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IN74HCT138A

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 GND) ...

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SeekIC No. : 004375138 Detail

IN74HCT138A: 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...

IN74HCT138A Data Sheet

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Part Number:
IN74HCT138A
Supply Ability:
5000

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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 Sink/Source 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
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 IN74HCT138A is identical in pinout to the LS/ALS138. The IN74HCT138A may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs.

The IN74HCT138A decodes a three-bit Address to one-of-eight active-lot outputs. This device features three Chip Select inputs, two active-low and one active-high to facilitate the demultiplexing, cascading, and chip-selecting functions. The demultiplexing function is accomplished by using the Address inputs to select the desired device output; one of the Chip Selects is used as a data input while the other Chip Selects are held in their active states.




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