21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PS394
Precision, Quad, SPDT, 17V Analog Switch
Description
The PS394 is a precision, low-voltage, quad, single-pole/double-
throw (SPDT) analog switch. The four independent switches oper-
ate with bipolar supplies ranging from ±2.7V to ±8V, or with a single
supply of +2.7V to +15V. The PS394 offers low On-resistance (less
than 35 Ohm), guaranteed to match within 2 Ohm between channels
and to remain flat over the analog signal range (4 Ohm Max.). It also
offers break-before-make switching (10ns typical), with turn-off
times less than 75ns and turn-on times less than 130ns. The PS394
is ideal for portable operation since quiescent current runs less than
1µA with all inputs high or low.
This monolithic, quad switch is fabricated using Pericoms 17V
silicon-gate process. Design improvements guarantee extremely low
charge injection (10pC), low power consumption (10µW), and elec-
trostatic discharge (ESD) greater than 2000V.
Logic Inputs are TTL and CMOS compatible and guaranteed over
a +0.8V to +2.4V range. Logic inputs and switched analog signals can
range anywhere between the supply voltages without damage.
Features
Low On-Resistance (17 Ohm typ.) Minimizes Distortion
and Error Voltages
Low Glitching Reduces Step Errors and Improves
Settling Times. Charge Injection: <10pC
Dual-Supply Operation (±2.7V to ±8V)
Single-Supply Operation (+2.7V to +15V)
Improved Second Sources for MAX394
On-Resistance Matching Between Channels: <2 Ohm
On-Resistance Flatness: 4 Ohm (Max.)
Low Off-Channel Leakage, I
NO(OFF)
< 2.5nA @ +85°C
TTL/CMOS Logic Compatible (w/ +5V or ±5V supplies)
Break-Before-Make action eliminates momentary crosstalk
Rail-to-Rail Analog Signal Range
Narrow SOIC and QSOP Packages Minimize Board Area
Applications
Data Acquisition Systems
Audio Switching and Routing
Test Equipment
PBX, PABX
Telecommunication Systems
Battery-Powered Systems
Pin Configuration
IN1
NO1
COM1
NC1
V-
GND
NC2
COM2
NO2
IN2
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Pin Description
Name
IN4
NO4
COM4
NC4
V+
N.C.
NC3
COM3
NO3
IN3
Function
Logic- Levels Inputs
Normally Open Swithces
Common Switch Poles
Normally Closed Switches
Negative Power Supply
Ground
Not Internally Connected
Positive Power Supply
IN1 - IN4
NO1 - NO4
COM1 - COM4
N C1 - N C4
V
GND
N.C.
V+
1
PS8444
01/13/00
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
