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PS397

Precision, 16-Channel/Dual 8-Channel, 17V Analog Multiplexers

Pericom Semiconductor 

PS396/PS397

Precision, 16-Channel/Dual 8-Channel,

17V Analog Multiplexers 1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122

Absolute Maximum Ratings

Voltages Referenced to GND

V+ ....................................................................–0.3Vto+17V

V– ....................................................................+0.3Vto–17V

V+ to V– .......................................................... –0.3Vto+17V

Voltage into any terminal(1) ................... (V– –2V) to (V+ +2V)

........................................ or 30mA, whichever occurs first

Current into any terminal ........................................... ±30mA

Peak current into any terminal ................................... ±50mA

Continuous power Dissipation (TA = +70°C)

Plastic DIP (derate 14.29mW/°C above +70°C) ... 1143mW

Wide SO (derate 12.50mW/°C above +70°C) ..... 1000mW

SSOP (derate 9.52mW/°C above +70°C) ................ 762mW

Operating Temperature Ranges

PS39C_I ........................................................ 0°C to +70°C

PS39E_I ..................................................... –40°C to +85°C

Storage Temperature Range ....................... –65°C to +150°C

Lead Temperature (soldering, 10sec) ......................... +300°C

Note 1:

Signals on any terminal exceeding V+ or V– are clamped by

internal diodes. Limit forward current to maximum current rating.

CAUTION

Stresses beyond those listed under “Absolute Maximum

Ratings” may cause permanent damage to the device. This is a

stress only rating and operation of the device at these or any

other conditions beyond those indicated in the operational

sections of this specification is not implied.

Applications Information

Operation with Supply Voltages Other than ±5V

Using supply voltages less than ±5V reduces the analog signal

range. The PS396/PS397 multiplexers (muxes) operate with ±3V to

±8V bipolar supplies or with a +3V to +15V single supply. Connect

V– to GND when operating with a single supply. Both devices can

also operate with unbalanced supplies, such as +10V and –5V. The

Typical Operating Characteristics graphs show typical on-resis-

tance with ±3V, ±5V, +3V, and +5V supplies. (Switching times

increase by a factor of two or more for operation at 5V or below.)

These muxes operate with a single supply as low as 1V, although on

resistance and switching times become extremely high. Performance

is not guaranteed below 2.7V. This is useful information only

because it assures proper switch state while power supplies ramp up

or down slowly. Overvoltage Protection Proper power-supply se-

quencing is recommended for all CMOS devices. Do not exceed the

absolute maximum ratings, because stresses beyond the listed rat

ings can cause permanent damage to the devices. Always sequence

V+ on first, then V-, followed by the logic inputs, NO, or COM. If

power-supply sequencing is not possible, add two small-signal

diodes (D1, D2) in series with supply pins for overvoltage protection

(Figure 1). Adding diodes reduces the analog-signal range to one

diode drop below V+ and one diode drop above V-, but does not

affect the devices’ low switch resistance and low leakage character-

istics. Device operation is unchanged, and the difference between

V+ and V- should not exceed 17V. These protection diodes are not

recommended when using a single supply.

+5V

D1

V+

COM

*

*

NO

*

*

V–

D1

+5V

*Internal Protection Diodes

Figure 1. Overvoltage Protection using Blocking Diodes

3

PS8443A

06/12/00

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