Symbol

Parameter

Units

Min

Max

Propagation Delay

70

ns

60

Propagation Delay

55

ns

50

Propagation Delay

70

ns

65

Propagation Delay

40

ns

60

Functional Description

The 93L09 dual 4-input multiplexers are able to select two

bits of either HIGH or LOW data or control from up to four

sources in one package The 93L09 is the logical imple-

mentation of two-pole four-position switch with the position

of the switch being set by the logic levels supplied to the

two select inputs Both assertion and negation outputs are

provided for both multiplexers The logic equations for the

outputs are shown below

The 93L09 is frequently used to move data from a group of

registers to a common output bus The particular register

from which the data came would be determined by the state

of the select inputs A less obvious application is as a func-

tion generator The 93L09 can generate two functions of

three variables This is useful for implementing random gat-

ing functions

Truth Table

Select

Inputs

Outputs

Inputs

(a or b)

(a or b)

S0

S1

I0

I1

I2

I3

Z

Z

L

L

L

XXX

L

H

L

L

H

XXX

H

L

H

L

XLX

X

L

H

H

L

XHX

X

H

L

L

H

X

XLX

L

H

L

H

X

XHX

H

L

H

H

XXX

L

L

H

H

H

XXX

H

H

L

Logic Diagram

TLF9602 – 3

3