MFG:TEXAS Package Cooled:SOP
MFG: TEXAS
Package Cooled: SOP
Description: The 74ALS157 is a quad 2-input multiplexer which selects 4 bits of data from one of two sources under ...
The 74ALS157 is a quad 2-input multiplexer which selects 4 bits of data from one of two sources under the control of a common select input (S). The enable input (E) is active when Low. When E is High, all of the outputs (Yn) are forced Low regardless of all other input conditions.
Moving data from two registers to a common output bus is a typical use of the 74ALS157. The state of the select input determines the particular register from which data comes.
The device is the logic implementation of 4-pole, 2-position switch where the position of the switch is determined by the logic levels supplied to the select input. The 74ALS158 is similar but has inverting outputs (Yn).
| SYMBOL | PARAMETER |
RATING |
UNIT |
| VCC | Supply voltage |
0.5 to +7.0 |
V |
| VIN | Input voltage |
0.5 to +7.0 |
V |
| IIN | Input current |
30 to +5 |
mA |
| VOUT | Voltage applied to output in High output state |
0.5 to VCC |
V |
| IOUT | Current applied to output in Low output state |
16 |
mA |
| Tamb | Operating free-air temperature range |
0 to +70 |
|
| Tstg | Storage temperature range |
65 to +150 |
74ABH16244ADGG
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The 74ALS157 is a quad 2-input multiplexer which selects 4 bits of data from one of two sources under the control of a common select input (S). The enable input (E) is active when Low. When E is High, all of the outputs (Yn) are forced Low regardless of all ...
The 74ALS153 has two identical 4input multiplexer with 3State outputs which selects two bits of data from four sources by using common select inputs (S0, S1). The two 4input multiplexer circuits have individual activeLow enables (Ea, Eb) which can be used to...
The 74ALS151 is a logic implementation of a single 8-position switch with the switch position controlled by the state of three select (S0, S1, S2) inputs. True (Y) and complementary (Y) outputs are both provided.The enable (E) is active-Low. When E is High, ...
The 74ALS139 is a dual 1-of-4 decoder/demultiplexer. This device has two independent decoders, each accepting two binary weighted inputs (A0n, A1n) and providing four mutually exclusive active-Low outputs (Q0nQ3n). Each decoder of the 74ALS139has an active-L...
The 74ALS138 decoder accepts three binary weighted inputs (A0, A1, A2) and when enabled, provides eight mutually exclusive, active-Low outputs (Q0 Q7). The device features three Enable inputs; two active-Low (E0, E1) and one active-High (E2). Every output w...
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