PS381/PS383/PS385
Precision, 17V Analog Switches
Description
Features
• Low On-Resistance (16Ω typ) Minimizes Distortion
and Error Voltages
• Low Glitching Reduces Step Errors in Sample-and-Holds.
Charge Injection, 3pC typ
The PS381/PS383/PS385 are improved high precision, medium
voltage analog switches designed to operate with +3V to +8V
power supplies.
The PS381 has two normally open (NO) switches. The PS383 is a
dual, single-pole double-throw (SPDT) switch. The PS385 is a
dual, double-pole single-throw (DPST) function. Each switch
conductscurrentequallywellineitherdirectionwhenon. Intheoff
state each switch blocks voltages up to the power-supply rails.
• Single Supply (+3V to +15V) or Split-Supply
(+3V to +8V) Operation
• Improved Second Sources for MAX381/MAX383/MAX385
• On-Resistance Matching Between Channels, 0.2 Ω typ
• On-Resistance Flatness, 1Ω typ
o
With ±5V power supplies, the PS381/PS383/PS385 guarantee
<30Ω on-resistance. On-resistance matching between channels is
within2Ω. On-resistanceflatnessislessthan4Ωoverthespecified
range. All three devices feature low leakage currents (<2 pA @
• Low Off-Channel Leakage, <2.5nA @ +85 C
• TTL/CMOS Logic Compatible
• Rail-to-Rail Analog Signal Dynamic Range
• Low Power Consumption <1µA
o
o
25 C,<2.5nA@+85 C)andfastswitchingspeeds(t
<130ns).
ON
Break-before-make switching action protects against momentary
crosstalk (PS383).
Applications
• Instrumentation, ATE
• Sample-and-Holds
• Audio Switching and Routing
• Telecommunication Systems
• PBX, PABX
These switches are fully specified for single +5V operation,
with <45Ω R , <2Ω R match, and <4Ω R flatness.
ON
ON
ON
For operationbelow5VthePI5A381A/PI5A383A/PI5A385A
are also recommended.
• Battery-Powered Systems
Functional Diagrams, Pin Configurations, and Truth Tables
COM1
N.C.
N.C.
N.C.
N.C
1
2
3
4
5
6
7
8
16 NO1
15 IN1
14 V-
COM1
N.C.
1
2
3
4
5
6
7
8
16 NO1
15 IN1
14 V-
COM1
N.C.
1
2
3
4
5
6
7
8
16 NO1
15 IN1
14 V-
COM3
NO3
COM3
NC3
13 GND
12 N.C.
11 V+
13
GND
13 GND
12 N.C.
11 V+
PS381
PS385
PS383
NO4
12 N.C.
11 V+
NC4
N.C.
N.C.
COM2
COM4
N.C.
COM4
N.C.
10 IN2
10 IN2
10 IN2
9
NO2
9
NO2
9
NO2
COM2
COM2
Top View
Top View
Top View
N.C = No Connect.
Switches shown for logic “0” input
.
PS381
PS385
PS383
Logic
Switch
Logic
Switch
Logic
SW3, SW4
SW1, SW2
0
1
OFF
ON
0
1
OFF
ON
0
1
ON
OFF
OFF
ON
For free samples and the latest literature: www.pericom.com, or phone 1-800-435-2336
PS8186A
07/15/98
1