MC74LCX240DT datasheet(1/8 Pages) MOTOROLA

Part #	MC74LCX240DT

Description	LOW-VOLTAGE CMOS OCTAL BUFFER

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Manufacturer	MOTOROLA [Motorola, Inc]

Direct Link	http://www.freescale.com

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MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

1

REV 3

9/95

Low-Voltage CMOS

Octal Buffer

With 5V-Tolerant Inputs and Outputs

(3-State, Inverting)

The MC74LCX240 is a high performance, inverting octal buffer

operating from a 2.7 to 3.6V 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 5.5V allows MC74LCX240 inputs to be safely driven from

5V devices. The MC74LCX240 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

(OE) input, 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

Pinout: 20–Lead (Top View)

19

20

18

17

16

15

14

2

1

34567

VCC

13

8

12

9

11

10

2OE

1O0

2D0

1O1

2D1

1O2

2D2

1O3

2D3

1OE

1D0

2O0

1D1

2O1

1D2

2O2

1D3

2O3

GND

PIN NAMES

Function

Output Enable Inputs

Data Inputs

3–State Outputs

Pins

nOE

1Dn, 2Dn

1On, 2On

MC74LCX240

LOW–VOLTAGE CMOS

OCTAL BUFFER

DW SUFFIX

PLASTIC SOIC

CASE 751D–04

DT SUFFIX

PLASTIC TSSOP

CASE 948E–02

20

1

20

1

M SUFFIX

PLASTIC SOIC EIAJ

CASE 967–01

20

1

SD SUFFIX

PLASTIC SSOP

CASE 940C–03

20

1

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