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IN74HCT157A

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 APinoutSpecifications Symbol Parameter Value Unit VCC DC Supply Voltage (Referenced to GN...

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IN74HCT157A: 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 APinoutSpecific...

IN74HCT157A Data Sheet

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Part Number:
IN74HCT157A
Supply Ability:
5000

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  • 1~5000
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  • 15 Days
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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


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)

-1.5 to VCC +1.5
V
VOUT
DC Output Voltage (Referenced to GND)
-0.5 to VCC +0.5
V
IIN
DC Input Current, per Pin
±20
mA
IOUT
DC Output Current, per Pin
±25
mA
ICC
DC Supply Current, VCC and GND Pins
±50
mA
PD
Power Dissipation in Still Air, Plastic DIP+
SOIC Package+
750
500
mW
Tstg
Storage Temperature
-65 to +150
°C
TL
Lead Temperature, 1 mm from Case for 10
Seconds
(Plastic DIP or SOIC Package)
260
°C
*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/°C  from 65°  to  125°C
SOIC Package: : - 7 mW/°C from 65° to 125°C


Description

The IN74HCT157A is identical in pinout to the LS/ALS157. This device may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs.

This IN74HCT157A routes 2 nibbles (A or B) to a single port (Y) as determined by the Select input. The data is presented at the outputs in noninvertered form. A high level on the Output Enable input sets all four Y outputs to a low level.




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