0.5

-

-10

µA

Input Clamp Voltage

VIK

VCC or

GND

-18

Min

-

-1.2

-

-1.2

V

Short Circuit Output Current

(Note 3)

IOS

VO = 0

VCC or

GND

Max

-75

-

-75

-

mA

Quiescent Supply Current,

MSI

ICC

VCC or

GND

0

Max

-

8

-

80

µA

Additional Quiescent Supply

Current per Input Pin

TTL Inputs High, 1 Unit Load

∆ICC

3.4V

(Note 4)

Max

-

1.6

-

1.6

mA

NOTES:

3. Not more than one output should be shorted at one time. Test duration should not exceed 100ms.

4. Inputs that are not measured are at VCC or GND.

5. FCT Input Loading: All inputs are 1 unit load. Unit load is

∆ICC limit specified in Static Characteristics Chart, e.g., 1.6mA Max. @ 70oC.

CD74FCT843A, CD74FCT844A

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