74LCX540 Datasheet, PDF(1/12 Page) Fairchild Semiconductor – Low Voltage Octal Buffer/Line Driver with 5V Tolerant Inputs and Outputs

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74LCX540 Datasheet, PDF (1/12 Pages) Fairchild Semiconductor – Low Voltage Octal Buffer/Line Driver with 5V Tolerant Inputs and Outputs

March 1995

Revised March 2005

74LCX540

Low Voltage Octal Buffer/Line Driver

with 5V Tolerant Inputs and Outputs

General Description

The LCX540 is an octal buffer/line driver designed to be

employed as a memory and address driver, clock driver

and bus oriented transmitter/receiver.

This device is similar in function to the LCX240 while pro-

viding flow-through architecture (inputs on opposite side

from outputs). This pinout arrangement makes this device

especially useful as an output port for microprocessors,

allowing ease of layout and greater PC board density.

The LCX540 is designed for low voltage (2.5V or 3.3V) VCC

applications with capability of interfacing to a 5V signal

environment. The LCX540 is fabricated with an advanced

CMOS technology to achieve high speed operation while

maintaining CMOS low power dissipation.

Features

s 5V tolerant inputs and outputs

s 2.3Vâ3.6V VCC specifications provided

s 6.5 ns tPD max (VCC 3.3V), 10 PA ICC max

s Power down high impedance inputs and outputs

s Supports live insertion/withdrawal (Note 1)

s Implements patented noise/EMI reduction circuitry

s Latch-up performance exceeds JEDEC 78 conditions

s ESD performance:

Human body model ! 2000V

Machine model ! 200V

s Leadless Pb-Free DQFN package

Note 1: To ensure the high-impedance state during power up or down, OE

should be tied to VCC through a pull-up resistor: the minimum value or the

resistor is determined by the current-sourcing capability of the driver.

Ordering Code:

Order Number

Package

Number

Package Description

74LCX540WM

M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide

74LCX540SJ

M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

74LCX540BQX

(Preliminary)

(Note 2)

MLP020B Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC

MO-241, 2.5 x 4.5mm

74LCX540MSA

MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide

74LCX540MTC

MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

74LCX540MTC_NL MTC20 Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm

(Note 3)

Wide

Devices also available in Tape and Reel. Specify by appending the suffix letter âXâ to the ordering code.

Pb-Free package per JEDEC J-STD-020B.

Note 2: DQFN package available in Tape and Reel only.

Note 3: â_NLâ indicates Pb-Free package (per JEDEC J-STD-020B). Device available in Tape and Reel only.

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