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MC74LCX540DT Datasheet PDF : 8 Pages
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Low-Voltage CMOS
Octal Buffer
Flow Through Pinout
With 5V–Tolerant Inputs and Outputs
(3–State, Inverting)
The MC74LCX540 is a high performance, inverting octal buffer
operating from a 2.3 to 3.6V 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 VI specification of 5.5V allows
MC74LCX540 inputs to be safely driven from 5V devices. The
MC74LCX540 is suitable for memory address driving and all TTL
level bus oriented transceiver applications.
Current drive capability is 24mA at the outputs. The Output Enable
(OE1, OE2) inputs, when HIGH, disables the outputs by placing them
in a HIGH Z condition.
• Designed for 2.3 to 3.6V VCC Operation
• 5V Tolerant — Interface Capability With 5V TTL Logic
• Supports Live Insertion and Withdrawal
• IOFF Specification Guarantees High Impedance When VCC = 0V
• LVTTL Compatible
• LVCMOS Compatible
• 24mA Balanced Output Sink and Source Capability
• Near Zero Static Supply Current in All Three Logic States (10µA)
Substantially Reduces System Power Requirements
• Latchup Performance Exceeds 500mA
• ESD Performance: Human Body Model >2000V; Machine Model >200V
MC74LCX540
LOW–VOLTAGE CMOS
OCTAL BUFFER
20
1
20
1
20
1
DW SUFFIX
PLASTIC SOIC
CASE 751D–04
M SUFFIX
PLASTIC SOIC EIAJ
CASE 967–01
DT SUFFIX
PLASTIC TSSOP
CASE 948E–02
PIN NAMES
Pins
Function
OEn
Dn
On
Output Enable Inputs
Data Inputs
3–State Outputs
© Semiconductor Components Industries, LLC, 2001
1
January, 2001 – Rev. 2
Publication Order Number:
MC74LCX540/D
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