CMOS Latched

8-/16-Channel Analog Multiplexers

ADG526A/ADG527A

Rev. C

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FEATURES

44 V supply maximum rating

Single- or dual-supply specifications

Wide supply ranges (10.8 V to 16.5 V)

Microprocessor compatible (100 ns WR pulse)

Extended plastic temperature range (−40°C to +85°C)

Low leakage (20 pA typical)

Low power dissipation (28 mW maximum)

Available in PDIP, CERDIP, SOIC, and PLCC packages

Superior alternative to DG526 and DG527

APPLICATIONS

Data acquisition systems

Communication systems

Automatic test equipment

Microprocessor controlled systems

GENERAL DESCRIPTION

The ADG526A and ADG527A are CMOS monolithic analog

multiplexers with 16 single channels and dual 8 channels,

respectively. On-chip latches facilitate microprocessor interfacing.

The ADG526A switches one of 16 inputs to a common output,

depending on the state of four binary addresses and an enable

input. The ADG527A switches one of eight differential inputs to

a common differential output, depending on the state of three

binary addresses and an enable input. Both devices have TTL

and 5 V CMOS logic-compatible digital inputs.

The ADG526A and ADG527A are designed on an enhanced

voltages. The devices can comfortably operate anywhere in the

10.8 V to 16.5 V single- or dual-supply range. These multiplexers

FUNCTIONAL BLOCK DIAGRAMS

A0 A1 A2 A3 EN RS

DECODER/

LATCHES

WR

D

S16

S1

ADG526A

Figure 1. ADG526A

A0 A1 A2 EN RS

DECODER/

LATCHES

WR

DA

S8A

S1A

DB

S8B

S1B

ADG527A

Figure 2. ADG527A

PRODUCT HIGHLIGHTS

1.

Single- or Dual-Supply Specifications with a Wide

Tolerance. The devices are specified in the 10.8 V to

16.5 V range for both single and dual supplies.

2.

Easily Interfaced. The ADG526A and ADG527A can be

easily interfaced with microprocessors. The WR signal

latches the state of the address control lines and the enable

line. The RS signal clears both the address and enable data

in the latches, resulting in no output (all switches off). RS

can be tied to the microprocessor reset pin.

3.

processing results in a high breakdown and an increased

4.

Break-Before-Make Switching. Switches are guaranteed

break-before-make so that input signals are protected

against momentary shorting.

5.

Low Leakage. Leakage currents in the range of 20 pA

make these multiplexers suitable for high precision circuits.