门电路7408

Revised February 2000

DM7408

Quad 2-Input AND Gates

General Description

This device contains four independent gates each of whichperforms the logic AND function.

Ordering Code:

Order NumberDM7408N

Package Number

N14A

Package Description

14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Connection DiagramFunction Table

Y = ABInputsALLHH

H = HIGH Logic LevelL = LOW Logic Level

Output

BLHLH

YLLLH

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DM7408Absolute Maximum Ratings(Note 1)

Supply VoltageInput Voltage

Operating Free Air Temperature RangeStorage Temperature Range

7V5.5V

0°C to +70°C−65°C to +150°C

Note 1: The “Absolute Maximum Ratings” are those values beyond whichthe safety of the device cannot be guaranteed. The device should not beoperated at these limits. The parametric values defined in the ElectricalCharacteristics tables are not guaranteed at the absolute maximum ratings.The “Recommended Operating Conditions” table will define the conditionsfor actual device operation.

Recommended Operating Conditions

SymbolVCCVIHVILIOHIOLTA

Parameter

Supply Voltage

HIGH Level Input VoltageLOW Level Input VoltageHIGH Level Output CurrentLOW Level Output CurrentFree Air Operating Temperature

0Min4.752

0.8−0.81670

Nom5

Max5.25

UnitsVVVmAmA°C

Electrical Characteristics

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

Parameter

Input Clamp VoltageHIGH Level Output VoltageOutput Voltage

Input Current @ Max Input VoltageHIGH Level Input CurrentLOW Level Input CurrentShort Circuit Output CurrentSupply Current with Outputs HIGHSupply Current with Outputs LOW

Conditions

VCC = Min, II = −12 mAVCC = Min, IOH = MaxVIL = MaxVIH = Min

VCC = Max, VI = 5.5VVCC = Max, VI = 2.4VVCC = Max, VI = 0.4VVCC = Max (Note 3)VCC = MaxVCC = Max

−18

1120

2.4

3.40.2

0.4140−1.6−552133

Min

Typ(Note 2)

Max−1.5

UnitsVVVmAµAmAmAmAmA

LOW Level VCC = Min, IOL = Max

Note 2: All typicals are at VCC = 5V, TA = 25°C.

Note 3: Not more than one output should be shorted at a time.

Switching Characteristics

at VCC = 5V and TA = 25°CSymboltPLHtPHL

Parameter

Propagation Delay TimeLOW-to-HIGH Level OutputPropagation Delay TimeHIGH-to-LOW Level Output

CL = 15 pFRL = 400Ω

Conditions

Min

Max2719

Unitsnsns

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DM7408 Quad 2-Input AND GatesPhysical Dimensions inches (millimeters) unless otherwise noted

14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Package Number N14A

Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied andFairchild reserves the right at any time without notice to change said circuitry and specifications.LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORTDEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILDSEMICONDUCTOR CORPORATION. As used herein:1.Life support devices or systems are devices or systemswhich, (a) are intended for surgical implant into thebody, or (b) support or sustain life, and (c) whose failureto perform when properly used in accordance withinstructions for use provided in the labeling, can be rea-sonably expected to result in a significant injury to theuser.

3

2.A critical component in any component of a life supportdevice or system whose failure to perform can be rea-sonably expected to cause the failure of the life supportdevice or system, or to affect its safety or effectiveness.

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