M54HC139

M74HC139

February 1993

DUAL 2 TO 4 DECODER/DEMULTIPLEXER

B1R

(Plastic Package)

ORDER CODES :

M54HC139F1R

M74HC139M1R

M74HC139B1R

M74HC139C1R

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

PIN CONNECTIONS (top view)

NC =

No Internal

Connection

INPUT AND OUTPUT EQUIVALENT CIRCUIT

DESCRIPTION

.

HIGH SPEED

.

LOW POWER DISSIPATION

.

HIGH NOISE IMMUNITY

.

OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS

.

SYMMETRICAL OUTPUT IMPEDANCE

.

BALANCED PROPAGATION DELAYS

.

WIDE OPERATING VOLTAGE RANGE

.

PIN AND FUNCTION COMPATIBLE

WITH 54/74LS139

The M54/74HC139 is a high speed CMOS DUAL

TWO LINE TO FOUR LINE DECODER/DEMULTI-

PLEXER fabricated in silicon gate C

ogy. It has the same high speed performance of

LSTTL combined with true CMOS low power con-

sumption. The active low enable input can be used

for gating or as a data input for demultiplexing ap-

plications. While the enable input is held high, all

four outputs are high independently of the other in-

puts. All inputs are equipped with protection circuits

against static discharge and transient excess volt-

age.

1/9