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Datasheet 74LS257 Equivalent ( PDF ) |
| N.º | Número de pieza | Descripción | Fabricantes | |
| 6 | 74LS257 | LOW POWER SCHOTTKY SN74LS257B SN74LS258B Quad 2-Input Multiplexer with 3-State Outputs
The LSTTL / MSI SN74LS257B and the SN74LS258B are Quad 2-Input Multiplexers with 3-state outputs. Four bits of data from two sources can be selected using a Common Data Select input. The four outputs present the selected data in tru |
 ON Semiconductor |
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| 5 | 74LS257 | 3-STATE Quad 2-Data Selectors/Multiplexers DM74LS257B 3-STATE Quad 2-Data Selectors/Multiplexers
June 1989 Revised November 1999
DM74LS257B 3-STATE Quad 2-Data Selectors/Multiplexers
General Description
These Schottky-clamped high-performance multiplexers feature 3-STATE outputs that can interface directly with data lines of bus-organized |
 Fairchild Semiconductor |
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| 4 | 74LS257 | Quadruple 2-line-to-1-line Data Selectors/Multiplexers(with non inverted 3-state outputs) 19.20 20.00 Max 16 9 7.40 Max 6.30
Unit: mm
1 1.3
1.11 Max
8
0.51 Min
2.54 Min 5.06 Max
7.62
2.54 ± 0.25
0.48 ± 0.10
0.25 – 0.05 0° – 15°
Hitachi Code JEDEC EIAJ Weight (reference value)
+ 0.13
DP-16 Conforms Conforms 1.07 g
Unit: mm
10.06 10.5 Max 16 9
5.5
1
*0.22 ± 0.05 0.20 |
 Hitachi Semiconductor |
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| 3 | 74LS257 | TRI-STATE Quad 2-Data Selectors/Multiplexers 54LS257A DM54LS257B DM74LS257B 54LS258A DM54LS258B DM74LS258B TRI-STATE Quad 2-Data Selectors Multiplexers
June 1989
54LS257A DM54LS257B DM74LS257B 54LS258A DM54LS258B DM74LS258B TRI-STATE Quad 2-Data Selectors Multiplexers
General Description
These Schottky-clamped high-performance multiplexers f |
 National Semiconductor |
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