7405 TTL 集电极开路六反相器

DM7405

Hex Inverters with Open-Collector Outputs

General Description

This device contains six independent gates each of whichperforms the logic INVERT function. The open-collectoroutputs require external pull-up resistors for proper logicaloperation.

Pull-Up Resistor Equations

Where: N1 (IOH) = total maximum output high current

for all outputs tied to pull-up resistor

N2 (IIH) = total maximum input high current for

all inputs tied to pull-up resistor

N3 (IIL) = total maximum input low current forall inputs tied to pull-up resistor

Ordering Code:

Order NumberDM7405N

Package Number

N14A

Package Description

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

Connection DiagramFunction Table

Y = A

InputALH

H = HIGH Logic LevelL = LOW Logic Level

OutputYHL

© 2000 Fairchild Semiconductor CorporationDS006495www.fairchildsemi.com

DM7405Absolute Maximum Ratings(Note 1)

Supply VoltageInput VoltageOutput Voltage

OperatingFreeAirTemperatureRangeStorage Temperature Range

7V5.5V7V

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

SymbolVCCVIHVILVOHIOLTA

Parameter

Supply Voltage

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

0Min4.752

0.85.51670

Nom5

Max5.25

UnitsVVVVmA°C

Electrical Characteristics

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

Parameter

Input Clamp VoltageHIGH Level Output CurrentOutput Voltage

Input Current @ Max Input VoltageHIGH Level Input CurrentLOW Level Input Current

Supply Current with Outputs HIGHSupply Current with Outputs LOW

Conditions

VCC = Min, II = −12 mAVCC = Min, VO = 5.5VVIL = MaxVIH = Min

VCC = Max, VI = 5.5VVCC = Max, VI = 2.4VVCC = Max, VI = 0.4VVCC = MaxVCC = Max

6180.2

Min

Typ(Note 2)

Max−1.52500.4140−1.61233

UnitsVµAVmAµAmAmAmA

LOW Level VCC = Min, IOL = Max

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

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 = 4 kΩ (tPLH)RL = 400Ω (tPHL)

Conditions

Min

Max5515

Unitsnsns

www.fairchildsemi.com2

DM7405 Hex Inverters with Open-Collector OutputsPhysical 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.

www.fairchildsemi.com

www.fairchildsemi.com