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MC74LCX257_05 Datasheet, PDF (1/8 Pages) ON Semiconductor – Low-Voltage CMOS Quad 2-Input Multiplexer With 5.0 V−Tolerant Inputs and Outputs (3−State, Non−Inverting) | |||
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MC74LCX257
LowâVoltage CMOS Quad
2âInput Multiplexer
With 5.0 VâTolerant Inputs and Outputs
(3âState, NonâInverting)
The MC74LCX257 is a high performance, quad 2âinput
multiplexer with 3âstate outputs operating from a 2.3 to 3.6 V supply.
High impedance TTL compatible inputs significantly reduce current
loading to input drivers while TTL compatible outputs offer improved
switching noise performance. A VI specification of 5.5 V allows
MC74LCX257 inputs to be safely driven from 5.0 V devices.
Four bits of data from two sources can be selected using the Select
input. The four outputs present the selected data in the true
(nonâinverted) form. The outputs may be switched to a high
impedance state by placing a logic HIGH on the Output Enable (OE)
input. Current drive capability is 24 mA at the outputs.
Features
⢠Designed for 2.3 to 3.6 V VCC Operation
⢠5.0 V Tolerant â Interface Capability with 5.0 V TTL Logic
⢠Supports Live Insertion and Withdrawal
⢠IOFF Specification Guarantees High Impedance When VCC = 0 V
⢠LVTTL Compatible
⢠LVCMOS Compatible
⢠24 mA Balanced Output Sink and Source Capability
⢠Near Zero Static Supply Current in All Three Logic States (10 mA)
Substantially Reduces System Power Requirements
⢠Latchup Performance Exceeds 500 mA
⢠ESD Performance: Human Body Model >2000 V
Machine Model >200 V
⢠PbâFree Packages are Available*
16
1
http://onsemi.com
MARKING
DIAGRAMS
16
SOICâ16
D SUFFIX
CASE 751B
LCX257
AWLYWW
1
16
16
1
TSSOPâ16
DT SUFFIX
CASE 948F
LCX
257
ALYW
1
16
16
1
SOEIAJâ16
M SUFFIX
CASE 966
74LCX257
ALYW
1
A
L, WL
Y
W, WW
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 3 of this data sheet.
*For additional information on our PbâFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2005
1
January, 2005 â Rev. 3
Publication Order Number:
MC74LCX257/D
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