© 2003 Fairchild Semiconductor Corporation DS011608 www.fairchildsemi.com
May 1993
Revised October 2003
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Low
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2-I
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Mult
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74LVX157
Low Voltage Quad 2-Input Multiplexer
General Description
The LVX157 is a high-speed quad 2-input multiplexer. Four
bits of data from two sources can be selected using the
common Select and Enable inputs. The four outputs
present the selected data in the true (noninverted) form.
The LVX157 can also be used as a function generator.
Features
a73 Input voltage level translation from 5V to 3V
a73 Ideal for low power/low noise 3.3V applications
a73 Guaranteed simultaneous switching noise level and
dynamic threshold performance

Ordering Code:
Devices are also available in Tape and Reel. Specify by appending letter suffix “X” to the ordering code.
Logic Symbols
IEEE/IEC
Connection Diagram
Pin Descriptions
Order Number Package Number Package Description
74LVX157M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
74LVX157SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LVX157MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pin Names Description
I
0a
–I
0d
Source 0 Data Inputs
I
1a
–I
1d
Source 1 Data Inputs
E Enable Input
S Select Input
Z
a
–Z
d
Outputs