Low-Voltage, CMOS Analog

Multiplexers/Switches

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9

X

H

Table 1. Truth Table/Switch Programming

X

X

All switches open

All switches open

All switches open

L

L

X–X0

X–X0,

Y–Y0

X–X0,

Y–Y0,

Z–Z0

L

L

L

H

X–X1

X–X1,

Y–Y1

X–X1,

Y–Y0,

Z–Z0

L

L

H

H

X–X3

X–X3,

Y–Y3

X–X1,

Y–Y1,

Z–Z0

H

L

X–X2

X–X2,

Y–Y2

X–X0,

Y–Y1,

Z–Z0

L

L

L

L

L

H

X–X5

X–X1,

Y–Y1

X–X1,

Y–Y0,

Z–Z1

L

L

X–X4

X–X0,

Y–Y0

X–X0,

Y–Y0,

Z–Z1

H

L

H

L

H

H

X–X7

X–X3,

Y–Y3

X–X1,

Y–Y1,

Z–Z1

H

L

X–X6

X–X2,

Y–Y2

X–X0,

Y–Y1,

Z–Z1

H

L

H

L

X = Don’t care

*

C not present on MAX4582.

Note: Input and output pins are identical and interchangeable. Either may be considered an input or output; signals pass equally

well in either direction.

ON SWITCHES

SELECT INPUTS

B

A

MAX4581

MAX4582

MAX4583

C*

ENABLE

INPUT

translators, and set the input logic limits. The logic-level

nals. This drive signal is the only connection between

the logic supplies and signals and the analog supplies.

The logic-level thresholds are TTL/CMOS compatible

about 3.1V (above the TTL-guaranteed high-level mini-

mum of 2.8V, but still compatible with CMOS outputs).

Bipolar Supplies

These devices operate with bipolar supplies between

symmetrical, but their sum cannot exceed the +13V

absolute maximum rating

Single Supply

These devices operate from a single supply between

the bipolar precautions must be observed. At room

temperature, they actually “work” with a single supply

near or below +1.7V, although as supply voltage

decreases, switch on-resistance and switching times

become very high.