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September 2004

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5V TOLERANT INPUTS

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HIGH SPEED:

s

POWER DOWN PROTECTION ON INPUTS

AND OUTPUTS

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SYMMETRICAL OUTPUT IMPEDANCE:

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PCI BUS LEVELS GUARANTEED AT 24 mA

s

BALANCED PROPAGATION DELAYS:

s

OPERATING VOLTAGE RANGE:

Retention)

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PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 139

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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 74LCX139 is a low voltage CMOS DUAL 2

TO

4

LINE

DECODER/DEMULTIPLEXER

fabricated

with

sub-micron silicon gate and

It is ideal for low power and high speed 3.3V

applications; it can be interfaced to 5V signal

environment for inputs.

The active low enable input can be used for gating

or as a data input for demultiplexing applications.

While the enable input is held high, all four outputs

are high independently of the other inputs.

It has same speed performance at 3.3V than 5V

AC/ACT family, combined with a lower power

consumption.

All

inputs

and

outputs

are

equipped

with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

74LCX139

LOW VOLTAGE CMOS

DUAL 2 TO 4 DECODER/DEMULTIPLEXER

Figure 1: Pin Connection And IEC Logic Symbols

Table 1: Order Codes

PACKAGE

T & R

SOP

74LCX139MTR

TSSOP

74LCX139TTR

TSSOP

SOP

Rev. 3