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74LV157

Features: • Optimized for low voltage applications: 1.0 to 3.6 V• Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V• Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V, Tamb = 25°C• Typical VOHV (output VOH undershoot) > 2 V at VCC = 3.3 V, Tamb = 2...

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SeekIC No. : 004251142 Detail

74LV157: Features: • Optimized for low voltage applications: 1.0 to 3.6 V• Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V• Typical VOLP (output ground bounce) < 0.8 V at VC...

74LV157 Data Sheet

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Part Number:
74LV157
Supply Ability:
5000

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  • 1~5000
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Product Details

Description



Features:

• Optimized for low voltage applications: 1.0 to 3.6 V
• Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V
• Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V, Tamb = 25°C
• Typical VOHV (output VOH undershoot) > 2 V at VCC = 3.3 V, Tamb = 25°C
• Output capability: standard
• ICC category: MSI


Pinout

Connection Diagram


Specifications

SYMBOL
 PARAMETER CONDITIONS
RATING
UNIT
VCC
 DC supply voltage
0.5 to +7.0
V
±IIK
 DC input diode current VI < 0.5 or VI > VCC + 0.5V
20
mA
±IOK
 DC output diode current VO < 0.5 or VO > VCC + 0.5V
50
mA
±IO
 DC output source or sink current
standard outputs		 0.5V < VO < VCC + 0.5V
25
mA
±IGND,
±ICC
 DC VCC or GND current for types with
standard outputs
50
mA
Tstg
 Storage temperature range
65 to +150
°C
PTOT
 Power dissipation per package
plastic DIL
plastic mini-pack (SO)
plastic shrink mini-pack (SSOP and TSSOP)		 for temperature range: 40 to +125°C
above +70°C derate linearly with 12mW/K
above +70°C derate linearly with 8 mW/K
above +60°C derate linearly with 5.5 mW/K
750
500
400
mW
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.


Description

The four outputs of the 74LV157 present the selected data in the true (non-inverted) form. The enable input (E) is active LOW. When E is HIGH, all of the outputs (1Y to 4Y) are forced LOW regardless of all other input conditions.
Moving the data from two groups of registers to four common output buses is a common use of the 74LV157. The state of the common data select input (S) determines the particular register from which the data comes. It can also be used as function generator.

The 74LV157 is useful for implementing highly irregular logic by generating any four of the 16 different functions of two variables with one variable common.

The 74LV157 is the logic implementation of a 4-pole, 2-position switch, where the position of the switch is determined by the logic levels applied to S.




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