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KK74ACT251

Features: • TTL/NMOS Compatible Input Levels• Outputs Directly Interface to CMOS, NMOS, and TTL• Operating Voltage Range: 4.5 to 5.5 V• Low Input Current: 1.0 A; 0.1 A @ 25• Outputs Source/Sink 24 mAPinoutSpecifications Symbol Parameter Value Unit VCC DC S...

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SeekIC No. : 004385770 Detail

KK74ACT251: Features: • TTL/NMOS Compatible Input Levels• Outputs Directly Interface to CMOS, NMOS, and TTL• Operating Voltage Range: 4.5 to 5.5 V• Low Input Current: 1.0 A; 0.1 A @ 25&#...

KK74ACT251 Data Sheet

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Part Number:
KK74ACT251
Supply Ability:
5000

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  • 1~5000
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Upload time: 2024/11/23

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Product Details

Description



Features:

• TTL/NMOS Compatible Input Levels
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 4.5 to 5.5 V
• Low Input Current: 1.0 A; 0.1 A @ 25
• Outputs Source/Sink 24 mA


Pinout

Connection Diagram


Specifications

Symbol Parameter Value Unit
VCC DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V
VIN DC Input Voltage (Referenced to GND) −0.5 to VCC + 0.5 V
VOUT DC Output Voltage (Referenced to GND) −0.5 to VCC + 0.5 V
IIK DC Input Current, per Pin ±20 mA
IOUT DC output current ±50 mA
ICC DC Output Sink/Source Current, per Pin ±50 mA
PD Power Dissipation in Still Air, Plastic DIP+ 
                                        SOIC Package+		 750
500		 mW
Tstg Storage temperature −65 to 150
TL Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package) 260

*Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
+Derating - Plastic DIP: - 10 mW/ from 65° to 125
           SOIC Package: : - 7 mW/ from 65° to 125


Description

The KK74ACT251 is identical in pinout to the LS/ALS251, HC/HCT251. The KK74ACT251 may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs.

The KK74ACT251  selects one of the eight binary Data Inputs, as determined by the Address Inputs. The Output Enable pin must be at a low level for the selected data to appear at the outputs. If Output Enable is high, the Y and the Y outputs are in the high-impedance state. This 3-State feature allows the KK74ACT251 to be used in bus-oriented systems.




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