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© Semiconductor Components Industries, LLC, 2012
October, 2012 − Rev. 8
1 Publication Order Number:
MC74LCX540/D
MC74LCX540
Low-Voltage CMOS
Octal Buffer
Flow Through Pinout
With 5 V−Tolerant Inputs and Outputs
(3−State, Inverting)
The MC74LCX540 is a high performance, inverting octal buffer
operating from a 2.3 to 3.6 V supply. This device is similar in function
to the MC74LCX240, while providing flow through architecture.
High impedance TTL compatible inputs significantly reduce current
loading to input drivers while TTL compatible outputs offer improved
switching noise performance. A V
I
specification of 5.5 V allows
MC74LCX540 inputs to be safely driven from 5 V devices. The
MC74LCX540 is suitable for memory address driving and all TTL
level bus oriented transceiver applications.
Current drive capability is 24 mA at the outputs. The Output Enable
(OE1
, OE2) inputs, when HIGH, disables the outputs by placing them
in a HIGH Z condition.
Features
• Designed for 2.3 to 3.6 V V
CC
Operation
• 5 V Tolerant − Interface Capability With 5 V TTL Logic
• Supports Live Insertion and Withdrawal
• I
OFF
Specification Guarantees High Impedance When V
CC
= 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
MARKING
DIAGRAMS
See detailed ordering and shipping information in the package
dimensions section on page 3 of this data sheet.
ORDERING INFORMATION
http://onsemi.com
1
20
A = Assembly Location
L, WL = Wafer Lot
Y, YY = Year
W, WW = Work Week
G or G =Pb−Free Package
SOIC−20 WB
DW SUFFIX
CASE 751D
LCX540
AWLYYWWG
LCX
540
ALYW G
G
TSSOP−20
DT SUFFIX
CASE 948E
1
1
20
1
20
20
(Note: Microdot may be in either location)
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