Features: •Wide supply voltage range of 1.2 to 3.6 V
•In accordance with JEDEC standard no. 8-1A
•CMOS lower power consumption
•Direct interface with TTL levels
•5 Volt tolerant inputs, for interfacing with 5 Volt logicPinout
Specifications
| SYMBOL |
PARAMETER |
CONDITIONS |
RATING |
UNIT |
| VCC |
DC supply voltage |
|
0.5 to +6.5 |
V |
| IIK |
DC input diode current |
V1<0 |
50 |
mA |
| V1 |
DC input voltage |
Note 2 |
0.5 to +5.5 |
V |
| IOK |
DC output diode current |
VO>VCC or VO<O |
±50 |
mA |
| VO |
DC output voltage |
Note 2 |
0.5 to VCC +0.5 |
V |
| IO |
DC output diode current |
VO = 0 to VCC |
±50 |
mA |
| IGND, ICC |
DC VCC or GND current |
|
±100 |
mA |
| Tstg |
Storage temperature range |
|
65 to +150 |
°C |
| PTOT |
Power dissipation per package
plastic mini-pack (SO)
plastic shrink mini-pack (SSOP and TSSOP) |
above +70°C derate linearly with 8 mW/K
above +60°C derate linearly with 5.5 mW/K |
500
500 |
mW |
DescriptionThe 74LVC157A is a high-performance, low-power, Si-gate CMOS device, superior to most advanced CMOS compatible TTL families.
Inputs can be driven from either 3.3V or 5.0V devices. In 3-State operation, outputs can handle 5V. This feature allows the use of these devices as translators in a mixed 3.3V/5V environment.
The 74LVC157A is a quad 2-input multiplexer which select 4 bits of data from two sources under the control of a common data select input (S). The four outputs present the selected data in the true (non-inverted) form. The enable input (E</a>) is active LOW. When E</a> 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 of the 74LVC157A from which the data comes. It can also be used as function generator.
The 74LVC157A is useful for implementing highly irregular logic by generating any four of the 16 different functions of two variables with one variable common.
The 74LVC157A 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.
74LVC157A Data Sheet
