MC74LCX540 查看數據表（PDF） - Motorola => Freescale
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MC74LCX540
Motorola => Freescale
MC74LCX540 Datasheet PDF : 8 Pages
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Low-Voltage CMOS
Octal Buffer
Flow Through Pinout
With 5V-Tolerant Inputs and Outputs
(3-State, Inverting)
MC74LCX540
The MC74LCX540 is a high performance, inverting octal buffer
operating from a 2.7 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 2.7 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
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
SD SUFFIX
PLASTIC SSOP
CASE 940C–03
Pinout: 20–Lead (Top View)
VCC OE2 O0 O1 O2 O3 O4 O5 O6 O7
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
OE1 D0 D1 D2 D3 D4 D5 D6 D7 GND
20
1
DT SUFFIX
PLASTIC TSSOP
CASE 948E–02
PIN NAMES
Pins
Function
OEn
Dn
On
Output Enable Inputs
Data Inputs
3–State Outputs
8/95
© Motorola, Inc. 1996
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