PS395 Просмотр технического описания (PDF) - Pericom Semiconductor

Номер в каталоге

Компоненты Описание

Список матч

PS395

Precision 8-Ch. 17V, SPST Switch w/8-Bit Serial Decoded Control

Pericom Semiconductor 

PS395

1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122

Precision 8-Ch. 17V, SPST Switch

w/8-Bit Serial Decoded Control

Features

• Low On-Resistance (100Ω typ.)

Minimizes Distortion and Error Voltages

• Single Supply Operation (±2.7V to ±8V)

• Improved Second Source for MAX395

• SPI™/QSI™, Microwire™-Compatible Serial Interface

• Split-Supply Operation (+3V to +8V)

• On-Resistance Flatness: 10Ω Max.

• On-Resistance Matching Between Channels: 5Ω Max.

• TTL/CMOS Logic Compatible (w/+5V or ±5V supplies)

• Fast Switching Speed

• Break-Before-Make action eliminates momentary crosstalk

• Rail-to-Rail Analog Signal Range

• Low Power Consumption

• Narrow SOIC and QSOP Packages Minimize Board Area

• Asynchonous Reset (RS) Input

Applications

• Data Acquisition Systems

• Audio Switching and Routing

• Test Equipment

• PBX, PABX

• Telecommunication Systems

• Battery-Powered Systems

Pin Configurations

CLK 1

V+ 2

DATAIN 3

GND 4

NO0 5

COM0 6

NO1 7

COM1 8

NO2 9

COM2 10

NO3 11

COM3 12

Top View

PS395

24 EN

8-Bit

Decoding

Logic

23 RS

22 DATAOUT

21 V–

DIP/SO

20 NO7

19 COM7

18 NO6

17 COM6

16 NO5

15 COM5

14 NO4

13 COM4

Description

The PS395 eight-channel, serially controlled, single-pole/single-

throw (SPST) analog switch offers eight separately controlled

switches that conduct equally well in either direction. ON-resis-

tance (100Ω max.) is matched between switches to 5Ω max. and is

flat (10Ω max.) over the specified signal range.

These CMOS devices can operate continuously with dual power

supplies ranging from ±2.7V to ±8V or a single supply between

+2.7V and +16V. Each switch can handle rail-to-rail analog signals.

The off leakage current is only 0.1nA at +25°C or 5nA at +85°C.

Upon power-up, all switches are off, and the internal shift registers

are reset to zero. The PS395 is electrically equivalent to two PS391

quad switches controlled by a serial interface, and is pin compat-

ible with the PS335.

The serial interface is compatible with SPI™/QSPI™ and

Microwire™. Functioning as a shift register, it allows data (at DIN)

to be clocked-in synchronously with the rising edge of clock

(SCLK). The shift register’s output (DOUT) enables several PS395s

to be daisy chained.

All digital inputs have 0.8V to 2.4V logic thresholds, ensuring both

TTL- and CMOS-logic compatibility when using ±5V supplies or a

single +5V supply.

Pin Description

Name

Function

CLK

Serial Clock Digital Input

V+

Positive Analog Supply Voltage Input

DATAIN

GND

Serial Data Digital Input

Ground

NO0–NO7

COM0–COM7

V–

Normally Open Analog Switches 0–7

Common Analog Switches 0–7

Negative Analog Supply Voltage Input

DATAOUT

RS

Serial Data Digital Output

Reset Input (RESET)

CS

Chip-Select Digital Input

Note:

NO and COM pins are identical and interchangeble. Either may

be considered as an input or an output; signals pass equally

well in either direction.

SPI & QSPI are trademarks of Motorola, Inc. Microwire is a trademark

of National Semiconductor Corporation

1

PS8462 02/22/00

Share Link: