MC74LCX257DTG(2012) 查看數據表（PDF） - ON Semiconductor
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MC74LCX257DTG Datasheet PDF : 8 Pages
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MC74LCX257
Low-Voltage CMOS Quad
2-Input Multiplexer
With 5.0 V−Tolerant Inputs and Outputs
(3−State, Non−Inverting)
The MC74LCX257 is a high performance, quad 2−input
multiplexer with 3−state 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
(non−inverted) 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 − 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
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
16
1
http://onsemi.com
MARKING
DIAGRAMS
16
SOIC−16
D SUFFIX
CASE 751B
LCX257G
AWLYWW
1
16
16
1
TSSOP−16
DT SUFFIX
CASE 948F
LCX
257
ALYWG
G
1
A
WL, L
Y
WW, W
G or G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 3 of this data sheet.
© Semiconductor Components Industries, LLC, 2012
1
October, 2012 − Rev. 7
Publication Order Number:
MC74LCX257/D
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