74LCX240TTR datasheet(1/12 Pages) STMICROELECTRONICS

Il numero della parte	74LCX240TTR

Spiegazioni elettronici	LOW VOLTAGE CMOS OCTAL BUS BUFFER (3-STATE INV.) WITH 5V TOLERANT INPUTS AND OUTPUTS

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September 2004

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5V TOLERANT INPUTS AND OUTPUTS

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HIGH SPEED:

tPD = 6.5 ns (MAX.) at VCC = 3V

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POWER DOWN PROTECTION ON INPUTS

AND OUTPUTS

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SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 24mA (MIN) at VCC = 3V

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PCI BUS LEVELS GUARANTEED AT 24 mA

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BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

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OPERATING VOLTAGE RANGE:

VCC(OPR) = 2.0V to 3.6V (1.5V Data

Retention)

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PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 240

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LATCH-UP PERFORMANCE EXCEEDS

500mA (JESD 17)

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ESD PERFORMANCE:

HBM > 2000V (MIL STD 883 method 3015);

MM > 200V

DESCRIPTION

The 74LCX240 is a low voltage CMOS OCTAL

BUS BUFFER fabricated with sub-micron silicon

gate and double-layer metal wiring C2MOS

technology. It is ideal for low power and high

speed 3.3V applications; it can be interfaced to 5V

signal environment for both inputs and outputs.

It has same speed performance at 3.3V than 5V

AC/ACT family, combined with a lower power

consumption.

This device is designed to be used with 3 state

memory address drivers, etc.

All

inputs

and

outputs

are

equipped

with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

74LCX240

LOW VOLTAGE CMOS OCTAL BUS BUFFER (3-STATE INV.)

WITH 5V TOLERANT INPUTS AND OUTPUTS

Figure 1: Pin Connection And IEC Logic Symbols

Table 1: Order Codes

PACKAGE

T & R

SOP

74LCX240MTR

TSSOP

74LCX240TTR

TSSOP

SOP

Rev. 6

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