SN74ALS158
SN74ALS158 is Quadruple 1-of-2 Data Selectors/Multiplexers manufactured by Texas Instruments.
- Part of the SN74AS157 comparator family.
- Part of the SN74AS157 comparator family.
description
These data selectors/multiplexers contain inverters and drivers to supply full data selection to the four output gates. A separate strobe (G) input is provided. A 4-bit word is selected from one of two sources and is routed to the four outputs. The ′ALS157A and SN74AS157 present true data. The ′ALS158 and SN74AS158 present inverted data to minimize propagation delay time.
The SN54ALS157A and SN54ALS158 are characterized for operation over the full military temperature range of
- 55°C to 125°C. The SN74ALS157A, SN74ALS158, SN74AS157, and SN74AS158 are characterized for operation from 0°C to 70°C.
SN54ALS157A, SN54ALS158 . . . J PACKAGE SN74ALS157A, SN74ALS158,
SN74AS157, SN74AS158 . . . D OR N PACKAGE (TOP VIEW)
A /B 1 1A 2 1B 3 1Y 4 2A 5 2B 6 2Y 7 GND 8
16 VCC 15 G 14 4A 13 4B 12 4Y 11 3A 10 3B 9 3Y
SN54ALS157A, SN54ALS158 . . . FK PACKAGE (TOP VIEW)
A/B
1A
1B
3 2 1 20 19
4A
1Y 5
17 4B
NC 6
16 NC
2A 7
15 4Y
2B 8
14 3A
9 10 11 12 13
3B
3Y
2Y
- No internal connection
FUNCTION TABLE
INPUTS
OUTPUT Y
A...
